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

[GTRNUR]

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

[Piggaz]

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.

[jas/slo32]

yes i ordered an r34gtr bare head from nissan to replace my overmachined 32gtr head all valves, cams, etc will swap straight over

[R32 Driver]

I thought the 34 had a different CAS design to the 32 and 33s?

[GTRNUR]

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 June 9, 2009 by GTRNUR

[s13_Skyline_inside]

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

[Beer Baron]

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.

[Adz2332]

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??

[r32-25t]

yes

[Adz2332]

yes

Simple, straight to the point! i like it

Thanks!!

[r32-25t]

Sometimes a simple answer saves confusion

[Adz2332]

Works for me.lol

Thanks!!

[r32-25t]

No worries mate