Light weight flywheel?

[Teaguer]

No. They are just pressed on.
Tap it off carefully with a hammer as to not bend or deform it.
J.

Hitting the flywheel with a torch first will make taking the ring gear off a piece of cake .

[gearheadE30]

Good to know about the starter wiring, I have never heard about that before.

[2002maniac]

The M42 ring gear does not fit the M20 flywheel without modification. The M42 ring has a smaller ID than the M20 one. The flywheel has to be turned down for it to fit.

[JiXer]

The M42 ring gear does not fit the M20 flywheel without modification. The M42 ring has a smaller ID than the M20 one. The flywheel has to be turned down for it to fit.

Absolutely not true unless there are different m42 or different M20 flywheels.
I did the ring gear swap myself and it fit perfectly.

J.

[2002maniac]

Absolutely not true unless there are different m42 or different M20 flywheels.
I did the ring gear swap myself and it fit perfectly.

J.

So did I and it needed modification. Thus,

there are different m42 or different M20 flywheels.

[JiXer]

So did I and it needed modification. Thus,

I looked in to it a bit. Nobody else seems to have had that problem. There must have been something different with your set up?

J.

[kowalski]

http://m42club.com/forums/showthread.php?t=4968

looks like he's using that ebay settup.

[fiftytakedowns]

Hitting the flywheel with a torch first will make taking the ring gear off a piece of cake .

wouldnt that make the metal expand, and make the gear harder to come off?

[melloh]

AKA M40 flywheel. They show up on German and UK ebay every once in a while for dirt cheap.

Is this what you're talking about?

http://cgi.ebay.com/BMW-E30-E36-E34-316-318-CLUTCH-KIT-LUK-BNIB_W0QQitemZ300309520968QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item45ebd7a248&_trksid=p3286.m63.l1177&_trkparms=%7C293%3A1%7C294%3A50

[eu teo]

can you use the clutch out of the m42 witht the m20 flywheel?

[JiXer]

You can, but I wouldn't. I think it will bolt up just fine, but the M42 uses a 215mm clutch and the M20 is 228mm.
J.

[eu teo]

oh ok that makes sence..
so what are the exact parts that i need to put on my m42?
m20 flywheel, clutch, pressure plate, pinion gear for the starter,...... and what else? is that all?

[JiXer]

that and the new bearings.
But I would just swap the m42 ring gear on to the m20 flywheel.
That way you don't have to mess with your starter.

[fiftytakedowns]

There are some LW aluminum flywheels available for sub 400

I got a JB racing one. wieghs 9.5 lbs
I dont really have the opportunity to install it though.

[JiXer]

9.5 is REALLY light. It will rattle and idle rough with that light of a flywheel.