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Neo Rb25det/s2 Rb25det Hybrid Issues

TurbostyleR

By TurbostyleR,
in Engines & Forced Induction

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TurbostyleR Collaborator

TurbostyleR

Posted
Posted

Hi,

Currently one of my mates had a Series 2 RB25DET motor in his car that melted 2 pistons so we have gone out and bought an RB25DET from an R34 GTST to replace it.

We only got the long motor and coil packs, so we swapped the S2 plenum and turbo onto the new motor (along with all the oil pressure switches) and got everything in the car again looking exactly the way it was, and we went to start it and there was no spark...

My mate runs a microtech and when we cranked it over it had no RPM signal which leads me to beleive that the R34 CAS and the R33 CAS are different and we need to re-wire that as you cant swap them over as the R33 CAS has a star that goes into the cam and the R34 has a half mooned that goes into the cam...

Also while doing this the neo coil packs somehow melted themselves (im assuming because the wiring between the R33 and R34 is different) so we are stuck on what do do with the coil packs as the R33 coil packs dont exactly fit the NEO motor...

Now my main questions are:

- What are the EXACT wiring differences between the R33 and R34 CAS in regards to pins?

- What are the EXACT wiring differences between the R33 and R34 coil pack arrangement? And if there is a way to use the R33 coil packs on a R34 motor what is it?

Any help will be GREATLY appreciated and thanks for reading a really long post!

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https://www.sau.com.au/forums/topic/104646-neo-rb25dets2-rb25det-hybrid-issues/
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caminperth Grand Master

caminperth

Posted
Posted

Further to the PM I sent you..

R33 CAS wiring:

x x x x

1 2 3 4

R34CAS wiring:

x x x x

4 3 2 1

Just reverse the CAS wiring and it'll work.

As for the coil packs I'm not 100% sure what's happened.

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