sr20det or rb25det?

should i go for the s-15 sr20det or the rb25det?

What kind of car do you have and what are you going for? Drifting? Drag racing? Show?

Doesn't matter what t's for, I would get the rb25det cause of the larger displacement.

Originally posted by Lmnhed
What kind of car do you have and what are you going for? Drifting? Drag racing? Show?

car: '96 240sx

A little bit of drag racing and show, and i know the sr is probably the best for drifting, but i just wanted to know the pro's and con's

well i got an Sr20DET in my 240 and let me just say that it give so much kick on high rpm starts.I swapped in a S15 spec motor which took 3 days to actually make it fit under the damn hood by professionals.But it gives off a sweet 250 HP from just the motor.Only problem i have with my motor is that i'm still trying to get used to the quicker shifting after the first gear.After first gear, my RPM's drop only about 1000 which raises rather quickly.I didn't really notice how small the power band was between 1st and 2nd, but as soon as you hit 2nd gear, any civic,prelude, or anyother type of rice rocket is in your rear view mirror looking like a spec.Thank god for my shift light, or else i think i would be shifting past redline.still have some getting used to, but in about a month i won't even need my monster tach.

Originally posted by joebowlr21
well i got an Sr20DET in my 240 and let me just say that it give so much kick on high rpm starts.I swapped in a S15 spec motor which took 3 days to actually make it fit under the damn hood by professionals.But it gives off a sweet 250 HP from just the motor.Only problem i have with my motor is that i'm still trying to get used to the quicker shifting after the first gear.After first gear, my RPM's drop only about 1000 which raises rather quickly.I didn't really notice how small the power band was between 1st and 2nd, but as soon as you hit 2nd gear, any civic,prelude, or anyother type of rice rocket is in your rear view mirror looking like a spec.Thank god for my shift light, or else i think i would be shifting past redline.still have some getting used to, but in about a month i won't even need my monster tach.

that is kickass...i am actually looking for a 240sx right now to swap in a SR20DET but i dont know so much about the SR20DET but someone told me that the motor is only 205hp stock.....is this information correct???
any info would be appreciated
thanks
G2

on the S13 Sr20det motor it is 205hp stock.But i paid alot more money and it took alot more effort for me to get the S15 spec motor which is 250 stock.I just got a newer version of the motor which came with more HP, but it was also harder to it into my car especialy with a 180sx tranny.I had to get a better tranny and the company who sold me the motor said the 180sx tranny is alot more durable then the us 240sx tranny.So basicaly i'm jsut trying to JDM my entire car.I really want to get an S14 front conversion with a jdm 180sx back.My dream is to own a sil-eighty and i'm halfway there with power checked off.Now i just need to save for the outer cosmetics and my dream is complete.

:sun: :sun: :sun:

fuck yeah, your fucking awesome joebowlr, id go with the s15 motor anyday, glad to see that we have something in common for the love of the s15 sr20det. question though, how come u didnt stick with the six speed tranny (even though i heard its not all that durable compared to other nissan trannys), a 240sx with a six speed would be like the girl next door with the perfect package all around (if u know what i mean)
;)

The shop i ordered the motor through didn't include a trannny so i bought a tranny that they suggest would be good for the engine.I checked around other places and found many include the S15 tranny, but they are not guarented with warrenty or anything like that.ALso it is not as easy to find an S15 motor with the 6-speed tranny since they get swapped up pretty quick.The store was also telling me how if i wanted to wait for a 6-speedi could, but there would be problems with it.They told me about how many customers with the 6-speed were have power band problems.They were'nt getting the full potential out of there engine which lead to them spending more money on the mechanics trying to fix the problem.So i just told them to hook me up with a tranny that will last for a goodwhile and since i bought an older 180sx tranny, i have a 5 year waranty that says if for any reason the transmission fails to respond they will replace it free of charge.I was like F@#k yeah.

Oh and i fnaly got that whole 2nd gear issue fixed.I guess the person who owned the tranny was experimenting with the gear ratios for the purpose of drifting.The mechanic i went to told me that alot of people who enjoy drifting make their 2nd gear real short so they can take corners at 3rd gear,shift-lock down to 2nd gear, shift back up to 3rd, then accelerate out of the corner.I decided to keep this setting to try it and get a feel for it.

