There seems to be many different opinions on to what people want. So which would you rather have? A built KA or a built SR? State your reasons for your choice if you want to :)

We quite don't have KAs anyway:p

Originally posted by Bean Bandit
We quite don't have KAs anyway:p

Then you could be different that everybody else by you and swap in the all mighty KA24DE :hehehe: ;)

ehh ...






....NO I'll be different enough driving around with a S15 front in Europe.
Anyway if I go more different I'll forget who I am:eek:

I'll take the SR20DET. 350rwhp and 8k redline doesn't get any sweeter to me.:D Unless you wanna talk about the RBX....:devil:

Need to be more specific I guess...so I say KA24DET...preferably a F-Max stage II that would make me create about 350HP...and I still wont need a bottom end rebuild/strengthening til I hit 450HP+

Talk about power to weight ratio...kill some nasty fast cars w/that!!!

SR's...yeah they are cool but I dont want to have to depend on the guy who did my swap for everything and import everything from Japan...

KA's...now that's where it's at...you got it...you can build it...and you can turbo the hell out of it and run 10's w/it...proven!

i voted for SR. but i pressed KA by accident. from the time extensive time that ive had been messin around with my car. i am not impressed with the KA. i think its a piece of crap motor. which makes me aching for a SR swap. i'm still kind of skeptical of a built KA. but if anyone here like to defend the KA please let me know cuse i want to save some money. and just get a nice a nice 240sx casue mine is just toooooo slow.

Well even though i don't know much about Nissans. Well this is what i know, KA24DE is a bigger motor rite? Bigger meaning more torque cause of the displacement and i think i'd rather turbocharge it then having the SR20DET since its smaller. I mean think about it...2.4 vs 2.0?? Wouldn't u go with the bigger motor? Like for me i would love to have the H22 in my crx but its too heavy and too much work. SO i settled with a b16. The 240sx comes already with KA24DE and why would u swap it out for a smaller motor??:confused:

well thats csaue the KA is a heavy motor, and its stock internals aren't forged like the SR's are. plus i worry about durablity since the KA was never intended to be turbo charged. there fore the cast materials will give in quicker then the SR20DET since that engine was designed to be turboed from the start.

Well i was told that most of the Nissans motor are already turbo prepped?

The KA can be turbocharged on stock internals and can handle up to 400hp.

Either motor is good, with the KA you will get more of a muscle car kinda feel with all of the torque that your going to be getting from it and with the SR it is a more smooth high revving engine. The SR is more of a race inspired engine and it all depends on what your looking for in your car.

Okay, comparison time.

SR20DET - Extremely popular, easy to obtain, capable of tons of power. Even though the block is aluminum, it's still the traditional thick-walled Nissan sand casting, and weighs just as much as the all-iron CA18DET it was designed to replace. This isn't a bad thing, mind you. It means this thing can handle a lot of power (read: boost). Piston oil squirters are definitely a good thing. Pulled from a S15 front clip, it has a beautiful ball-bearing turbo already installed. Earlier engines have the torque-happy heads, so you win either way. Very sturdy. The conversion is cheap. Not too many downsides. Several low-tech trade-offs compared to the CA18DET, but that's not what we're comparing, is it? :D

KA24DE - The truck motor! Old school cast iron, stroked as far as it will go, low-revving, torquey... but if you live in the States, it's already in the car! Although mundane in stock form, it can (like most Nissan engines) go from Jeckel to Hyde with the introduction of a turbocharger. Stock internals will go a long way, but watch out. Where as the SR can be (and has been many times) stroked further, the stock KA is questionably safe running boost in the mischevious side of the tach. Since the rods are so firmly connected to the crank, they'll break in half, leaving two "beauty marks" on your cylinder wall. This is not a racing engine. It has it's limits. But for street use, it's hard to beat. Kept at reasonable boost, a KA24DET could be the best way to shut down import poseurs between stoplights. The main think the KA24 has going for it is cost. To get more parts, you don't have to import them, you just grab some from the junkyard - hardbody pickup, Altima, other 240s, Stanza - it's a common engine. Of course, the SR20 is becoming more common, as are aftermarket parts. There isn't a big aftermarket for the KA, but then if you want aftermarket, get a Honda. ;) For the money you'd have spent on the SR20 conversion you could be getting an F-Max turbo kit or just buy a turbo and have the piping fabricated. Which would you rather have: a stock SR20, or a KA24 running 15 psi?

For the poll, I picked the KA. Why? Well, for one thing, I'm not a hardcore racer, so I like to keep my cars streetable. That extra torque is nice in the city. Also, if I was going for a high-revving strip motor, I wouldn't get the SR20 anyway! Instead, I would build up another CA18DET (after I got a new one for the Pulsar... geez). Yes, I know my front yard is going to be rolled for saying this, but I still think it's a superior motor. The KA and SR are both over square, or have a larger stroke than bore. Sure, the SR has shorter con rods, but it still limits its "revability" (not to mention top end stability). Remember, the SR was designed to be superior to the CA only in terms of price. The SR20DET is not the end-all-be-all motor.

Keep in mind, this is still a subjective thing. It depends on what you like and what is available to you. I don't always have to have high revs (although they are nice). Americans are still going to go for the SR20 swap, just because it brings the car closer to JDM spec. Everybody else either already has it or is going to tear out the CA18DET just for the hell of it. They certainly aren't going to try to import the KA24!

Originally posted by Holyterror

but then if you want aftermarket, get a Honda. ;)


hehehe:D

I voted for the KA because im more budget minded. I dont want an engine that will need a specialist for repairs. And replacement SR20 parts gotta be hard to find. Sure theres a huge aftermarket for the SR20DET, but where is that market? IN JAPAN! Im not gonna pay huge shipping fees for performance parts.

Something else that my friend brought up today while we were talking about either the SR or a turbo KA. If you are looking to go out and buy a 240SX and you plan on keeping the KA and putting on a turbo, it would probably be a good idea to look for one with not very many miles (less than 60k IMO). Because a lot of 240's that I go and look at will have more than 130k. I looked at one for sale about a month ago and it had 210k miles on it! The thing that we were talking about is how good then engine will hold up to a turbo if it has over 100k on it. Because if it had a lot of miles and you had to end up swapping the KA for a KA with less miles and then adding the turbo, then your probably looking at about 1k more than it would cost to swap in an SR. But still this is all opinion based.

