I just got a 1999 Dodge Cummins in the shop with a clutch issue. I got it pulled out today and this truck has a single disc ceramic clutch. The clutch has completely eaten a deep groove approximately 1/16" to nearly a 1/8" in the pressure plate and about 0.010 groove in the flywheel. Surprising there was zero hotspots in either face. The friction plate was still in good shape but it completely ruined the pressure plate and flywheel will need to be turned. This truck is stock for the most part other than Edge Juice tuner. So for those of you considering ceramic clutch I wouldn't advise it. As this happens to be the second ceramic clutch that the previous owner installed and neither of them last very long well the friction disc did but even the previous ate the flywheel. 

Getting ready to pull a Valair ceramic/Kevlar out of my ride.  I will never run another ceramic clutch on anything.  Absolutely hated it.  Got about 70k on it, which doesn't improve my mood either.

 

Thanks for posting pics, and estimated wear depth.  That info confirms I'm buying a new flywheel for the next go around.  I'll post some pics when I get around to pulling it.

Ceramic clutches are only good for racing applications. 

 

This is why I will not suggest ceramic brakes or clutches on any vehicle.

Edited December 15, 20186 yr by Mopar1973Man