Does anyone have a sprung clutch with a LWFW installed?

[Cloudsurfer]

The throttle response from losing that much rotating mass off the motor is great, however, to avoid chatter and vibration and for the benefit/ safety of the driveline, you want a sprung clutch.

[rob76turbo]

I am thinking along similar lines, but does the spec line have a version for our cars that is s sprung clutch?

[violametallic-S-]

Should I be looking for a single mass LWFW or a dual mass? What is the difference?

[Cloudsurfer]

You won't find a lightweight dual mass. Single mass is just that: one piece of metal. A dual mass has two pieces that are held together with elastomeric material to allow some "give" to dampen driveline forces.

Spec does make a sprung clutch (they'll make pretty much whatever you want actually), and if you do go to a single mass flywheel, a sprung centered clutch is the only acceptable way to do it.

[JFP in PA]

You are missing one very important point: The dual mass flywheel acts as a vibration dampener for the engine; the sprung clutch acts as a dampener for the drive line………..taking away the dual mass dampening can result in problems as the largest vibration dampener on the engine is now missing.

[Cloudsurfer]

That is absolutely true. In my ideal world, I'd like a lightwight dual mass unit, but alas, I've never seen one produced for any application.

[JFP in PA]

Originally Posted by bmwm750

That is absolutely true. In my ideal world, I'd like a lightwight dual mass unit, but alas, I've never seen one produced for any application.

Which is why I totally agree with Jake on this one, and wouldn’t run one without internally balancing the M96 first………….these engines have enough issues without increasing their internal harmonics.