Flywheel continued

[Hubmw77]

So the factory dual mass on a e34 m60 6 speed was a 265 mm. Does anyone think that running a jb 265mm lightweight on an m62 with the stock m60b40 6 speed clutch/pressure would cause for any concern?

[M3 euro ltw]

Cause for concern

TO bearing will be more expensive, clutch and disks less common, possibly more expensive as well.

but, if you're thinking of passing MORE power eventually than the stock engine, ie FI of turbo or SC type.... well, it might be a nice upgrade.

E39 M5 came with 400 hp and 400 lb torque and a 240 flywheel.

but.... scan the M5 forum, and see how well loved that choice was.....NOT.

The 265 was a limited run edition of flywheels, so parts are not as common. I think its a reasonable upgrade vs the V12 super-sized version, but everyone will have his or her own opinion.

Certainly no harm, but if you're staying stock power, can get by I think with lighter smaller set up. Your driving habits matter. If you're going to be doing a lot of zero-60 clutch drops, go big.

[Jonsku]

The size doesn't tell everything! There are plenty of clutch options available for 240mm disc that can withstand e.g. 750Nm, which should be quite a nice figure fro SC / TC V8..

I wouldn't go for 265mm (M60B40) or 280mm (M70) clutch, as they'll be expensive and part supply isn't so good..