rb26dett---->240

Discuss the RB20, RB25 and RB26 series engines.
polyS13
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How hard would it be to drop an rb26 into a 240? I'm sure this is on here already and i apologize for the redundancy. Also how difficult would it be to install the transmission and would everything line up for the most part or does it require major mods....Thanks


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Holisticbeatz
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Search function. USE IT.

dcdrifter
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Not for a beginner. Will also cost BIG bucks.

S15_silvia
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yes very expensive have to convert to single turbo,or get RHD conversion, or lots of custom work, night says if you do a RHD conversion it wouldnt ba any harder then a rb25.....i hear its like 2k to do the RHD conversion?

dreamsOfSkylines
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It wouldnt be that hard, just need an a31 crossmember, single turbo conversion, and some custom transmission mounts.

FAST-DATSUN
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WE starting on the RB26DETT into a S14 next week we're keeping the car for awhile so that we can do the 'tt and the single swap to make the kits for this swap. TT will need some steering and turbo mods... Will keep pictures on web site with updates..

MACK @ MCKINNEY MOTORSPORTS

Sr20 B12
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My friend's RB26dett S13 was finished since last summer. As far as I know this is the only RB26dett 240sx that is running and driving in America and it's not that hard to do (at least in the way you guys are describing it). It looks so simple, you guys would be banging your heads.

I'm sure you guys don't belive me, but it truly is a work of art. Right now it's getting some body work, but it is a Lambo Diablo Orange (4 layer with 2 layer clear), not sure of the bodykit but I belive it's a Nismo copy, using complete Tein coilover system, 300z rear end, Brembo brakes, 3.5" Jasma exhaust, 17" Oz Rims with Nitto 555R rubbers (which break loose in 3rd gear on the street), Bride seats, and custom dash bezel and many other things. Engine is still stock for now and still retains the twin turbo setup (no clearance issues).

It's sheduled of a photo shoot with a "popular" magazine in the near future. I don't have any pictures of it, but will get some when it's total finished.

Sr20 B12
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I also have a friend who has a 95 240sx with an RB25det (with vvl?). This car is supposed to be the monster out of the bunch. Has chromed Greddy intake manifold, using a 60-1 turbo, Electromotive engine management and some other things that I can't say as of now. This one is looking at 500whp's on moderate boost and 600+wph's on high boost.

Will get pics of this one also.

FAST-DATSUN
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What about some picture of them??????????

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Nurv
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i would like to see a picture of it. its not that im doubting you but if he had "no clearence problems" then hasnt anyone else been able to perform such a task? BTW. for as long as I have been around wrenchheads and automotive there is one thing is true..Anything, and I mean damn near anything is possible with the right amount of money given to the right people.It would defeat the purpose to go single turbo conversion on the rb26. the only reason there is desire there is because of the TT feature. i you want single opt for the RB25 and then see Night, he will set you up :)

dreamsOfSkylines
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Nurv wrote:i would like to see a picture of it. its not that im doubting you but if he had "no clearence problems" then hasnt anyone else been able to perform such a task? BTW. for as long as I have been around wrenchheads and automotive there is one thing is true..Anything, and I mean damn near anything is possible with the right amount of money given to the right people.It would defeat the purpose to go single turbo conversion on the rb26. the only reason there is desire there is because of the TT feature. i you want single opt for the RB25 and then see Night, he will set you up :)


If you want to keep the twin turbo setup you need custom steering linkage, I don't think it would be that expensive (relative to the price of the rest of the swap) since its basically a set of tubes with ball joints.

Despite the common misconception, there is no law which dictates Twin turbos are better than a single, the only real advantage is sometimes you can get a more direct flow of exhast to the turbos (esbecially boxers and V engines, but even an inline sometimes). Twins do not offer less lag than a single unless they're used in a sequential manner (Which the GTR does not) and sequential turbos have there pitfalls aswell. With twins you are spinning each turbine almost twice as fast as in a single which can lead to a shorter life. The lag vs power equation basically comes down to the dimensions of your turbo.

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Nurv
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True there is no law which dictates but just depends on what you plan on.it is cheaper torun single turb but just depends on preference. im just saying i do see any reason to justify a RB26 single turbo. after all that spent on steering clearance and extra for that specific motor you could have machined and installed larger forged pistons and stage-12 upgrade turbo. but thats just aprrox. and best bang for the buck.

though saying you have a twin turbo 2.6 under your hood sounds impressive but its just about bragging rights.

veilsideS14
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NightXCZ77 wrote:... the RB25 is the way to go...then you'll have even more bragging rights.


That is good and all in theory but you still can't claim you have the fabled Godzilla engine in your car. I can :D

But seriously, Night brings up a good point. There is some serious economic consideration to doing the RB25 over the RB26. My install is in the $15K plus range just for parts alone. But I chose to do my modifications at the same time as installing the engine. To each his own.

veilsideS14
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Like I said Night, to each his own. The only thing I have to argue with you about is the aftermarket support of the RB26 versus the RB25. The engines are quite similar as you mentioned but they are not identical and this ultimately limits the potential of the RB25. True, just about any engine can be built up and can make more power than just about anything else out there but it gets to a point where the cost of doing so will be less with an RB26 engine than an RB25.

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hashiriya13
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veilsideS14: You got the RB26 now or is it being installed now?

You both made a good point(to each his own). I spent 6 years in Japan hitting the race scene almost every weekend and Both of those engines are plenty capable.(which you both know) But for big numbers you start borrowing from big brother (RB26) in the end for the RB25. As you stated Night. I have the 25 and if I had had more $$$ I would have gone with a 26 just because. But I am still very happy with the 25.

veilsideS14
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The RB26 is in my car and running. Sounds wicked. Anyway, I agree with ya but I also agree that both engines are amazing in the 240 chassis.

polyS13
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hashiriyra13 I noticed you're in Cali, how'd you get your car to be legal with all the smog **** we have to with here?

Redline240
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veilsideS14 wrote:The RB26 is in my car and running. Sounds wicked. Anyway, I agree with ya but I also agree that both engines are amazing in the 240 chassis.


How long have you been running it? S13 or S14? Single turbo swap or stock twin?

e-mail me... [email protected]

I'm looking at this swap this fall, if you don't mind i have a few questions for ya.

Redline

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hashiriya13
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The rb really bring the 240 alive. I cant believe the feel of it even on stock boost.

Yes I am in Cali and have been driving it with the RB since the 19th. Not exactly legal at this time. But I am in the military and have my IL plates on the way(thats where i'm from so I can get my car registered there). No emissions where it will be registered. So for the next couple days I have to play it safe. But even here there are ways just matters how much you want to spend.

Sr20 B12
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Sr20 B12 wrote:I also have a friend who has a 95 240sx with an RB25det (with vvl?). This car is supposed to be the monster out of the bunch. Has chromed Greddy intake manifold, using a 60-1 turbo, Electromotive engine management and some other things that I can't say as of now. This one is looking at 500whp's on moderate boost and 600+wph's on high boost.

Will get pics of this one also.
FAST-DATSUN wrote:What about some picture of them??????????


I have pics of it......... I will start a new post.

kkekeisen
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I'm not entirely sure why people say the rb26 swap costs so much more than the rb25. I can get a rb26+rb25 transmission+ecu+wiring harness for ~$4000. Now the rb25 front clip costs ~$3500, and the only thing that I'm missing are the AFM's which I can get from a junkyard Z32 or Q45.

The only thing needed for the swap that is different are the mounts fron McKinney...

Siddhartha
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Mack, whats the word on your rb26 mounts?


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