Standard Exhaust Manifolds

[SimonR32]

Hey guys,

Going to need a standard exhaust manifold for my RB25 and was just going to use my RB20 one that I already have but it dawned on me that they may flow less?

Are the RB20/RB25/RB25NEO all the same cast or do some flow better than others?

Cheers

Simon

[Scradly]

I will just leave this here

http://www.6boost.com/

[SimonR32]

I will just leave this here

http://www.6boost.com/

Get any good photos of the back of my car at powercruise?

[bcozican]

same same

[zebra]

I am 99% sure all the manifolds were the same from R31 on.

I have yet to see any different castings for the single turbo RB's apart from the GTS-Rs

which is what you should get btw

[Trozzle]

I don't know about RB20 manifolds, but RB25 and RB25 NEO (turbo) manifolds are the same. I picked up a NEO manifold to replace mine on my 33 for a case of James Boags

[ClutchBurndout-:(]

sorry to steal the thread, is it worth replacing the stock rb25det manifold with a better flowing one for a car running around 170 rwkw? or is it pointless?

[Trozzle]

Don't bother mate. It's not pointless as such, but the stock manifold will happily flow 300rwkw and more. The gains you will get at that power level would barely be noticeable in any way other than a large chunk out of your wallet.

[R31Nismoid]

indeed pointless for stock turbo

300rwkw indeed is about the limit.

the 30det guys found pretty much smack on 300rwkw was the end, and swapping over produced some nice gains at that point.

on topic... i think the 20 ones are slightly different though.

been 6yrs now since i saw themside by side though.

does FAST use the same part #?

not the best check but sometimes confirms.