I'm surprised to see that there are 6 votes for the KA and 4 for the SR. I thought it would be the other way around, but you never know.

I have a G. And it already has an SR20. Now all I gotta do is turbocharge it. (I know wrong car, but that is besides the point). The KA is very picky with the amount of boost it can take. I belive Sport Compact Car did an article on a Guy that turbocharged his KA and went through three motors doing it.

yup and that was to get to 400hp...

Originally posted by lloyd_nickens
I have a G. And it already has an SR20. Now all I gotta do is turbocharge it. (I know wrong car, but that is besides the point). The KA is very picky with the amount of boost it can take. I belive Sport Compact Car did an article on a Guy that turbocharged his KA and went through three motors doing it.

I read that article... didn't he blow his motors because of a fuel problem or something? I dont really remember *shrugs*

-Grendel

I Tried looking for the mag last night but can't seem to find it. I'll look again when I go to lunch.

That article is in the May 2002 issue of SCC

Yup sure was (I found it). He had 438whp. That my friend is a lot of power!!

KAs are very sturdy, durable engines. After reading the SCC turbo 240sx article, I learned that the first two engines blew because of a faulty wastegate hose and bad fuel management respectively. The KA24 engines (which had 110+ mileage) themselves didnt fail.

You shouldnt worry about turboing a KA with less than 130k on it.

I'd still go sr20det, if I can get 350 at the wheels I'd be happy enough, I like the revability hence my name, but who needs torque when you've got a superior hp/wt ratio, 350rwhp and 2800lbs that'll beat a Z06 fellas. And the aftermarket isn't that bad it's coming around nicely since this us spec silvia craze hit. most parts for the sr20de found in our g20's/se-r's will swap right over. mmmmm....... high compression+turbocharger= instant boost the KA just doesn't fit my personality.

SR20s dont get anywhere near 350 hp out of the box. And KAs have higher potential - 400hp.

Originally posted by Fliquer
SR20s dont get anywhere near 350 hp out of the box.

Neither do KA's. the KA only has 135/155 hp and the SR has 204/220/247 hp. So the SR is already closer to that 350 hp mark. With a bigger turbo, downpipe, exhaust, injectors, and properly tuned ecu, then you could have close to if not 400 hp with the SR. But at those hp levels you better have already or are planning to do it, upgrade your bottem end so you don't have a blown motor.

Originally posted by Fliquer
SR20s dont get anywhere near 350 hp out of the box.

Who said anything about stock 350hp?

You were quoting 350hp as an advantage the sr20 has over the KA....or have I misunderstood?

Is the KA24de an easily obtainable engine w/o car?

like in a junk yard??

Most 240's i see have a lot of miles on it.

I think it's safe to say that the SR20 will produce more power with less work.

I know for a fact that JUN has a yellow S15 Silvia that puts 485 hp to the ground. Technically, the engine is an SR22, thanks to an increasingly popular stroker kit. Which is fine, unless you have a phobia of under-square engines (if I can get over it, so can you).

There aren't many high-power examples of the KA24 around. Even in the U.S., the hyped-up SR20DETs greatly outnumber them.

Keep in mind that anything JUN puts on display is bulletproof; you could achieve these numbers with less work, sacrificing stability (not to mention engine life). You can get a KA24 crank into the SR20 with less work than you might think, and turn it into an SR24. You get the best of both worlds, I guess.

In a block-to-block comparison, it's still hard to say which is better. The KA24 is iron, which is inherently stronger. However, the SR20's block is so thick that the materials don't make much of a difference. The SR20 wins with oil squirters, the KA24 possibly has better coolant passages, and so on...

But the SR20 will rev higher, and inevitably, produce more power with that wicked racing cam you've undoubtedly put on it already. Case closed.

Originally posted by Holyterror
I think it's safe to say that the SR20 will produce more power with less work.

I know for a fact that JUN has a yellow S15 Silvia that puts 485 hp to the ground. Technically, the engine is an SR22, thanks to an increasingly popular stroker kit. Which is fine, unless you have a phobia of under-square engines (if I can get over it, so can you).

There aren't many high-power examples of the KA24 around. Even in the U.S., the hyped-up SR20DETs greatly outnumber them.

Keep in mind that anything JUN puts on display is bulletproof; you could achieve these numbers with less work, sacrificing stability (not to mention engine life). You can get a KA24 crank into the SR20 with less work than you might think, and turn it into an SR24. You get the best of both worlds, I guess.

In a block-to-block comparison, it's still hard to say which is better. The KA24 is iron, which is inherently stronger. However, the SR20's block is so thick that the materials don't make much of a difference. The SR20 wins with oil squirters, the KA24 possibly has better coolant passages, and so on...

But the SR20 will rev higher, and inevitably, produce more power with that wicked racing cam you've undoubtedly put on it already. Case closed.

Well said :cool: :D

Originally posted by Fliquer
You were quoting 350hp as an advantage the sr20 has over the KA....or have I misunderstood?

I think you misunderstood me I was just saying that I'd be happy with 350rwhp if I could mod it to that level not that it was an advantage b/c the KA can do the same thing. :D

I owne a Ka and i dont think that you should get one. Shure a ka has torque and thats nice, but its a bunch of crap what these guys say about building one up, ya, go on the internet and try to find a turbo for the Hardbody, non-existant, sure you can find em for the 240, but you get to pay twice as much as you would with the SR. There isnt that many upgrades to bring the Ka up to 450 hp, as one guy said here, trust me on it, it just dosent happen. Its a nice engine, but the SR has many more options and stuff, so go with the SR, not the Ka, unless you believe all these guys ;)

Originally posted by HoboBob
I owne a Ka and i dont think that you should get one. Shure a ka has torque and thats nice, but its a bunch of crap what these guys say about building one up, ya, go on the internet and try to find a turbo for the Hardbody, non-existant, sure you can find em for the 240, but you get to pay twice as much as you would with the SR. There isnt that many upgrades to bring the Ka up to 450 hp, as one guy said here, trust me on it, it just dosent happen. Its a nice engine, but the SR has many more options and stuff, so go with the SR, not the Ka, unless you believe all these guys ;)

