So after doing more research and confussing myself even more I think I have a plan.
M54 engine, z3 gs6 37bz 6 speed gearbox and e36 325i automatic propshaft
Along with a manual conversion, does this set up sound like a good idea
Will my diff be ok for now ita a 1.8 auto
Engine, trans setup
Moderator: martauto
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flybynite
- E30 Zone Squatter

- Posts: 1696
- Joined: Sat Dec 02, 2017 11:00 pm
The gs637bz did not come with the Z3 it came with the Z4 and E46 330 facelift. It is what I am going to be using on mine. I am still not sure of the best propshaft.
The gearbox just needs a rear mount fabricating but be careful to get a gearbox from the petrol. The GS6 was also fitted to the Diesel and that has a different bolt pattern to the bellhousing.
It is not the easiest of swaps but a few have been done now and plenty on line and a couple of points here too
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Corasdad
- E30 Zone Regular

- Posts: 428
- Joined: Fri Jan 28, 2022 7:38 pm
Z3 was a type o
Thanks for info re diesel I didn't know that, why is it a tricky swap
Thanks for info re diesel I didn't know that, why is it a tricky swap
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flybynite
- E30 Zone Squatter

- Posts: 1696
- Joined: Sat Dec 02, 2017 11:00 pm
Mainly wiring, the MS43 is a bit more involved than the previous MS42 on the M52, the intake is bigger and more bulky with the DISA and the emissions gear is a bit more involved and a good thing to replace before you put the engine in the E30.
