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R34 Vs R33 Rb26 Heads... What Are The Diferences?

GTRNUR

By GTRNUR,
in Engines & Forced Induction

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GTRNUR Grand Master

GTRNUR

Posted
Posted

Hi guys,

Im trying to source a cylinder head for the new engine I am building for my R34 GTR. I want to kee my current engine intact as a spare and build an entirely new engine and just do a swap when its ready.

So, apart from some porting, what exactly is the diferences between an R34 and R33/R32 RB26 head?

I believe the R34 exhaust camshaft is slightly diferent so it can drive the R34 CAS sensor.

I want to keep all R34 sensor compatability so I can run an FC on the new engine, so to do this can I buy an R32/R33 head and then just put a set of R34 cams in it?

Cheers,

Ian

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Piggaz Grand Master

Piggaz

Posted
Posted

My understanding is that there are no differences between any of them apart from the R34 exhaust cam, which can be changed over if need be.

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GTRNUR Grand Master

GTRNUR

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Posted (edited)

Well problem solved, I dont need to worry about R32/R33 heads now.

I'll be able to confirm the CAS drive diferences for sure in a week or so. Just sourced a low K R34 head from a vspec 2.

Cheers,

Ian

Edited by GTRNUR
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s13_Skyline_inside Proficient

s13_Skyline_inside

Posted
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dont know if the cam profiles are different, but guess if your building a new engine for it then you might go aftermarket cams, in that case the only difference is the drive, so just make sure you order sticks for an r34 gtr so the drive is the same, the bare head is the same

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Beer Baron Grand Master

Beer Baron

Posted
Posted

the bare heads are all the same. no difference in porting or anything else. the only difference is in ancillaries. and of course the 34 cam drive for the CAS is different. cam profile is a little different too, but lift is the same across them all.

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  • 5 years later...
Adz2332 Grand Master

Adz2332

Posted
Posted

Just to dig up and old thread....

Im looking at going the 26/30 route for my gtst and just starting to put parts aside....

Long story short, any of the 32, 33 or 34 gtr heads will be as good as each other??

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