I take it you have never heard of chris may (http://www.executivecleancar.com/240/presentmods.htm) or Duy? Both are pushing 450 hp with turbo KA's. Who turbocharges the hardbody anyways? SR can be just as expensive as turbocharging the KA. The KA is a very strong engine anyways and can handle about 350 on the stock internals. You can customize your own turbo kit for the KA and put down a lot of HP, just like both of those guys did. What's so hard about building up a KA? There are head gaskets out there. Along with forged pistons and rods. You can have everything done at a shop that you can't do yourself like balancing the crank or p&p. The KA can be built up just as easily as the SR can. I know this was an opinion based question and your just stating your opinion, but I'm just pointing out the facts

Originally posted by J SPEC SilEighty


I take it you have never heard of chris may (http://www.executivecleancar.com/240/presentmods.htm) or Duy? Both are pushing 450 hp with turbo KA's. Who turbocharges the hardbody anyways? SR can be just as expensive as turbocharging the KA. The KA is a very strong engine anyways and can handle about 350 on the stock internals. You can customize your own turbo kit for the KA and put down a lot of HP, just like both of those guys did. What's so hard about building up a KA? There are head gaskets out there. Along with forged pistons and rods. You can have everything done at a shop that you can't do yourself like balancing the crank or p&p. The KA can be built up just as easily as the SR can. I know this was an opinion based question and your just stating your opinion, but I'm just pointing out the facts

YES i agree man!!:D

J Spec...PSI240SX put down about 2-3 wks ago 409RWHP on his KA24DET...nice stuff...makes his Viper kill when he only had 336RWHP seem like...OMG what can he kill now!

KA-T ownz...

Btw...Duy no longer has that car; this guy name Bill (aka Dr. Evil on FA) has it and runs pretty hard...he's in Tampa...

Yeah I remembered that guy as well but didn't know his name. I still have those video's of him running a 12 something on street tires. Impressive. I thought I had heard somewhere that duy sold his car, but I wasn't sure. Oh well, it still exists and is still a VERY fast car.

Do you know if he ever got the video up of him beating the viper? I thought he said he was going to get one up soon.

That happened over summer so if he doesnt have a video of that up I dont think he will...

:mad:

hey i was just tryin to let you guys know, us over at the 4X4parts.com, which is a nissan site, dont talk about building up a ka if we want power, we talk about getting a sr20-det, now if the guys that owne the ka's are talking about getting sr's, well you know, just put it together. Ohh and yes you can find turbo's for the ka, not the truck, but yes fabricate one, and possibaly find one for the 240sx, but you got to be rich to get one, lol they cost bout twice as much as the sr turbo's. Ohh plus the sr comes with a freakin turbo, soo you know, i was just lettin you guys know, checkout the nissan site above, trust me, go with the ka if you want, but I believe the sr would give you more power for your money, and the parts are far more available than for the ka

Originally posted by HoboBob
I believe the sr would give you more power for your money, and the parts are far more available than for the ka

More power for the money? Ok lets say you have S13...you buy a blacktop which would cost you around 2k; 1k for install and tuning...that's 3k spent. Now you could spend 3.3k to get a KA turbo kit which would make you put down 240RWHP at 7 psi...the blacktop puts down around 160-165RWHP at stock boost level. Hmm...I think ppl here can do math pretty well and see where the bang for the buck is..plus as you said...all the parts for the KA are here and you dont have to pay lots of money to get them from Japan...plus...more mechanics here know how to work on KA's than SR..bar none!

:devil:

jebus, im just tryin to let ya know, man, people who owne the ka arent staying with the ka, and pluss the s13 puts out 205hp and 203 torque stock, the ka has aroun 130 hp stock , and not sure on torque, now if you cant put in a motor yourself that sucks, or if you dont have someone to help you that knows what there doing that sucks. ka's are available to get in the US easy, yes, but I believe the sr would be a better choice, you can probably get a ka in a junk yard for around 500, and put some money into it to make it kind of fast. The thing is that the ka will produce more torque than the sr, but the sr will get you more hp for the money, and if you pick up a s13 with 205 hp, you get a trany, ecu and wiring harness, all for around 1.5-2k dollars, MY personal opinion is the SR, go with the ka if you want, its not up to me, but maybe you had better check out the 4x4parts.com site and see what the guys with the ka's are saying, it may change your mind

:flipa:

Remember, the SR20DET is already turbocharged, the KA24DE is not. When equipped with similar-sized turbos, the KA24 comes out on top, due in no small part to the larger displacement of the "truck motor." They're both good motors, so why mess with swapping? There was a 240SX in Sport Compact Car running 438 hp at around 20 psi. That's plenty for me on the street. Actually, 300 is enough for me, and the KA24 is definitely capable of that.

The sr is stable up to 16psi on stock internals
While the ka is only stable up to 10ps maybe 11
plus the sr would have less miles when you buy it
and the ka would have more miles if you kept it
new trany you would get with the sr
and new ecu
no new tranny with the ka, and no new ecu, dont get
me wrong i like the ka, but when the guys who OWN the
ka's talk about getting power, none talk about building up
the ka to extremes, we just say "drop in a sr". i give up
it really is up to you what to get, personally get the sr
if you want to stick with the ka, youll spend alot of money
on the turbo, unless you fab it yourself, cya all later, and come
visit me in the 4x4parts.com forums some time ;) where the
trucks hang out, hehe :silly2:
Guess thats all i got to say

Originally posted by HoboBob
jebus, im just tryin to let ya know, man, people who owne the ka arent staying with the ka, and pluss the s13 puts out 205hp and 203 torque stock, the ka has aroun 130 hp stock , and not sure on torque, now if you cant put in a motor yourself that sucks, or if you dont have someone to help you that knows what there doing that sucks. ka's are available to get in the US easy, yes, but I believe the sr would be a better choice, you can probably get a ka in a junk yard for around 500, and put some money into it to make it kind of fast. The thing is that the ka will produce more torque than the sr, but the sr will get you more hp for the money, and if you pick up a s13 with 205 hp, you get a trany, ecu and wiring harness, all for around 1.5-2k dollars, MY personal opinion is the SR, go with the ka if you want, its not up to me, but maybe you had better check out the 4x4parts.com site and see what the guys with the ka's are saying, it may change your mind

:flipa:

205HP at the crank...at the wheels it's like 165RWHP...the KA has 155HP stock which is around 129RWHP...now that's not a bad start but like I said w/the Stage I turbo kit...you can make 240RWHP...that's about 80RWHP more than your SR which translates into about 100HP at the crank more. Why should I check out a 4x4 site anyways? I've owned a 240SX for 6 years and I know my stuff...4x4's arent going to change my mind about something that I know...

