318iS gearbox parts

[MrT8064]

I am in the process of gathering parts to carry out an M52 conversion on my 318iS.

I've had a good read through the main conversion wiki, but am still unsure which gear selector parts need to be replaced, and with exactly what? (future set up will be M52B28 > M20 Clutch/flywheel > 318iS gearbox > standard driveshaft > standard open diff (for now).

I am also planning to carry out the Z3 quick shift conversion at the same time.

Many thanks for any answers!

[AndyZippy]

Hey dude, same set up as mine..
You will need a 325i Propshaft, as your iS one will not fit. You need the gear selector mech from a 320i. I did the Z3 shortshift too - Totally worth it!

[MrT8064]

Sweet! And so the parts list goes on...

Going for the quick rack too which should be good fun!

[AndyZippy]

Definately - E36 on mine, makes a big difference. I believe E46 quicker again.. Good luck!

[MrT8064]

Yeah the difference between 4 and 3 turns doesn't sound a lot, but everyone says its amazing. Cheers!

[rich318i]

Definately - E36 on mine, makes a big difference. I believe E46 quicker again.. Good luck!

E36 rack is sweet as.. Massive upgrade from the E30 rack.

E46 not much between them really i thought

[jimbom30cab]

yer i agree with Rich, I didn't notice much between them to be honest.

[davelarge]

I'm also in the process of collecting parts for this swap, using the same gearbox and clutch setup as the OP.

Can someone explain why you need to use the 325 prop and 320 mech? Can't get my head round why you need to when you are keeping the original box.

[MrT8064]

My bits have arrived now.

I've not compared the drive shaft, but the m20 gear selector is a bit shorter.

I think the engine (therefore gearbox as well) sit a little further back in the car.

[davelarge]

Yeh I thought that but then wouldn't you have to meas about with the gearbox mounts?

[MrT8064]

Haha I've not actually thought about this either

[Brianmoooore]

Yeh I thought that but then wouldn't you have to meas about with the gearbox mounts?

Gearbox mount fixing points are adjustable over several inches, to accommodate auto/manual gearbox for all available E30 engines.

[Brianmoooore]

Yeh I thought that but then wouldn't you have to meas about with the gearbox mounts?

Gearbox mount fixing points are adjustable over several inches, to accommodate auto/manual gearbox for all available E30 engines.