Intake Manifolds

[Wazz]

Ok does anyone know of ANY companys that make intake manifolds for rb20's even if its just the top half.

also.. i saw it somewere in a magazine.. someone had put a standard rb26 intake manifold onto a rb20 and done tests.. (wish i new were the hell it was a saw this) anyone know wat needs to be done to get this to work..

im sure im not the only one that wants a intake mani which faces the front instead of this back across the engine making IC pipes 2 meters(exaduration) long... (also its a tight fit for rb20 in a s13)

ALSO to save people saying anything about the greddy plenums for rb25's... they dont fit rb20's

Cheers

Warrick

[riceline]

hey mate.

The test that you are talking about was in ZOOM.

They found that using the STD plenum was much better than swapping to the GTR plenum. After work ill see if i can find the issue and type some of it up.

[Wazz]

its not so much the fact that it lost power.. its the fact that.. i want piping to be straight out of intercooler into throttle body.. and turbo straight to fmic.. also its alot hard to change injectors and do random shit like that

[Sydneykid]

There are a number of threads on this subject, I suggest you do a search. So you want to be able to change injectors easily (how often do you do that?) and you don't mind looosing power EVERYWHERE and having poor idle control. If you had done a search you would have read about why this occurs. I have posted up pictures of the RB26 plenum and the necessary fabrication required to fit an RB20, a search will show you that. The search button is your friend.

PS; did I mention do a search?

[Wazz]

hmm loses power everywere poor idle? hmm didnt think it would be that bad... its a pitty greddy or someone doesnt have something like the rb25 one for a rb20...

also.. spark plugs.. blah blah blah to tired to really think of other shit that you have to move.. were as front facing plenum would simply make it half the work.. meh i think sleep time almost or something like that

[crack]

try this.

about halfway down the page. i enquired about this and was quoted $3500

for the lot

[RBCalais]

So RB25 intake manifolds don't bolt to RB20 heads?

[Wazz]

everyone i've asked about... has told me nope

[RBCalais]

Hopefully I'm not hi-jacking a thread here...

But I've been looking at purchasing an R32, which aparantly has an RB25 head and RB26 block. I won't mention the guys name as it is from this forum (people might be able to figure out which R32 or which guy it is, based upon this though).

He sent me a picture of the engine bay, and I was concerned about the amount of RB20 gear contained within (i.e. cam covers, timing belt cover, intake piping are all RB20 items and I can't see a VCT solenoid)

But it has does have an RB25 intake manifold. Anyone got any opinions on whether this would infact be an RB25 Head (probably a DE seeing as how its non-vct)

See attached pic:

[Sydneykid]

Hopefully I'm not hi-jacking a thread here...  

But I've been looking at purchasing an R32, which aparantly has an RB25 head and RB26 block.   I won't mention the guys name as it is from this forum (people might be able to figure out which R32 or which guy it is, based upon this though).

He sent me a picture of the engine bay, and I was concerned about the amount of RB20 gear contained within (i.e. cam covers, timing belt cover, intake piping are all RB20 items and I can't see a VCT solenoid)

But it has does have an RB25 intake manifold.   Anyone got any opinions on whether this would infact be an  RB25 Head (probably a DE seeing as how its non-vct)

See attached pic:

It may not be an RB25DE cylinder head, it is a simple unbolt job to remove the VVT solenoid and actuator. RB20 cam covers cetainly fit.