:flipa: :flipa: :flipa: :flipa: :flipa:

actually more like 130-140hp for the ka ;)

lol, you might find something for your our crap ka engines if you look hard enough ;) you know trucks are better anyway, hehe

:bloated:

ohh wait, i think your right on the whp on the ka

Yes I am...from 91 til 98 the KA24DE (DOHC) has 155HP...the only years for the 130HP was 88-89 when it was SOHC

Just a tid bit, I think it comes down to preference. However, its very important to know that its MUCH easier to get power from a motor thats ALREADY turbo than to take an NA motor and turbo it. When you take an NA motor and force feed it, you'de better know a thing or two about motors and forced induction. And this of course, is the REASON KA's are not as popular.. because it does take some education to actually be able to achieve useful performance from a motor that has been converted to forced induction.

There are PLENTY of high-rolling KA motors in the US. The Nasport 240's use KA24E's which have been carbed with high-compression and tons and tons of various other race components, usually producing about 300HP -- but this is strictly race so I hear. There are plenty of DOHC KA's putting over 300.. some putting 450. I've heard of several KA24ET (SOHC) motors putting out very respectable figures as well. And of course, there's a very large amount of SR owners in Japan (and of course out here in the US) that are putting out great amounts of power.

So really, it does come down to preference.

well i'd rather have an sr cuz of 2 reasons. its jdm and it has more potential. you dont see the ka's used in the jgtc do you? no cuz the sr has a better ...foundation to add hp to. the ka will break down once the hp goes high....well i dont really care much bout the torque cuz the 240 in my opinion is more of a drifter than a dragger...obviously.

yeah thats true if all you wanted was torque shoulda got a corvette =0

That's really not a logical response IMO. If that is the case the and all u car about is hp then u should have turbo honda. I think for a street car a turbo ka would be a monster. Hp is important but correct me if I am wrong is not torque what makes your car faster. I think the only way to compare these engines is in turbo trim. Otherwise compare the sr20et non turbo vs the ka, Going by memory the sr20de makes 140?hp, Factory turbocharged with a lower compression 247 in the latest trim, 205-217 in the earlier trims that most people buy (mainly because of they have more potental than the newer ones). A turbo ka with stock compression goes from 140-155 to 225-240 at the wheels on very low boost . Going past to 300 will call for a rebuild on a ka. This is where the srt has a slight advantage because it can take more abuse before a rebulid. Imo if you plan on going for about 400 hp and plan on rebuilding, both engines can do it but the ka will have a torque advantage.

Also as far a being cost effective it depends on the senerio. Say your ka is in bad shape and u are looking for a say 300 hp car the the sr is for u. Say u plan on doing a full rebuild and want to go for 400plus. Consider the cost of the ka; engine build up and turbo kit, engine managment, fuel stuff . You would have to do all this for a sr (stock turbo is too small as is the piping) and another 2000-3000 for the motor. And if anything happends and u blow your motor that is another 2000 vs 200-300 for a new motor. There is no denying the sr20 is a awesome motor but its not so awesome in NA trim. Same thing with the ka not so fabulous in na trim but turbocharged it can be awesome too. Everyone has a preference, I just dont discount the ka because it can and has made hp.

As far as the aftermarket goes the sr has more companies making the same products for it (hks cams or toda etc) but just about anything you need to build up the ka is available off the shelf. Email me if any one is looking for something and can probably provide you with a site or phone number.

I voted for the KA because it is what the car now has in it.
Before going to an SR or RB I would want to see what a turbo will do for my 90k Ka24de engine.
If I need more power and can no longer deal with a boost of under 7,
I will then have to rebuild my KA. I can get parts from my local Auto Parts Store and not have to mail away for them.
If that motor blows or I grow tired of it, I would probably skip the sr and go with the RB25det.
An Inline Six is a perfectly balanced Motor!
No need for internal balancing like the 4 banging sr20 or the
non-internally balanced heavy vibrating KA24.
Just my opinion and nothing more.
I am just a newbie with imports.:confused:

Hello, like to say I'm new to posting at this forum, but have been reading for a while. This is the most controversial subject for 240's out there. Both engines have their ups and downs. SR rev's higher and smoother, yet the KA has so much more torque. There is also the saying of, "There's no replacement for displacement", which is also true. There was the same argument at the forum from 240sx.org, I'd put the link here, but the sites down for a little bit. It's all comes down to to preference and budget. Do you prefer the smooth high revving, or the nice jerk of high torque. With a high enough budget, both cars can be 10 or less second cars. Just comes down to what you can afford and what you prefer. Also, the comment about why you don't see KA's in jspec races, why would you swap out a perfectly good motor for another good motor? Hope this helps and when the 240sx.org forum comes back up, I'll post a link there, because they state some pretty good things on both KA and SR.

Originally posted by Holyterror
I think it's safe to say that the SR20 will produce more power with less work.

I think its safe to say both motors are capable of producing excellent power and that both will require a lot of work.


There aren't many high-power examples of the KA24 around. Even in the U.S., the hyped-up SR20DETs greatly outnumber them.

The SR is an old motor that has been used in Japan for quite a long time now -- its NO WONDER there are so many aftermarket products for it. For Japan, the SR is just ANOTHER junky domestic motor that comes a dime a dozen. Look at our domestic motors? You can get parts SO cheap, let alone built crate motors for some of our domestic V6's and V8's. You are right about one thing, SR is sure "hyped-up" bro. Engine importers are making a killing off of idiots who dont know better out here in the US.

Powerful KA's are more rare, thats mostly because most KA owners arent interesting in bragging rights unlike the majority of trendy bandwagon bastards who get their kicks off of saying the two letters "S" "R."


Keep in mind that anything JUN puts on display is bulletproof; you could achieve these numbers with less work, sacrificing stability (not to mention engine life).

I am not gonna knock JUN, they are a high-end tuning company. However, its silly to say anything high-performance is bullet-proof. There is a reason race wheels, race motors, and race suspension dont come factory on street vehicles. Most extreme race motors need more maintanance and have a more expensive upkeep. The more you push the envelop towards owning a race car, the less streetable it becomes. It may be able to take a flogging at the track, but it sure will require a lot of upkeep.


You can get a KA24 crank into the SR20 with less work than you might think, and turn it into an SR24.

Who told you the KA crank can be modified to fit an SR?


In a block-to-block comparison, it's still hard to say which is better. The KA24 is iron, which is inherently stronger. However, the SR20's block is so thick that the materials don't make much of a difference. The SR20 wins with oil squirters, the KA24 possibly has better coolant passages, and so on...

