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R34 Motor In An R32 Gt-r - Couple Of Questions.

GSX-R35

By GSX-R35,
in R Series (R30, R31, R32, R33, R34)

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GSX-R35 Community Regular

GSX-R35

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Hello everyone. My friend's shop is getting ready to pull the old broken RB26 from my R32 and swap in a new Nismo RB26. Now, the RB I got is R34-spec rather than R32 spec so I know some changes will need to be made. We already know about swapping the front diff but had a couple of other questions I was hoping someone could help with.

1) What's needed to make the harness compatible with the R34 cam angle sensor? I have a new R34 CAS already but I was wondering if the plug on the car just needs a repin or a new plug needs to be wired in.

2) I'll probably be getting an Apexi Power FC to handle the ECU side. Do I assume correctly I need to get the R34 PowerFC and not the R32 version? I haven't dealt with an aftermarket ECU system before on a car (just reflashes) so does the R32 ECU stay with the car or can it be disconnected and binned if I use a PowerFC? Any suggestions on other ECU setups to consider as an alternative?

Thanks in advance for your replies.

GSX-R35 Community Regular

GSX-R35

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I already read that post before and unfortunately it didn't answer the specific questions I posted. It mentions a "wiring mod" to fit the R34 CAS but doesn't describe what that mod is. It also mentions you need either an R34 ECU or a PowerFC but it doesn't say whether you need to keep the original R32 ECU wired in if you run a PowerFC.

Dahtone Racing Grand Master

Dahtone Racing

Posted
Posted

You need to reverse the pins, so basically swap 1 with 4 and 2 with 3.

As for the PFC just use which ever one matches your loom so I would assume you are running a 32 GTR engine loom.
Also run you R32 coils and ignitor to save rewiring the coil loom.

GSX-R35 Community Regular

GSX-R35

Posted
  • Author
Posted

You need to reverse the pins, so basically swap 1 with 4 and 2 with 3.

As for the PFC just use which ever one matches your loom so I would assume you are running a 32 GTR engine loom.

Also run you R32 coils and ignitor to save rewiring the coil loom.

Thanks for confirming that just a repin is needed for the CAS. Makes sense I would need a 32 PFC with my 32 harness - I wasn't sure if the motor dictated the choice but in retrospect I should have thought the ECU and harness would matter more.

As for the ignitor mine was shot so we ended up binning it already and converting to an R34 setup anyway so that should all be good. Thanks for the help!

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