SR or RB swap?

Im looking to get a 89-94 240sx coupe and wondering what would be a better swap? i know the SR is lighter but the RB can put out more power so ive heard...so what would you go with if you were in my situation?

Damn You!!!! Damn You To Hell!!!!!

im guessing your saying SR?

I'm saying "SHUT THE FUCK UP WITH UR DAMN ENGINE CHOICE QUESTIONS!!!!" or I'm saying SR, figure it out.

simple question no need to be a little internet hard ass

Dude, that "simple question" is asked ALL THE TIME on here and we're all fucking sick of it, if you read the older threads, if you don't want to make the effort, just do a search! The answers will come up and no one will get pissed!

ok thats understandable...

one word

research

best friend google, you'll find all the information you'll need to make a decision, depending on power/price/ETC.

try thinking what am i going to do with this car?

thanks for doing all the flaming logik. i'm glad you got it out of my system. and sidewayssilvia, layzienoy is right.. go look up both engines, see what kind of driving they're ideal for and go from there.. for now, don't post in this thread anymore. you're only going to be flamed more. also check the automotiveforums threads for this.. you'll find endless amounts of information

i know the prices and everything im just wondering performace wise what would be best

hmmm one is a 4 cylinder one is a 6 cylinder...which one do you think will make more power?

and the weight issue is not a huge deal, i think i remember reading that swapping to an SR from a KA saves you like 40 lbs., and swapping to an RB adds like 60 pounds (it might be 40/60 the other way, not sure). so its something to consider but not really a big deal, from what i have read 240's with the RB still handle well.

and jesus christ man there are 4 sticky's on this forum, they are almost entirely about swaps, give them a look, see what you find out.

lol yea but since you asked for someone elses opinion on what they would do....id say rb no doubt about it. IF your going to swap do one that will count. You can get same power out of ka as sr so.....sr is out of question to me. Dunno thats my outlook, either way you'll have more than enough power to enjoy.

yeah rb's are dope

ill help you out a little more

do not do the RB20 swap

SR is better for drifting than the RB motors ebcause only the RB25 and 26 are wortht the hassle, the weight affects your car differently and in things like drifting and autoX it makes a difference having balanced weight

Instead of flaming...you should just have a certain quote like. "Sorry were Closed!" and clsoe the thread or delete it

man, i was trying to think of something funny SR, RB and KA could stand for, but after 30 secs of hard thinking, i gave up.

lol, yea

monoxide...we are not moderators we cant delete or close threads!!!!

rb25 is your best bet dude. More expensive yes, but still the better choice in my eyes. Weight ratio does have something to do with drifting...but if your used to a rb swapped car then it wont have any difference on you.....get what im saying??? since you will have learned how to handle the weight ratio you have with the heavier rb. Everybody says weight this weight that....half the people on here prolly couldnt feel a weight difference between an sr and a rb car.

alot of the guys in D1 are running RB powered silvias, so if they're doing it, its obviously not that big of a deal. dont get me wrong, i'm not trying to compare D1 drivers to us average Joes tho.

So what if the guys that run in the d1 have rb silvias, they all so have a lot of sr in silvias too. (just say'in)

So it all comes down to personal preference so ill state mine...I dont ever plan on Drifting sooo...the RB25DET would be my Weapon of Choice...anything with a potential of like 750+HP would be sweet...but if you can drift with the RB why not take the extra money buy the RB and have both a really fast street car and an awesome drift car?

So what if the guys that run in the d1 have rb silvias, they all so have a lot of sr in silvias too. (just say'in)


i was just saying, all those people saying rb's throw off the 240s weight distribution. if D1 guys are doing it, its not that bad.

sr = sick ride
ka = Kant accellerate
rb = ?
i know i spelled "cant" wrong but it was funny

And what im saying is kinda the same thing, they drift with SR's and RB's and are still good.

