Author Topic: M20 Flywheel in E36 318i, which pilot bearing and clutch fork to use? (Read 4704 times)

JoeDellio · « **on:** August 04, 2009, 09:04:27 PM »

I bought an 88 325is flywheel and clutch, along with a 323 euro throw out bearing.
All the threads I see are for the E30 318i using this setup. I was wondering for the E36 if I use my stock pilot bearing, or if I use the pilot bearing that comes with the 325 clutch.
Also not sure if I can use my clutch fork, or an E30 clutch fork, I dont know if the E30 M42's and E36 M42's use the same tranny. THANKS.

Hodge · « **Reply #1 on:** August 04, 2009, 10:10:11 PM »

I have never heard of anybody using an M20 flywheel in an E36 318.

Interesting.

drivereight · « **Reply #2 on:** August 05, 2009, 07:19:56 AM »

hello,
the pilot bearing hold the input shaft of the tranny so you still keep your tranny, you keep your pilot bearing, as for the clutch it go with the flywheel and the pressure plate, just be sure you align everything first and be sure that the clutch spline fits your input shaft

have fun
DIY is the way to go

Denis

JoeDellio · « **Reply #3 on:** August 05, 2009, 03:29:45 PM »

Quote from: Hodge;76345

I have never heard of anybody using an M20 flywheel in an E36 318.

Interesting.

Will it not work? Everytime I ask in threads I never get answered.

Hodge · « **Reply #4 on:** August 05, 2009, 09:00:11 PM »

I am sure there is probably a way to get it to work, but that seems like more trial-and-error than should be applied when there are so many other options out there.

JoeDellio · « **Reply #5 on:** August 06, 2009, 04:06:57 PM »

Quote from: Hodge;76393

I am sure there is probably a way to get it to work, but that seems like more trial-and-error than should be applied when there are so many other options out there.

Ive read into it over the last day and found that it is common on E36's, just not 318i's like you said.

What I did find is that the M20 clutch fits the spline on the M50 tranny perfect, no surprise because its an I6.

Is this where the 318i tranny difference might screw me? I dont know anything about BMW trannies yet, so I dont know if the input shaft is the same on the M42 and the M50.

Hodge · « **Reply #6 on:** August 06, 2009, 08:28:07 PM »

Quote from: JoeDellio;76433

Ive read into it over the last day and found that it is common on E36's, just not 318i's like you said.

What I did find is that the M20 clutch fits the spline on the M50 tranny perfect, no surprise because its an I6.

Is this where the 318i tranny difference might screw me? I dont know anything about BMW trannies yet, so I dont know if the input shaft is the same on the M42 and the M50.

The tranny is the same on M250 and M42/M44 E36's. The Getrag 250G.

Input shaft might be the same as well...

JoeDellio · « **Reply #7 on:** August 06, 2009, 09:01:07 PM »

Input shaft looks to be the same from the M50 and M42 clutch disc pictures I pulled up, both are the 10 spline that "look" to be identical. I plan on just buying a 325 clutch kit, unless the E30 M3 clutch is THAT much better, but all in all I think an I6 clutch in the M42 should be sufficient.

Hodge · « **Reply #8 on:** August 07, 2009, 07:17:57 AM »

Quote from: JoeDellio;76456

Input shaft looks to be the same from the M50 and M42 clutch disc pictures I pulled up, both are the 10 spline that "look" to be identical. I plan on just buying a 325 clutch kit, unless the E30 M3 clutch is THAT much better, but all in all I think an I6 clutch in the M42 should be sufficient.

On a stock M42? Definitely.

romkasponka · « **Reply #9 on:** August 09, 2009, 04:24:02 AM »

Quote from: Hodge;76478

On a stock M42? Definitely.

I'm using E36 gearbox in E30 with m20 clutch and flywheel. You will need slave cilinder from E36 (my car is E30, so I think you have it alredy) and could be custom rod for that cilinder, but could be stock will be ok you will see how much you have to press clutch pedal. I'm using E30 slave cilinder with much longer rod (cut weld and so on). Clutch bearing is from m20. It's direct swap except starter, mine starter was custom adapted.

JoeDellio · « **Reply #10 on:** August 09, 2009, 06:02:32 PM »

Quote from: romkasponka;76573

I'm using E36 gearbox in E30 with m20 clutch and flywheel. You will need slave cilinder from E36 (my car is E30, so I think you have it alredy) and could be custom rod for that cilinder, but could be stock will be ok you will see how much you have to press clutch pedal. I'm using E30 slave cilinder with much longer rod (cut weld and so on). Clutch bearing is from m20. It's direct swap except starter, mine starter was custom adapted.

As far as the TOB, Im using the Euro 323 that is longer. Im also gonna measure my whole clutch assembly and TOB from the M42 and compare it to the M20. Im gonna use a 1mm washer under the pivot fork just for a little extra disengagement travel. If it still feels far out, then Ill just make an extended slave cylinder rod.

If you are using the E36 tranny and then maybe you had to lengthen your rod because of the M20 TOB? Or the combo of that and the E30 Slave?

romkasponka · « **Reply #11 on:** August 10, 2009, 05:21:54 AM »

Quote from: JoeDellio;76591

As far as the TOB, Im using the Euro 323 that is longer. Im also gonna measure my whole clutch assembly and TOB from the M42 and compare it to the M20. Im gonna use a 1mm washer under the pivot fork just for a little extra disengagement travel. If it still feels far out, then Ill just make an extended slave cylinder rod.

If you are using the E36 tranny and then maybe you had to lengthen your rod because of the M20 TOB? Or the combo of that and the E30 Slave?

It's more because of the E30 slave I think. All E30 slave cylinder body is outside of the gearbox as I remember, and E36 slave cylinder is half inside gearbox.

P.S. Fork and other things clutch things are from E36 gearbox...