Incorrect. The KA24DE has oil squirters.


But the SR20 will rev higher, and inevitably, produce more power with that wicked racing cam you've undoubtedly put on it already. Case closed.

RPMs are not as important as powerband. The most important thing about a motor is being able to create good power in a useable powerband. Depending on the type of racing you do, SR and KA can both have potential.

- Mike

old_s13 - good shit!
:)


OK i know sr20s are "hyped" but what about peeps with them nissan sentras/200sx? My friend has a ga motor in it and its pretty damn weak. I know hotshot makes turbo kits for it but is it worth it?? So we all ended up tellin him to get a sr20de and turbo that or sr20det. As for the 240sx...i dont really think its necessary to swap in an sr20det motor.

Originally posted by old_s13

I think it's safe to say that the SR20 will produce more power with less work.

I think its safe to say both motors are capable of producing excellent power and that both will require a lot of work.


There aren't many high-power examples of the KA24 around. Even in the U.S., the hyped-up SR20DETs greatly outnumber them.

The SR is an old motor that has been used in Japan for quite a long time now -- its NO WONDER there are so many aftermarket products for it. For Japan, the SR is just ANOTHER junky domestic motor that comes a dime a dozen. Look at our domestic motors? You can get parts SO cheap, let alone built crate motors for some of our domestic V6's and V8's. You are right about one thing, SR is sure "hyped-up" bro. Engine importers are making a killing off of idiots who dont know better out here in the US.

Powerful KA's are more rare, thats mostly because most KA owners arent interesting in bragging rights unlike the majority of trendy bandwagon bastards who get their kicks off of saying the two letters "S" "R."


Keep in mind that anything JUN puts on display is bulletproof; you could achieve these numbers with less work, sacrificing stability (not to mention engine life).

I am not gonna knock JUN, they are a high-end tuning company. However, its silly to say anything high-performance is bullet-proof. There is a reason race wheels, race motors, and race suspension dont come factory on street vehicles. Most extreme race motors need more maintanance and have a more expensive upkeep. The more you push the envelop towards owning a race car, the less streetable it becomes. It may be able to take a flogging at the track, but it sure will require a lot of upkeep.


You can get a KA24 crank into the SR20 with less work than you might think, and turn it into an SR24.

Who told you the KA crank can be modified to fit an SR?


In a block-to-block comparison, it's still hard to say which is better. The KA24 is iron, which is inherently stronger. However, the SR20's block is so thick that the materials don't make much of a difference. The SR20 wins with oil squirters, the KA24 possibly has better coolant passages, and so on...

Incorrect. The KA24DE has oil squirters.


But the SR20 will rev higher, and inevitably, produce more power with that wicked racing cam you've undoubtedly put on it already. Case closed.

RPMs are not as important as powerband. The most important thing about a motor is being able to create good power in a useable powerband. Depending on the type of racing you do, SR and KA can both have potential.

- Mike

Word, look at the Honda S2000...it revs to 9000 rpm and its F20C engine is a torqueless dick. Still a fun car :D

So the moral of the story is... I'm not allowed to exaggerate or make generalizations, and if I do, I'll never hear the end of it. :rolleyes:

One of the major things that I didn't mention before was the fact that the SR20 is a square design. Bore and stroke are both 86mm, as opposed to the significantly under-square KA24's 89mm bore and 96mm stroke. The tenedency of turbo KA24s to break con rods needs no further explanation. Nor does the substantially lower redline (although it is also a function of displacement/no. of cylinders).

I don't care what anybody says, I think that the SR20 is more popular because of the vast amount of literature and aftermarket parts already out there. Sure, stock KA24 parts are all over the place, but performance parts are a different story. Thanks to companies like Stillen (http://www.stillen.com) and Jim Wolf Tech (http://www.jimwolftechnology.com), there are some good parts out there, but internals are still limited to top end. Face it; not everyone who bought the SR20DET is a poseur. There are compelling reasons for it.

All in all, I'd probably stick with the KA24 for my needs. If I was going to swap, it'd be for another CA18DET.

And to answer mellowboy's questions about the GA16DE... it's a decent motor, and remember that it's always cheaper to turbocharge the engine you have rather than buying a new one. Hotshot makes a turbo kit designed for the 200SX, but it's supposed to fit the Sentra as well. I'd give it a look. It is very complete - includes manifold, injectors, intercooler, ECU, and even boost and oil pressure gauges! Of course, it also costs ~$3700, so you pretty much do the SR20 swap...

From what I hear, the FWD NA SR20DE is *not* the same as the SR20DET. Besides the turbo, I've read that the SR20DE does not have oil squirters. I am sure there are plenty of other things it may not have which would make it a weaker candidate. Its very similar to the comparison between the Mexican KA24E (made for the NISSAN truck) and the Japanese KA24E made for the S13 -- they are quite different internally.

If you're going to build your motor, talk to a shop that builds engines.


Originally posted by mellowboy
old_s13 - good shit!
:)


OK i know sr20s are "hyped" but what about peeps with them nissan sentras/200sx? My friend has a ga motor in it and its pretty damn weak. I know hotshot makes turbo kits for it but is it worth it?? So we all ended up tellin him to get a sr20de and turbo that or sr20det. As for the 240sx...i dont really think its necessary to swap in an sr20det motor.

Originally posted by old_s13
..... and the Japanese KA24E made for the S13 -- they are quite different internally.





just to let you know, japanese silvia s13's come with ca18de, or ca18det engines, i dont know where your getting the ka24e.. maybe you could explain that or maybe you just referr it as that.

So the moral of the story is... I'm not allowed to exaggerate or make generalizations, and if I do, I'll never hear the end of it. :rolleyes:

No, the moral of the story is that if you make statements and share information on a public forum, there ARE people here who read what you write and may occasionally contradict, agree, or correct you. I know everything I say is not always right, I am no one special.


One of the major things that I didn't mention before was the fact that the SR20 is a square design. Bore and stroke are both 86mm, as opposed to the significantly under-square KA24's 89mm bore and 96mm stroke. The tenedency of turbo KA24s to break con rods needs no further explanation. Nor does the substantially lower redline (although it is also a function of displacement/no. of cylinders).

