Replace clutch if installing lightweight flywheel?

[PGas32]

Originally Posted by maytag

You need to. The stock clutch won't play well with the aasco LWFW: no springs.
Get the sachs unit and be done.

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As in won’t function properly, or won’t last long? I have the LWFW with a stock clutch and it works fine in a race application

[Quadcammer]

Originally Posted by PGas32

As in won’t function properly, or won’t last long? I have the LWFW with a stock clutch and it works fine in a race application

the theory is that the stock clutch disk has no springs on it and when that is combined with an LWFW with no dampening, you transfer a lot of vibration back and forth between the tranny and the crankshaft.

For a race car, especially one with a tranny that is already a bit dubious on reliability, I wouldn't be too concerned that this will be any worse than a sprung clutch.

[BYprodriver]

Be sure to have it balanced before install, ideally with pressure plate.

[jmitro]

Originally Posted by Quadcammer

the theory is that the stock clutch disk has no springs on it and when that is combined with an LWFW with no dampening, you transfer a lot of vibration back and forth between the tranny and the crankshaft.

agreed. i would suppose as a racer you're rev matching pretty well so the shock to the driveline is reduced and maybe that would explain why you haven't had trouble.