Rb26 Intake Plenum On An Rb20

[Canadian 32]

So I pretty much just wanted to ask if it is possible to mount an rb26dett intake plenum on an Rb20det successfully? If so what is needed to be done? Any kind of response would be greatly appreciated. Thank you very much.

[DJRIFT]

im not sure what other info people have but i can tell you a few things.

the RB26 will not bolt strait up to the rb20/25 head but trust make an adapter plate to make it.

if you got one with the 6 throttle bodys than i think you would find grater responce and alround proformance benifits from it but a GTR plenum with the throttles atached is usualy worth a lot. probably not worth it.

thats when you go for the greddy forward facing plenums. they sell for around $1000 with a big single throttle. plus they will bolt straight up to an rb20/25.

hope that helps.

[Adriano]

Ypu would have to get the complete manifold with throttles and the piece between the throttles and head, then make an adapter, usually rb20's need all the low down torque they can get, putting a gtr manifold will lose you heaps of it, and the standard manifold can still be used to make heaps of power, why do you want to change it?

[GTRgeoff]

Tests done have shown 20's lose about 5-10% power across the board as the intake velocities are much slower. The adaptor is for 25's I believe which can run this due to similar displacement.