I am not an engine builder, I am not going to argue about the differences between the internals of the two engines. But, there are reputable companies like Rebello who've been working on Datsun/NISSAN motors for ages and their motors are proven at races. I dont know why you say KA24's easily break connecting rods, I know several turbo KA owners who havent broken any yet. Two of them drove CROSS COUNTRY three years ago to the national 240SX convention in Kansas City! Many of them flog their cars at the track and their cars are still reliable.

Have you ever stopped to consider that maybe people are not turboing, installing, OR tuning their cars right? An engine is quite complex, the last thing I would do is buy parts and just "install" them. People need to learn and research more before they just do things like install mods or crank up boost.


I don't care what anybody says, I think that the SR20 is more popular because of the vast amount of literature and aftermarket parts already out there. Sure, stock KA24 parts are all over the place, but performance parts are a different story.

If the SR is common in Japan, its no wonder that there is support to back it up -- I already said this. In due time, I am sure the KA will gain more support in the US. Besides, just incase you didnt know the 240SX *just* got popular. Where were you 14 years ago? Did you have love for this car then, or did you recently read about them and get a hard on like most newschoolers? Hopefully you didnt hop on the bandwagon.


there are some good parts out there, but internals are still limited to top end. Face it; not everyone who bought the SR20DET is a poseur. There are compelling reasons for it.

There is NO DOUBT that the SR20DET is a good motor, no doubt at all. You wont hear me talking bad about it. Just remember, its always easier to upgrade a turbo motor than it is to take an NA motor, turbo it, and also upgrade it. You have to make sure you've done the necessary work for that motor to be able to handle that type of power. Whether its internal upgrades, balancing, strengthening, whatever you have to do -- it HAS to be done. Otherwise, kabooom.

I dont understand what you mean by "internals are limited to top end" though.


All in all, I'd probably stick with the KA24 for my needs. If I was going to swap, it'd be for another CA18DET.

I like how people always bring up OLD motors, like the CA or the RB20, as if they are mysterious legends. These motors were designed in the `80s. Anyone who buys one of these motors will need to do some serious cleanup.. atleast I would.

If people are so crazed about doing "swaps" -- why not throw in a 3-rotor motor.. show people you're fucking INSANE. Besides, those are some of the best motors ever made.

hey old_s13, are you refering to me with your reply? just wondering

No, I wasnt referring to you. And about the KA24E, I was saying that the one found in the 89-90 is MADE IN JAPAN.. the one found on the truck is MADE IN MEJICO.

- Mike

Originally posted by old_s13
No, I wasnt referring to you. And about the KA24E, I was saying that the one found in the 89-90 is MADE IN JAPAN.. the one found on the truck is MADE IN MEJICO.

- Mike

thats cool though Mike, so it was just made in japan but its not the sr20de found in the japanese s14's. thats coo, thanks yo.

anyone looking for turbo power for their KA, look no further.
I have a ka24e with my turbo on the waythe engine now rests at a comfortable 300 hp, with my turbo I should push 400+. I have a 240 FI, but they make similar kits for the hardbody KA24C. the best most realiable site is realnissan.com they will handle all the ka motors.

Originally posted by musicsurfman
anyone looking for turbo power for their KA, look no further.
I have a ka24e with my turbo on the waythe engine now rests at a comfortable 300 hp, with my turbo I should push 400+. I have a 240 FI, but they make similar kits for the hardbody KA24C. the best most realiable site is realnissan.com they will handle all the ka motors.

Wow! What a great opportunity to turn this thread into an advertisement..

<sigh>

ps: What's a KA24C?

Originally posted by old_s13
So the moral of the story is... I'm not allowed to exaggerate or make generalizations, and if I do, I'll never hear the end of it. :rolleyes:


If people are so crazed about doing "swaps" -- why not throw in a 3-rotor motor.. show people you're fucking INSANE. Besides, those are some of the best motors ever made.


Word!

Ever seen the 3 rotor AE86(I REFUSE to call it a Hachi or Hachi-Roku)

Originally posted by 180driftking


just to let you know, japanese silvia s13's come with ca18de, or ca18det engines, i dont know where your getting the ka24e.. maybe you could explain that or maybe you just referr it as that.

so S13's didn't come with SR's now?? news to me...:rolleyes:

id say screw both of them, and go get a rb25det and pop it in your 240.

$8,000/installed, and you prolly won't need to add another penny to it. they run 12's stock. 250hp. and upgradeable :cool:

read about it more peeps
http://240skyline.nissanpower.com/catalog.html

this is way too cool looking
http://files.automotiveforums.com/uploads/808159hin3.jpg

if i can't buy one off of someone by next year im doing this to my car next spring.

Originally posted by mynismo
id say screw both of them, and go get a rb25det and pop it in your 240.

$8,000/installed, and you prolly won't need to add another penny to it. they run 12's stock. 250hp. and upgradeable :cool:

read about it more peeps
http://240skyline.nissanpower.com/catalog.html

this is way too cool looking
http://files.automotiveforums.com/uploads/808159hin3.jpg

if i can't buy one off of someone by next year im doing this to my car next spring.

engine = nice

that body kit and wing = :apuke:

i'm also debating going the way of the RB25 if i have enough cash to finance it.

MeNismo> Yes, we can always rely on you to post over-generalized information about how much things cost and how much performance will be gained with them. I dont know where you get all this informatation.. do you do ANY work on your own car? OR, do you just pay to have things installed?

Anyone with common sense about fabricating KNOWS that things dont *just* cost a certain price. You simply cannot say "throw down 8k and run 12's" thats the stupidest shit I've ever heard. Havent you ever heard of problems? Things dont always work out as planned.. you always have to take into account problems that may popup: defective or neglected motor, defective parts, and fabrication/customizing.

You shouldnt generalize so much..

ps: That car makes we want to barf. When I see stuff like that, chances are the car performs as good as it looks. AHEM.


Originally posted by mynismo
id say screw both of them, and go get a rb25det and pop it in your 240.

$8,000/installed, and you prolly won't need to add another penny to it. they run 12's stock. 250hp. and upgradeable :cool:

read about it more peeps
http://240skyline.nissanpower.com/catalog.html

this is way too cool looking

if i can't buy one off of someone by next year im doing this to my car next spring.

yea i was talking about the engine iketani... im not to fond of that s13's body.

there's a place around us that does installs... you get a quote and they do it. 8,000 is a ballpark, give or take. chances are if you're gonna pop that much money into your car you won't worry about a couple hundred here and there.

yes i do work on my car... only thing i had installed is the header because its the old style and had to be reshaped to my car. there's no way i would try messing around with the whole engine... that's just way too much time and i def lack the mech experience.

why are you downing rbs? those things are complete beasts.