RB25DET is king. I have one in my 240SX and haven't been beat by a SR yet....they haven't even come close. Http://240Skyline.nissanpower.com

Night

Dude, I can get the S13 SR engine (205hp stock) for about $2500, what's the going price for a S15 spec motor with tranny?

There's a noticeable difference in price...SR's ranging from 2k-3k while the RB25DET ranges from 3.5k to about 6k

So whatever fits your budget more...oh and RB parts will be more expensive

It depends on where you want to go wiyh your project. If you want more power i would suggest going with an RB26dett.

go with the sr. there is more and more support in the us for the sr now but barely anything for the rb. go with sr

about the rb26dett, i've heard of people dropping them into a 240sx, but i've never heard how difficult the swap actually is. anyone happen to know?

Its diffucult.

I hear the S15 6-speed is made of glass, and it cant handle much power.
Some guys in Japan are swapping in S14 trannys and using the S14 driveshaft.

You guys should all take a look at my sig.

Also, S14 frotn ends for hatches do exist but it doesnt look too hot.
Check www.taka-kaira.co.jp

OR

www.santeca.com

These guys are the shiz, my friend works for them. They import East bear and have a Silvia project going on(w. SR20 and GT3037 Turbo(

Actually, I price the RB25DET clips at $3250. They put a good 250 to the wheels unlike the S15 SR which gets about 210-215 to the wheels. RB25 is also cheaper than a S15 and requires a lot less work to get in.

The RB engines have TONS of support here in the US for stock replacement parts. They also have a great amount of aftermarket support being offered by several companies in the US, and prices are very similar to the SR aftermarket prices, some parts are actually cheaper.

RB26 swap is fairly difficult if you keep the twin turbo setup. If you go RWD tranny (RB25) and single turbo, it's a fairly simple swap.

Night
http://240Skyline.nissanpower.com

Installing a RB25 would still requare alota work to put in i assume since it still is larger the the SR20. And that would cost money as well alot more then the SR20, over all im guessing its alot more expensive. Ohh well i like the RB25 setup more, if i had the money thats what id do :bloated: :bloated:

Alrighty, here's the lowdown on this swap:

$3250 RB25DET Clip
$400 - New Driveline
$150 - Parts, ie: fluids, filters, wires, crimps, etc...
--------
$3800 = 250 RWHP


$2250 RB20DET Clip
$0 - Uses KA driveline
$150 - Parts, ie: fluids, filters, wires, crimps, etc...
--------
$2400 = 205-210 RWHP


That's it guys. That's all the cost behind both swaps.

Night

all right, so which engine (sr20 or rb25) is more modifiable? from everything i've heard, the sr is easier to find parts for but the rb responds much better to mods. supposedly the rb can be built to 500hp on stock internals with fairly simple mods; how difficult would it be for the sr to equal that?

as far is i know the SR wasent built for mad power like the RB...:bloated: :bloated:

:newburn: :newburn: :sun: :flash:

RB is easier to mod and get great results with. To get the SR to 500hp takes a lot of work. The RB's have a lot of parts available for them. You can get just about anything. 500hp is possible on stock internals.

Night

i wouldnt worry about what model sr20 you get, id honestly go for a s14 one, simplest to fit, as far as power, the turbos are a little different(between s14 and s15, and even between older and newer s14), but youre better off spending the extra money on a front mount cooler and a big exhaust, than on trying to find an s15 clip . ive also heard the 6 speed is not the strongest, nothing specific though, so depenging on how far you wanna go, you may never have any trouble. fitting the rb25 will be alot harder, youll either need a plethora of o.e nissan mounts on hand, to see what MIGHT work, or custom ones, plus modifying the loom, custom heater hoses, radiator hoses.. depends if its all worth it to you, for a show car, it does have a bit more ooh ahh factor, cos its not ment to be there. a stock bottom end of a sr20 is regarded to be safe for slightly over 400ps, the rb around 450 or so. the rb will be more driveable though, capacity = torque (sorta). then theres weight bias, which will ofcourse be better with the sr, then again, up until just recently, the best drifter in australia drove an s13 with a 450ps rb20, and quite spectacularly :D his personal car now though is still an s13, but with an sr20 so..

Not trying to start a flame, but it sounds like you're trying to tell me how hard the RB swap is when I've already done it. Click on this: http://240Skyline.nissanpower.com That's my car, my install.

