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Herb
07-21-2007, 03:47 PM
I am gathering parts for my manual swap, and have read over Gale's site. The in write-up all the flywheels are for the m30 motor, can any of them be used with the 525i m50 motor and trans (250g from a '94 525i). I know that the s52 w/ 260g works with the eruo 323i flywheel and e30 m3 clutch assembly, but I am not sure of the fit of other flywheels for a m50 with m50-tranns.
Reason I ask is this, 323i euro fly. was $35 and weighed 13#, al. fly. for m50 is $400+, what can I say... I'm cheap.
Herbert

gale
07-21-2007, 04:32 PM
One of our local club members runs his own shop and put an e30 m20 flywheel in his e36 m50. Here's a post which recollects most of what I remember him saying about the swap:

http://www.bimmer.info/forum/showpost.php?p=256915&postcount=7

He did say it made a night & day difference getting rid of the dual-mass boat anchor flywheel and it picked up gobs of power on the lowend.

repenttokyo
07-21-2007, 04:45 PM
so the flywheels for the m50's suck?

gale
07-21-2007, 04:50 PM
so the flywheels for the m50's suck?

Pretty much -- I'm convinced I'll never own a dual-mass. The theory is great and they do dampen torsional harmonics of the drivetrain very well, as the boys in Bavaria intended, but at the expense of having alot of mass to spin up.

Herb
07-21-2007, 06:08 PM
Gale,
I wonder if he use the m50 transmission family, or the m20 tranny? I know how 260 will work, but I'm not sure how the e34 will respond to having the trany tilted an extra 10*.
Come to think of it I may have read that somewhere about the m20 flywheel on the e30 24v sites, hmm I think I'll try there for a while.
Thanks for the help,
Herbert