6 cylinder is superior in every aspect except for the fact that you have to buy 6 spark plugs instead of 4, same with fuel injectors, rods, pistons, exhaust manifolds will have more material=more$

other then that it excels in everything else versus the SR

I guess the real question here is how much power to the wheels do you want, how fast do you want it in the 1/4, and who is going to do the engine work?

sr = sick ride
ka = Kant accellerate
rb = ?
i know i spelled "cant" wrong but it was funny


you got it all wrong their buddy

SR=Sadly Riced-out
KA=Kicken Ass
RB=Race Breed(for real i hear lol)
CA=Canadian Antique(hahaaaha)
VQ=Very Quick
VG=Very Good

SR=Still Rapes KAs

i think i might of created a fight, yay me!

its funny that ur name is sr20det power but u say its sadly riced out

He's explained many times that the name came from the time when he was wise and liked the SR, but now he's dumb and likes the KA. lol, jk, both are great, but if the you only like the KA now, doesn't that make you a bandwagonner? Since KAs are in right now.....

It's weird, 2 years ago when the SR was all that, I wanted to turbo the KA I hated the SR and wanted to make a mad powerhouse KA and kill all SRs, but now that the KA is in, I like the SR more.....I'm a reverse bandwangonner....

you reverse bandwagon bandwagoner

SR vs. RB? The RB nearly has limitless power-range... RB wins!

the ka is a better design then the SR and will always make more power

thats all that needs to be said, if you question me go find the countless arguments, debates, reviews, write-ups, and technical articles on the engines.... if you know about engines and making power, then you know why the KA is better, enough said.


but in the end do I really like any of those engines? maybe not as neither can make the ground shake from mass amounts of power and both need forced induction or nitrous to run anything most people would consider actually fast. Which leaves you to ponder... are those motors fast or just play toys?


but I do like 240sx's....

Dude, enough with your 9 liter V8s!!

ok ka's cant accelerate????? bwahahhaahahahahahah everyone here go to www.ka-t.org go to the videos and watch them. Tell me a 500 hp ka cant accelerate after you watch the videos. And also tell me that it doesnt sound better. These are home made videos too.

sr = S hould of bought an Rb.


i say the motors are both fast and play toys. I mean when a 400 hp 4 cylinder can smoke a v10 500 horse viper.......where's the american mustle there???? i mean come on. turbo 4s get my vote. And its always cool to smoke a viper because the douche bag driving it thinks he's the shit when actually a viper is a piece of shit. I mean what a waste of money.

SRs and RBs are like...........

The coolest thing ever. wow OMG.

SR=Still Rapes KAs

http://ka-t.org/ipw-web/bulletin/bb/viewtopic.php?t=1042
http://ka-t.org/ipw-web/bulletin/bb/viewtopic.php?t=756

The KA is in? Since when? I have wanted a KA-T since I saw the price tag on an SR engine.

If anyone here knows about engines or making power, they would know that the number of cylinders isn't important.

The KA is the new "in" engine for the 240, everyone is starting to do it, I'm nto saying you just started thinking about it, I'm saying all the hangers-on are. And I like the SR, who cares, I'm not looking for an 800hp setup with 4 second 1/4, I'm looking for a high revving, 250-300hp, daily driver.

The only reason everyone is starting to consider it an opition is because people have discovered that it is quite capable of supporting enough power to impress the average joe. A lot of rumors have been ended.

yea i forgot the first time i heard about a 500 horse ka...it was a long time ago...but i know i have a magazine on it somewhere. And yes i know it doesnt matter about the number of cylinders....but all the country ass fucks around here think they do. there like baaa its four cylinder.....there all about the v8 and shit.

i love the KA-t's at ka-t.org, those cars are very nice, nice dynos they have put down too...The KA is starting to become the new "fad" and the SR is still pretty popular though.

yea SRs are still way popular, you ask a guy who doesnt know shit about 240s and he's almost garaunteed to bring up SR20. which brought to a realization, i was looking on ebay not too long ago, and pretty much every 240 WITHOUT a SR20 said something along the lines of "ready for SR20", "put a SR20 in and this thing will fly" and blahdy blah. now i still like SRs alot, but its just getting ridicolous how people think they're the bomb just cuz they have one.

how about swapping a 2JZ, then i'll be impressed, lol. better yet, swap a 13B!!! that'd be cool.

If you are thinking RB20...it is a waste of time. If you are thinking RB 25 or 26...go RB.
Otherwise SR20DET rules. Basically the same displacement as the RB 20 with a fraction of the weight and it takes up MUCH less room under the hood. Yopur car will handle better and it will be easier to work on.

