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hey guys,

in the middle of wiring a 25 into a r32, can someone point out for me which wire exactly is the 'grey injector wire by the main engine bay plug'? Is this referring to the ecu plug, or something actually in the engine bay? Because I cant work out what you're on about lol!

Cheers man, great guide otherwise. Should be able to fire it up today if I get a wuick answer. Cheers

  • 2 months later...

Oh great read this is, ill be attacking this conversion shortly. ill be buying an series one rb25 minus coilpacks, turbo and loom. Is it possible to run an aftermarket ecu for eg microtech ltx12s and the standard rb20 ecu together?

I was told that the rb20 ecu and loom will run all the electrics air con and so forth and the microtech will run fuel ignition etc. If anyone could clear that up for me or anything that would be much appreciated!

Jase...

Awesome write up!

I wish I had this when i did mine!

Did you find that the car progressivly began to start harder and harder?

Im almost certain that the car starts too rich.

At first in a 1/4 of a crack it kicked alive.. but now it will crank for 4 or so full rotations before it kicks..

If so.. how did you overcome this?

Did you find that the car progressivly began to start harder and harder?

Im almost certain that the car starts too rich.

At first in a 1/4 of a crack it kicked alive.. but now it will crank for 4 or so full rotations before it kicks..

If so.. how did you overcome this?

Anyone guys?..

I just dont want to be causing damage to the eninge..

  • 2 weeks later...
  • 3 weeks later...

just had a RB25VCT/30 put in my 32gtst thought i might aswell post pics and point out that although i have heard of people using the RB25 inlet manifold we couldn t get it to fit under the (aftermarket)bonnet because the RB30 block sits around 40mm taller in the engine bay. So now my RB has a greddy manifold(RB20 throttle), which then necessitated moving the clutch master cylinder along the firewall closer to the brake booster. Also changed the gearbox to the 25 and changed the tailshaft. Trying now to get the RB20 ecu to run this setup with SAFCII(still considering ecu options), still alot of work to do however this should give an idea of how it fits in the 32 bay.

post-36266-1198243318_thumb.jpg

  • 3 weeks later...
Anyone guys?..

I just dont want to be causing damage to the eninge..

i would be looking at your cold start system. sometimes it takes a bit...might be your o2 sensor...at a guess.

just had a RB25VCT/30 put in my 32gtst thought i might aswell post pics and point out that although i have heard of people using the RB25 inlet manifold we couldn t get it to fit under the (aftermarket)bonnet because the RB30 block sits around 40mm taller in the engine bay. So now my RB has a greddy manifold(RB20 throttle), which then necessitated moving the clutch master cylinder along the firewall closer to the brake booster. Also changed the gearbox to the 25 and changed the tailshaft. Trying now to get the RB20 ecu to run this setup with SAFCII(still considering ecu options), still alot of work to do however this should give an idea of how it fits in the 32 bay.

looking good buddy, who made the plate to fit the standard throttle body to that plenum?? cause i dont want to get another throttle body lol. as for moving the clutch master i am getting a shortened one (clutch master that is). i am also running an rb25 loom and ecu and rb25 box, i only had to change the yoke on the tail shaft too, whoever says you need a whole new shaft is wrong..

Will put up pics when i am all done.

  • 2 months later...

i just had my conversion done. the only problem i hav, is the slight vibration on 1-2k rev... i had jus checked my tail shaft and its in perfect condition .

thus i was told that this vibration might be caused by the gearbox mounting, that's not aligned. Currently i only had 2 screws screwed to the mounting. Could this be the main reason my gearbox is vibrating?

Besides the tailshaft issue, any other known cause?

-oops, sorry for the spelling, im too used to typing over the mobile phone....

Edited by r32J3003
  • 2 weeks later...

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