Jump to content
SAU Community

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

GTRNUR

By GTRNUR,
in Engines & Forced Induction

 Share

Recommended Posts

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

GTRNUR Grand Master

GTRNUR

Posted
  • Author
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
s13_Skyline_inside Proficient

s13_Skyline_inside

Posted
Posted

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 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.

  • 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??

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      Boost cut after swap(RB25DET NEO) R34

      By GTSBoy · Posted

      Yes. You will need to get the original boost sensor and wire it in. That is.... if you plan to use a stock ECU - even a Nistuned ECU. The Nissan ECU will not operate correctly without it connected. And yes, it will do annoying stuff like you are experiencing. You will almost certainly be better off with some aftermarket ECU, than trying to hunt down rare sensors.
    • Kapr
      Boost cut after swap(RB25DET NEO) R34

      By Kapr · Posted

      Ok so ABS/TCS is "not" the problem. Yeah i know now about the ABS with Nistune(i told that to the Nistune guy) but iam not 100% why or why i dont have ABS. ABS cube is in the engine (always has been) but i had braked couple of times rly hard and brakes just locked and scream. Does all Skylines have ABS cube? That boost sensor https://www.sau.com.au/forums/topic/367633-wtb-r34-gtt-turbo-pressure-sensor-pics-inside/ Is this it? I need to ask but i have a picture of engine bay and i do not see that (100% is not in that place) If i do not have this the car can do what mine is?(cutting around 4000 rpm) Here is the pic of my engine bay(only one i have) BUT i think i dont have that cuz loom was used from my RB20DE NEO and i know (obviously) that it does not have boost control or any wire to that...) so maybe that is the problem? (i dont know for 100% if that car where the engine is from had that)...but i dont have the loom from that
    • MBS206
      S1 rb25/s14 starting problem

      By MBS206 · Posted

      I'm with you here. It's either loom has an issue, OR, injectors are not functioning properly. It could even be they're just constantly dribbling, hence the wet, but not firing.
    • Duncan
      S1 rb25/s14 starting problem

      By Duncan · Posted

      Depending on how long the car sat it is very possible for injectors to be stuck open or closed, I'd get them cleaned and flow tested. Other than that, obviously when the loom changes and the car doesn't start any more....the loom is suspect so some tracing / comparing may be required
    • 25zenki
      S1 rb25/s14 starting problem

      By 25zenki · Posted

      Harness is for a s1 Rb25det, and it is engine and lower harness.  the old harness had broken off plugs and was in very rough condition/exposed wires and splices etc. it is not able to be put back on the car, I could visually inspect to see if they had rewired any pins on the ecu plug. The fuel pump definitly isn’t turning off it’s an external pump and very loud you can hear it. Will look at the other harness tonight, am also going to pull the fuel rail and watch the injectors spray, will update here with what I find. Pretty sure at this point it has to be something to do with injectors because car will fire up on starting fluid and cas is clicking the Injectors. Fuel pressure is steady 43psi 
×
×
  • Create New...