Originally posted by mynismo



why are you downing rbs? those things are complete beasts.

Hes not. Hes just sayin its stupid to dump 8g's that makes a car run "12s". You can use that money to build ur ka or sr motor for half or lil more for that price and be in the 12s. I wouldn't spend 8 grand on a swap. Thats stupid.

either way you go it will cost about 8 g's to get it into the 12's. i'd rather have one with a base 12.

anyways i would prolly just get one already installed, dont have to wait at all and a hell of a lot better economically.

and no it's not stupid... it's a 12 sec car man!!! that completely rocks.

Old_s13 actually isn't saying that it's stupid to drop 8g's in a car to make it run twelves. He's saying don't generalize that you can just spend 8g's and magically you car will make that nice little board say 12... There are other factors, such as defective parts, wear on the engine, incorrect installation which will cause more of a cost... Also, you can't just "run" 12's, there's a lot more to it than engine, such as launch, shifting, and other things. That's basically it, right Old_s13?

Originally posted by uneek_s15
Old_s13 actually isn't saying that it's stupid to drop 8g's in a car to make it run twelves. He's saying don't generalize that you can just spend 8g's and magically you car will make that nice little board say 12... There are other factors, such as defective parts, wear on the engine, incorrect installation which will cause more of a cost... Also, you can't just "run" 12's, there's a lot more to it than engine, such as launch, shifting, and other things. That's basically it, right Old_s13?


Basically u have to be a good driver is what ur sayin!:) I think i'd rather use that 8 grand on something else rather then dumping all of it on a swap. Thats just me though...

i wasn't adding in bad figures.. like a bad engine, bad parts, bad driver, etc. it's all expected that you have a fab engine wtih 20000 mi and andretti in the car.

you don't add that in when estimating times peeps.... if it was for that you guys can easily say the same thing for corvettes, porshces, etc. i think that goes without saying

more and more Im believing engine swaps into a 240 is a waiste of time.

The more I read about the KA24 the more I like it.

People don't like it cause when new they assume KA24 powered 240sx like what they have=slow a Sr20det 240sx=cool. This engine is not a truck motor despite popular belief. Hell they used it in older cars and racing events before it was used in a Nissan hardbody....

Also people say the engine doesn't like to rev or such BS...

ANY engine can be made to do what you want it to. You look at your problem area.... heads on a DE, and valvetrain. There is quite a few parts you can buy that are made for KA's to improve all the pieces of your valvetrain. With good tuning and proper pieces I bet the KA could rev a heck of a lot better..... and still have better torque then a SR20 or a SR22 stroker.

The motor in your 240sx has plenty of potential..... instead of waisting thousands just to put a stock motor in..... put that money on your current engine and make it badass.... no doubt in my mind a KA24DE with 8k spent on parts for it would stomp the living shit outta that 8k swap for a stock Rb25...... no doubt at all.

Originally posted by SR20DETpower

no doubt in my mind a KA24DE with 8k spent on parts for it would stomp the living shit outta that 8k swap for a stock Rb25...... no doubt at all.



Thank you!

Originally posted by uneek_s15
Old_s13 actually isn't saying that it's stupid to drop 8g's in a car to make it run twelves. He's saying don't generalize that you can just spend 8g's and magically you car will make that nice little board say 12... There are other factors, such as defective parts, wear on the engine, incorrect installation which will cause more of a cost... Also, you can't just "run" 12's, there's a lot more to it than engine, such as launch, shifting, and other things. That's basically it, right Old_s13?

You couldnt have said it better.. finally, someone who gets it!

- mike

Originally posted by SR20DETpower
ANY engine can be made to do what you want it to. You look at your problem area.... heads on a DE, and valvetrain. There is quite a few parts you can buy that are made for KA's to improve all the pieces of your valvetrain. With good tuning and proper pieces I bet the KA could rev a heck of a lot better..... and still have better torque then a SR20 or a SR22 stroker.

The motor in your 240sx has plenty of potential..... instead of waisting thousands just to put a stock motor in..... put that money on your current engine and make it badass.... no doubt in my mind a KA24DE with 8k spent on parts for it would stomp the living shit outta that 8k swap for a stock Rb25...... no doubt at all.


Yes, but at what sacrifice? Anytime you squeeze the living shit out of a motor to get power, you sacrifice driveability and reliability. SO, there is a reason why V12's exist.. and its very much true, displacement DOES matter.

Compare a KA 2.4L vs a RB 2.5L, of course one is better designed from the factory -- so that DOES make a big difference. But, it really depends as to who builds up what motor. Its just too damn hard to generalize certain things without the hard evidence to back it up. Only reputable motor shops will be able to tell you the pro's and con's.. or very knowledgeable 240 guys.

The main point is, 8k is a joke.. because there are plenty of places that will gladly take that money and do some shady engine swap. The important thing is doing business with a reputable shop OR do the research and learn everything you need to know, from motor to fabricating.. and just get the job done.

12's dont fall out of the sky.. things break, and nothing is perfect.. we need to learn how to research before we blurt out things like "8k = 12's"

- mike

I'm keepin my KA...

All this talk about the KA24DE,

what about the SOHC version?

just as good if not a lil better in the long run...

I hear the heads flow more stock and the Single Cam has been used quite a bit for racing purposes.

I also believe the pistons are the next level up in compression. With tuning this could be of benefit and make more HP then the DE with less boost, with tuning if I might add again. Now if you wanted to make substantial numbers lets say over 350hp(Read below as well about this) you would need to start rebuilding the engine..... and it might have some miles on it so this would help out as well with some more power anyways just from a maintenace stand point on the engine. only thing I really don't like as compared to the DE is that the sparkplugs for the DE are on top, the E are by the exhaust manifold.... you could use shields and all when u turbo it but that can look kinda tacky if you overdo it to actually work effectively. People turbo the E all the time though so I suppose its ok.