The RB25 is not hard to fit in the 240SX. You don't need any plethora of mounts, all you need is a R33 clip with the cross member and RB engine mounts to make it fit. There is no need to "modify" the loom as all you do is integrate 5 wires between the RB and KA harnesses unless you wanna go the hard way and integrate every wire in your car. Custom heater hoses aren't necessary, neither are radiator hoses. The RB25 bottem end can handle 500+ on stock internals. If you live in Australia, you should know that. One reason your judement on hp might be off is because of the dynos in australia, they tend to rate everything lower than they actually are. Take a RB25 in Japan or the US and dyno it, then the same one in Australia and you're probably looking at a good 25-30 hp rwhp difference between the two just from different dynos. This was told to me by Meggala who founded Meggala.com

Night

fair enough, what about the tail shaft then? and the gearbox cross member, shifter location? clutch line? im not trying to start a flame war either, im just interested, ive also got a few friends with rb20s in s13s i was aware of the cross member swap option, but on bens silvia, that ment the tail shaft needed mods, and the shifter was further foward then stock. peace.

I have a question my buddy mentioned it to me and i did remember reading it some where about how the Skyline motors if used to swap with an left hand driven car it would have to be converted to a right hand drvin car. because of the way the motor is set up. you can only have it as a right hand driven car. ANy one ever heard of this or can show me some proof that it is okay to swap with out changing it to a right hand driven car. thankx all!!!

:confused: :confused: :sun: :flash:

Thats not true....

SR's are right hand drive cars, and they come out fine...

and if you want proof that it's ok to stay left-side drive with skyline motors, just check out nightxcz77's site.

i think it had something to do with the location of the down pipe and how its on the other side or something and it cant cross over the tranny there for it has to be right hand driven. maby now there is a way to fix that but ill check out that sight. just that i remember reading some where many years ago about the swap and it had to be converted to right hand driven. well i went through that sight a hundred times and no where does it say anything about right hand driven or not, nor does the pix of his car help the windows are so dark that u cant see nothing at all inside. Anyone else have any proof that its okay to install the RB with out changeing it to right hand driven, just to make sure cause im sure it ok just some hard proof would be alot more reasuring thankx guys!! and it will shut my friend up :confused: :confused:

well if that info can't be found on his site, how about we simply ask him. hey night, your car is still left-side-drive after the motor swap, right?

You can absolutely swap in an rb25det and leave the wheel on the left. The downpipe fitment issues are with the rb26dett.

Originally posted by NIF
You can absolutely swap in an rb25det and leave the wheel on the left. The downpipe fitment issues are with the rb26dett.

the twin turbos also impede with the steering column in the LHD cars.

Ya thats what i though ohh well, so you will need alot of custom work to get a RB26det in there then huh!! ohh well RB25 is good enough for me.!!!

i have a 93 240sx and i swaped the engine with the RB26DETT,. i had some problems when i swaped it but everything worked out and the engine is a monster. some problems when i swaped it------->i had to take one of the turbos off and instead of twin turbo its just one. but even thought it still gives me about 310-320 hp at the flywheel (including some other mods i made to the car) the swap was fairly easy for everything except the turbo incedent. i have a 6 speed gear box, and its awesome... i had to do alittle frame work but it didnt take too long and everthing worked out great. i bought the engine from a japanise import-export dealer and it cost me $8500.00 including shipping. i have never been beaten in a straight line race. (that is after i got the engine swaped, but before that i have been beaten many times) well i dont race much, yet, because i am waiting for more $$$ so i can get some more mods... etc well if you wanna know anything just ask....

4 month old thread, dude. :wink:

Ya, please dont bring old threads up...

Do you know Alan Obermiller by any chance?

uhh, i wonder what part of st louis tokar lives.......i like to think that i know hte 240 market around here pretty well, and if i dont, alan sure as hell does.....i've never heard of this rb26 powered 240sx.....and surely someone i know would have. :confused:

and...this kid is only 16. hmmmm........

another dirtydawgs on our hands? why to people need to be so damn feeble? i drive a 12 year old, 344,000km Pontiac family car with an automatic transmission and no hubcaps, yet i'll readily admit it. i won't lie about what i drive. i don't necessarily like the car i drive, but it get's me around, and i know i'll have a 240SX before October (have to wait until after my court date).

