- S52 vs M52 flywheels
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S52 vs M52 flywheels
They are quite different, even though they WILL interchange between engines. Not sure what is different about the clutches, maybe stack height. Anyway ... PICS !!!!!!!!!!!!!
Last edited by snaponbob; 01-04-2014 at 07:21 PM.
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1996 332IS
Built 3.2
CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
Technique Tuning 80# tune.
1/4 mile 10.84 @ 136.72
Your 1 and only stop for all your BMW performance needs
WWW.CESMOTORSPORT.COM
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But SOME did NOT.
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Idk why, but I have a feeling that this is why guys with stock flywheels and clutches with e36 Ms complain of resistance when they put the trans into 1st, but 328 owners do not. I figure there are a few differences beyond friction plate.
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So, after posting the pictures and before installing the ZF in a 96 M3, I took a good look at the 328 and M3 pressure plates. I had to get the box in the car, so only took a quick look at them laying on my work bench. I think the M3 unit is "thicker", and that would make sense after seeing how the two flywheels are built. It may be a stack height thing. Anyway, I will never mix/match ANY of the parts (even though the clutch plates look and measure the same.
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How are the weight differences between the two?
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Did not weigh them. A friend was with me at the time. After I picked up both of them (one is each hand) I noticed the difference in weight. I said nothing to him except to take them from me. "Holy crap!!!!" was the response. There really is a great deal less metal on the M3 flywheel, and it is taken away from where it really counts - the perimeter. I am guessing at LEAST 3-4 lbs. While it may not be apparent when you just drive around a 328 with an M3 flywheel/clutch retrofit, it would matter on a drag strip or race course as the flywheel would certainly take less power to spin up. PHYSICS !!!!!!!!!
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