Rb20/Rb25 intake Manifold swap

[Guest fastzsyada]

Will the aftermarket side draft intake manifold meant for an Rb25 fit onto the Rb20?

[Z24O]

i thought only the early RB25 out of the r32 cars shared the same inlet with the RB20, ????the exhaust sides all fit though

[Evan Purple240zt]

NOOOOOOOOOOOOOOOOOOOOOOOOOOO

 

You cannot interchange rb20 and rb25 intake manifolds.

 

Evan

[Z24O]

NOOOOOOOOOOOOOOOOOOOOOOOOOOO

 

You cannot interchange rb20 and rb25 intake manifolds.

 

Evan

 

actually you can if the rb25(N/A) is from an r32 skyline,but this is the only RB25 that shares the intake side with the rb20,you can spot the head because it does not have the VVT solenoid that varies the cam timing

it is sought after in Aus because it is a simple bolt-on to the rb30 bottom end without having to tap an oil feed for the VVT

[Evan Purple240zt]

I was assuming he was talking about a DET motor and didn't want him to buy one that won't fit.

 

Evan

[RIPSNZ]

actually you can if the rb25(N/A) is from an r32 skyline,but this is the only RB25 that shares the intake side with the rb20,you can spot the head because it does not have the VVT solenoid that varies the cam timing

it is sought after in Aus because it is a simple bolt-on to the rb30 bottom end without having to tap an oil feed for the VVT

 

Sorry but your not quite right.

The R32 RB25 plenim is not the same as the R32 RB20, it may 'bolt on' but the runners are huge compared to the size of the RB20 ports so you end up with a big restrictive step in the intake, definatly don't do it, absolute waste of time.

 

He may be talking about a R33 RB25 plenim onto R32 RB20, in which case that won't work either.

 

Rob