Now all these young kids, I don't see their reasoning or dreams, maybe they are stupid. They all want these high hp street cars and shit. I wonder if any of them have actually driven a car around on the street fast that has over 350hp? "Yo man I want 400 or 500hp in my SilvIa dawg that be TiTe" thats just f'n hilarious.... Im not a pussy or anything when it comes to driving by far lol. but 500hp in a street 240 racing around would be just way too much aside from tracion... I've driven a Lightning with some mods so it was over about 400hp, and this is even in a heavy ass truck.... that thing just hauls too much ass for the street for some stupid young kid to be flooring it in traffic and swerving lanes lol.... man let me tell you there are some bad teen drivers, the worst even drink sometimes and think they drive good lol...... its just too much. Now I could see some veteran driver pulling out the 500hp'er out of the garage for a lil bit of Fun on a friday night, but some kids just don't realize what their asking for lol.

Seriously would you want some dumb ricer honda driven 16 year old who swerves in their lane and changes lanes without signals and drive aggressive in heavy traffic get behind the wheel of a 500hp car and drive the same way .......and still think they are Vin Diesel!!!!

lmfao :flipa:


:greenchai:badass: RICER who wants 500hp civic cause it would be cool

faster car the better........:o no matter what

btw i also think the ka has a lot of potentional but i think keeping it n/a and building that up might even be better yet. no turbo lag and the engine runs stronger... and no chance for the turbo to blow, you dont have to wait for it to warm up, etc.

take a look at this single cam baby!!!
http://files.automotiveforums.com/uploads/191822236112_16_full.jpg

haha... i just crushed the living shit out of a trans am gta. that's good enough for me.

btw, did anyone really know how much that rear spoiler on the s13 weighs? i just took mine off today and am gonna get holes filled up tomorrow. that must weigh a good 30 lbs...

I have to ask you guys a question...

...WHAT THE FUCK ARE YOU GUYS TALKING ABOUT?

Its as simple as what you are reading -- what -- the -- fuck, are you guys, talking about$?!@?$!@

I dont understand half the shit you guys write.


>faster car the better........ no matter what

no... NO... faster car does NOT = better.. IDIOT. The faster the car the more chances of IDIOTS getting in accidents.


> btw i also think the ka has a lot of potentional but i think keeping
> it n/a and building that up might even be better yet. no turbo lag
> and the engine runs stronger... and no chance for the turbo to
> blow, you dont have to wait for it to warm up, etc.

Are you serious? How do you know if the KA has potential or not, are you an engine builder? Even if you build an NA car, your powerband changes.. get some wild cams and chances are you'll only have power on the high end. You have to think a bit dude.. you cant just upgrade and NOT have downsides. If that was the case, the engineers would have already done it. Besides, WHAT requires no warm-up? Every car requires warm-up.. I dont see why the turbo cars would require MORE warm up.

> haha... i just crushed the living shit out of a trans am gta.
> that's good enough for me.

Are you sure his car was on?


> take a look at this single cam baby!!!

WOW. It looks just as stock as mine! :)
Menismo, you make me want to break something.. be quiet.


SRpower> I hear the heads flow more stock and the Single Cam has been used quite a bit for racing purposes.

I dont know.. from what I've always read, the DOHC has more potential and is a better motor than the SOHC.. but who knows, I dont. I know the SOHC was used a lot in NASPORT races.. I have some pics of some pretty crazy SOHC KA's... I was once looking into building one up.

Originally posted by old_s13

> haha... i just crushed the living shit out of a trans am gta.
> that's good enough for me.

Are you sure his car was on?


> take a look at this single cam baby!!!

WOW. It looks just as stock as mine! :)
Menismo, you make me want to break something.. be quiet.

yea that's what i was joking about mike... there really is nothing special about my engine.............

and yes the trans am was def accelering hard... at the light i pulled up to him and we stared at each other's cars for a second... then i gave a nice lil rev. he looked back and revved back...... there were cops all around the place about 500 ft ahead of us but we could tell they were busy with some accident or something... lite turned, i took off (thanks to my AA tires :D :D :D ), then he pulled at about 30 to a half car length ahead of me then my engine shifted and i pulled ahead by about 3 car lengths by the time i hit about 55.

i love messing with cars i would normally have no business even coming close to....

some beretta gt pulled up to me and layed on the gas, then i layed the smack down. it was sad... it was like i was racing a tempo. and they are supposed to do a 16.3 in the 1/4.....

also killed a 97 mustang... pulled hard right away and kept about 1 length ahead of him, then when it shifted to second i jumped another 2 car lengths.

don't tell me you can't make an n/a fast... i still have injectors and ecu upgrade to do. and i'm still an auto.

old s13

I think in their stock heads the E will flow some more air...... Maybe if both are ported and polished and completely tricked out the DE would be better.

i believe u can get a KA with NA power alone on street gas that is streetable everyday to atleast 185rwhp.... with a lot of money spent and a knowledgable race engine builder, you could get over 200.....

there's a rebuilt head for my ka-e on ebay.... worth it?
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&category=33617&item=2418097862

what else is involved with a motor rebuild? how much hp should this add?

shouldn't really add anytihng, its just rebuilt. A good performance one might do a few more HP on your top end, like one from REALNISSAN.com or something, there u can buy a head that already has some go fast goodies in it.

people say when they rebuild an entire engine back to new, it feels like a 10% increase in power... so you defintely gain a few HP just by doing some maintenace. I dunno about just a rebuilt stock head if that would add any power though.

thanks for the info..

did you draw that pic in your sig??

So which one would be more reliable/Longer Lasting? The SR or KA?

Originally posted by friday86
So which one would be more reliable/Longer Lasting? The SR or KA?

that's a totally open-ended question.

it depends on what you use the engine for, how hard you push it, and what mods you make to it.

if you have a 400hp KA that you use on the track every weekend and push it to it's limits, it'll obviousley break earlier then a 200hp SR that you only use on the track once a month. it all depends on the conditions.

Uhm, NO. When you rebuild an engine to stock specs, you bring it back to STOCK specs. You dont GAIN 10% in power, you just get back all that power that you didnt have due to worn components, poor compression, etc. That means if your motor used to produce 150HP, and your motor is worn and only producing 130.. you should expect to produce 150 again, once your motor is rebuilt.



Originally posted by SR20DETpower
people say when they rebuild an entire engine back to new, it feels like a 10% increase in power... so you defintely gain a few HP just by doing some maintenace. I dunno about just a rebuilt stock head if that would add any power though.

All of the 240's that i have seen for sale lately have had well ove 100k miles. And doing a turbo upgrade is not the best idea for high mileage, so if I were to pick between the 2 for a swap, I would go with the sr20det due to the fact that i am a jdm freak and i like the silvia approach.

KA...cuz when i blow my motor i can buy another off you SR guys.