Twin Turbos on rb25

[Kaido_RR]

hey,

Im just after some info on twin turbos on an rb25, im not looking to do it just after some info.

I am really just looking at something like stock gtr turbos. Would there be much lag compare to a gtr (or stock rb25 setup), also to apply such a setup on an rb25 would a custom manafold be needed (im guessing rb26 one wouldnt fit).

Would there be a problem with the exhuast system too, as it would require twin dumps etc (would a gtr exhuast setup from dump to front pipes fit onto an rb25).

in thread, im guessing that there would be enough room inside the engine bay? would the IC need to be a gtr setup or could a mod gts-t piping be used?

Im just after some general info, maybe if Sk come post his through it would be very much liked and anyone else for that matter

thanks michael

[discopotato03]

I'm no expert but I think you'll find the head stud pattern different between RB25 and 26 so not just a direct swap thing . Probably cost and complexity dictates single is way to go , later BB turbo technology helps lots too .

Just my two cents worth A .

[Squizz]

Exhaust pattern is different. A stock GTR is laggy enough, why would you want to make it worse?

If I had the cash my twin setup would be gone for a nice single.

[Sydneykid]

hey,

Im just after some info on twin turbos on an rb25, im not looking to do it just after some info.

I am really just looking at something like stock gtr turbos. Would there be much lag compare to a gtr (or stock rb25 setup), also to apply such a setup on an rb25 would a custom manafold be needed (im guessing rb26 one wouldnt fit).

Would there be a problem with the exhuast system too, as it would require twin dumps etc (would a gtr exhuast setup from dump to front pipes fit onto an rb25).

in thread, im guessing that there would be enough room inside the engine bay? would the IC need to be a gtr setup or could a mod gts-t piping be used?

Im just after some general info, maybe if Sk come post his through it would be very much liked and anyone else for that matter

thanks michael

You rang....

You could get an adaptor made for the GTR exhaust manifolds, the GTR dumps, engine pipes and exhaust will fit. The problem is you would need 2 X AFM's or an adaptor to run 2 X turbos with 1 X AFM. You could use a MAP based ECU instead of an AFM based ECU, but then the cost really starts to spiral for no real gain. Of course you should expect a lower level of performance (both power and response) than a GTR with the same turbos.

The bottom line for me is that I can get better performance out of a single for less cost and fiddling aorund.

[Kaido_RR]

cheers for the reply SK, didnt think about the AFM and the ecu to run it, i guess it really adds up maybe just stick with a single setup like something alone the lines of a GTSR (or RS) cant remember