Engine Swap

[GODZ1LA]

ok peep i have read and taken in whats said on this sight

my issue is

i have access to a r34 n1 (vspec) engine and all associated elecs from a front cut

i want to put it into my r32 gtr and restore it back to a streetable package

i know there are a few wiring cam and cas differences

however i was wondering can i use the r34 loom and ecu ect in the 32 without to much trouble?

what would be invoved / any wiring mods? ect

i will be using the 32 box and clutch

[R31Nismoid]

If you use 34 ECU/loom you wont have a problem

you also need to use R34 ignition setup however. Wont work otherwise

[GODZ1LA]

r34 ignition set up as in key barrel ect

ir

as in coils ect ect

[R31Nismoid]

Engine bay mate. Coils/wiring to ECU, CAS etc.

R34 GTR setup is not the same.

[GODZ1LA]

any relevant attached posts / links would be greatfull

[GODZ1LA]

yeah i got from the dash forward

[R31Nismoid]

any relevant attached posts / links would be greatfull

Links for what mate?

You simply use the entire R34 GTR ignition system. coil/CAS to loom to ECU.

If you need further information above that then your going to struggle to do a conversion at all!

Pull it out of one, put it into the other. you have a front cut so it's all there!

[femno]

Ash are you forgetting that the ECU loom plugs into the body loom as well?

Ive no experience on this directly but im assuming that the 34 ECU loom wouldnt plug into the 32 body loom.

In GTS/t, the 32, 33, 34 these plugs are all different.

You would be better off using a 32 CAS, sensors and Ignition systems with the 32 ECU loom dude.

[R31Nismoid]

Unless I'm recalling this very badly from when i did mine...

the loom goes from ECU plug to where you plug in the coil pack loom. My one from Nissan came as one complete part. The body loom should be plug and play as the GTR loom was almost perfectly plug/play into my HR31.

So assumption is GTR to GTR would be identical?

I'm only saying what i am as he wants to use 34ecu and loom, so its literally a swap in/swap out job. take a couple hours at best.

[Beer Baron]

i would use your R32 ignition setup (coils, ignitor and harness). use your 32 ecu and harness. Keep the R34 cas (as 32 cas won't match the 34 drive on the cam snout) but you need to swap 2 wires around to get it working with the 32 ecu. simple as that.

other than that there are a few little differences. top radiator pipe on the engine is different. bolt your 32 one onto the 34 engine. that's about it off the top of my head.

much easier this way.

oh, put your R32 sump onto the 34 engine too. otherwise you will have one major problem. the 34 front gearing is massively different to the R32, so if you use the 34 diff and sump you'll end up with different ratios front and rear. with both engines out of the car it's easier to just swap sumps rather that set up the old 32 diff into the 34 housing. and there is no advantage in using the 34 sump over your 32 one. same goes for the diff centre, they are both open diffs, just with different crown wheel to pinion ratios.

[JonnoHR31]

The body loom should be plug and play as the GTR loom was almost perfectly plug/play into my HR31.

definately not true. the hr31 body plug is massively different to later skylines. your confusing it for something else, or your car was already modified. afaik every model has a different plug to suit its own electric package

Edited January 12, 2011 by JonnoHR31

[KiwiRS4T]

i would use your R32 ignition setup (coils, ignitor and harness). use your 32 ecu and harness. Keep the R34 cas (as 32 cas won't match the 34 drive on the cam snout) but you need to swap 2 wires around to get it working with the 32 ecu. simple as that.

other than that there are a few little differences. top radiator pipe on the engine is different. bolt your 32 one onto the 34 engine. that's about it off the top of my head.

much easier this way.

oh, put your R32 sump onto the 34 engine too. otherwise you will have one major problem. the 34 front gearing is massively different to the R32, so if you use the 34 diff and sump you'll end up with different ratios front and rear. with both engines out of the car it's easier to just swap sumps rather that set up the old 32 diff into the 34 housing. and there is no advantage in using the 34 sump over your 32 one. same goes for the diff centre, they are both open diffs, just with different crown wheel to pinion ratios.

R32 GTR 4.1:1 R34 3.545:1

[Duncan]

yeah the connection between the body loom and engine loom is different between 32 and 33. I assume 34 is different again. But I'm sure it can be sorted.