And another who doesn'T say anything about the KA-T. btw, I was waondering, has anyone swapped an SR20 into an RX-7? Cause I love the RX-7, but I'm not a big fan of rotaries, I mean you have to learn how the engine works all over again lol, anyways, I got nothing against it, I just like the old pistons and rods type of engine....oh and I never said the KA-T was bad, I know it's an awesome engine, it's just that personally, I like the SR better.

yea i forgot the first time i heard about a 500 horse ka...it was a long time ago...but i know i have a magazine on it somewhere. And yes i know it doesnt matter about the number of cylinders....but all the country ass fucks around here think they do. there like baaa its four cylinder.....there all about the v8 and shit.

Word. I have the same exact problem. All the rednecks talk about is V8s. Well guess what Joe Bob and Billie jean? If a 2 cylinder has 5.0l of displacement, the heads and cylinders are designed correctly, the cams are designed correctly, ingnition is ample, and the AF ratio is correct, it will put out the exact same amount as a 5.0l V8. Given the flow is the same, VE is the same, compression is the same, and fuel quality is the same. But let that be our little secret.

Once again why the SR is just as capable as the RB. Besides the aluminum vs steel. Friction can also come into play in high HP levels though. Think about it, you have 50% more friction than with 4 cylinders. But whatever you want ultimately weighs out what is logical.

And another who doesn'T say anything about the KA-T. btw, I was waondering, has anyone swapped an SR20 into an RX-7? Cause I love the RX-7, but I'm not a big fan of rotaries, I mean you have to learn how the engine works all over again lol, anyways, I got nothing against it, I just like the old pistons and rods type of engine....oh and I never said the KA-T was bad, I know it's an awesome engine, it's just that personally, I like the SR better.


Sig Auto did a SR into a RX8, and i've seen a 2JZ in RX7, but no SR in rx7 yet, but i'm sure someone has done it. as a matter of fact i remember reading about one. it was a silver and black FD that was covered in Modified Mag, so yea its been done before.

and rotaries are the bomb, literally, them bitches detonate if you cant control them right, lol. i love roataries though, light and powerful, you just have to beware of treating them wrong cuz they'll make you pay, kinda like girls, hah

I know they are great if you like backfiring lol

the rotaries always are overheating and blowing for some reason..Plus they take up so much room, you can remove the cage around the engine but then you cant control the torque and it will probably twist the chassis...I would swap a 2jz, or rb26dett would be awesome if someone could do it....

I think I'll stick with my dreams of getting a 240 lol.

the next newbie to start a sr ka rb power struggle should be shot and banned by the moderators its getting old we need to stop running in circles and unite as one big 240 loving family

Amen.

...And another who doesn'T say anything about the KA-T. btw, I was waondering, has anyone swapped an SR20 into an RX-7? Cause I love the RX-7, but I'm not a big fan of rotaries....
I have pics at home of an RX7 with an SR in it. I'll try and get them scanned an posted. The SR is one of the most swapped-in engines you''l find. I have seen MANY RB20s swapped out for SR20s. Who has seen a KA swapped in for anything?

good point.

I guess lol.

I have pics at home of an RX7 with an SR in it. I'll try and get them scanned an posted. The SR is one of the most swapped-in engines you''l find. I have seen MANY RB20s swapped out for SR20s. Who has seen a KA swapped in for anything?


I've seen quite a few KA's swapped into other cars.....

mainly older Datsuns

You WON'T see a Japanese dude getting a 240SX clip shipped in for a swap though I'll bet. :)

actually yashio-factory wanted to start making ka parts...so stick that in your pipe and smoke it. They have a 240sx and were going to sup up the ka but didnt have the time for something i forget the story....but soon you ka haters will see. I bet in the future they will because it will be unique over there, but the ka has to be more openly used to get its name out there. Im waiting for the first ka drift car to come out of the woodwork.

A KA powered JDM car would be RARE and ONLY would be done to be different. The SR swap is COMMON and a definate upgrade.

Sr swap are cool and all but ur taking a risk. (CA that is)
rotary is the shit, sr are cool, KA-T are nice.
anything that has 2do with skyline is sick !


btw how in the hell u don't like rotary? i love my SR but rotary Turbo-engine is powerfull and light.

and blow, and take up lots of engine room...its hard to mount a big turbo in those bays..

and blow...
The MAIN problem with the wankel! They are certainly nice, but if you overheat ONE time.....it is history.