M20 flywheel on M52

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MarkT
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Post Mon Oct 11, 2010 10:00 pm

M20 flywheel binding problem. Is it just a little of the sump casting or elsewhere?

Thanks

Mark
E30 340i project in progress now 328 turbo
Breaking '97 728i Auto box, tubular manifolds and other morsels.
For sale E34 M50 sump, pick up and dip stick. PM for de
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blue30
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Post Tue Oct 12, 2010 9:30 am

Just a little off the fins and bits where the bolts sit, 5 mins with a grinder. You can see pretty easily when you offer it up.
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nickso
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Post Tue Oct 12, 2010 5:38 pm

i would be careful. some get away with very little to remove, mine looked like it was going to need far too much off. i did the fly instead.
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'88 e30 328i M52 track bint.
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MarkT
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Post Tue Oct 12, 2010 6:05 pm

Cheers guys
E30 340i project in progress now 328 turbo
Breaking '97 728i Auto box, tubular manifolds and other morsels.
For sale E34 M50 sump, pick up and dip stick. PM for de
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Dave_M3
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Post Tue Oct 12, 2010 8:59 pm

Do the flywheel instead and bring it down to 5.9kg or buy one already done from Hongkongfuey on here.
M42 rightness above 6500rpm, nobody can hear you scream
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rob0r
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Post Wed Oct 13, 2010 11:24 am

I'm pretty sure my E21 M20 flywheel didn't need any further clearance, it was a while ago now though. Also E21 flys are lighter I was lead to believe...
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Dave_M3
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Post Thu Oct 14, 2010 11:06 am

Yep, you need the E21 release bearing too.
Think the E21 fly is about 6kg
M42 rightness above 6500rpm, nobody can hear you scream
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MarkT
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Post Thu Oct 14, 2010 6:46 pm

Cheers guys. I ground off a little from the fins. Not so much that it would ruin the integrity of the sump bolt sockets but just enough so there were no witness marks. Should do the trick.
E30 340i project in progress now 328 turbo
Breaking '97 728i Auto box, tubular manifolds and other morsels.
For sale E34 M50 sump, pick up and dip stick. PM for de
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