You had one for a day, and have driven many a 240, thats more than some people can say

Diry Dawgs also claimed he has trouble during the swap, but Heavy Throttle helped him :rolleyes:

Were dealing with a new kind of lamer here. A very educated one lol

ya i am 16, and i did the swap, i bought the engine from a japanise import-export car dealer, i did the swap at my brother in laws shop (where i work), and i live in west county st. louis, i ushally go to the racing strip at gateway but since i did the swap.. i have been working on the car and havent had much time to race with it, ............ and if you wanna check my car out, and you live in st. louis why dont you drop by my brother in lwas shop its called Vasas performace parts. the address is 14204 manchester rd. why dont you stop by, and just ask for me (sasha) i am ushally there.

Post pics of you, next to your car, with a sign that says AF OWNZ ME and a finger in your nose.

i'm still doubting this rb26dett in a 240......vasas performance isnt listed in the new phone book, and no one in stl has ever heard of vasas performance, at least the peole i've talked to. but i'm comin out there this week.

Hahah I did a mapquest and nothing came up....RB26DETT swap by yourself...hahaha, not even unstable could do that shiz. As I said, post pics and we shall see...

i looked it up in the white pages....no such thing as "vasas performance parts". sorry kid, i'm raisin the flag until i actually see it.....and i will be driving to find it. :bs:

I think we got another DIRTYDAWGS

god, how can we be so blessed. Not even that, but DIRTYDAWGS sticks around and contributes NOTHING and posts in caps.

All I can say is if this guy is telling the truth, then I will bow down to him.

well I wasnt going to put the Ownage link in my sig but not only does he contribute nothing he repeats himself at least five times and then adds some gem of information he heard from his Uncle.


and if he isnt BSing at least the pic of him with his finger in his nose will be funny.

Does anyone know if Heavy throttle is a reliable importer of SR20's?
Has anyone gone through Heavy throttle and successfully swaped an S15 engine into their car? I'm looking into an S15 or S14 swap into a 97 or 98 240 an have no idea where to take the car and engine to so it can be properly swapped in. Is anyone here from New York in the Poughkeepsie area who has done this swap and could post up some pics of their car? I'm looking for a good car shop that has experience with the swap in the New York area. Thanks for the feedback.

your one lucky guy, your pretty close to heavy throttle, they are EXCELLENT at what they do....i, as well as many other enthusiasts, consider them to be the authority on sr20det's. go with them if you can.

you know i have never cared what people said about me, or what people think, if your going to doubt or just not beleive i dont really care, because i know the truth and what i said was the truth... whats the point of bull shitting??...........there is no point.........and thats why i dont bull shit you wanna see my ride why dont you come and see it, if you dont then just forget about it.........and if you cant see my ride at the shop go down to gateway and ask about the ametuer drag racing league... youll see my name right next to it will be a pic of me and ride--> name=sasha tokar ride =240sx rb26dett.. why dont you come and see.......(and vasas performance parts was just opened up last month by my bro in law named gene nimell..........i guess thats why it might be unlisted yet.)

you cant blame any of us for saying bullshit.....vasas performance isnt in the white pages, nor has anyone ever heard of it in st. louis....also, when i put the address into mapquest, it gave me a general area saying it couldnt locate your street adress. do you go to the tuesday night street tire night? or do you go to the wed. night event that is drag radials only?

also, where on manchester are you? past barret station rd.? and if i'm going west on manchester, what side of the road are you on (the same side as sams, or the same side as the mall)??? cause i'm comin by tomorrow

i might be up at gatway this tuesday,. look for a black 240sx with a sticker on the right fevder thats says Vasas performance parts, and i got a GTR logo in the back instead of the nissan logo.

go register as a user at www.stlstreetracing.com/forums



and where on manchester is vasas....refer to above post for my ideas

its on the same side that sams is on, he just opened it, and he doesnt have a sign on his shop yet, but there is a wooden sign near the road, that says vasas performance parts shop and garage. its easy to miss but its there, you just gotta look around.

Originally posted by tokar400
and i got a GTR logo in the back instead of the nissan logo.

:spit:

Now I REALLY think your BS'ing lol

Why do I have to come to St.Louis to see your car. How hard is it to post pics? Every other RB26/240 hybrid owner has posted pics. Oh right, cuz you dont own it. I dont belive you untill I have evidence, either pictures or from Lucas.

I'll let everyone know today......that is if i can find the place..lol

Lets bet on whether its BS or not.

didnt have time to go by it today unfortunatly......work called me in.....damn work, always makin me their bitch:bloated: i'm comin tomorrow

well if you wanna see my ride come by between 7am-8pm every weekday........before school starts