I just installed a Valair Single disk full ceramic clutch. Im experiencing alot of clutch chatter when in low rpms and when at idle with the clutch disengaged. Anyone know what the deal could be?
03 Cummins 3500. Predator & power puck stacked, Johnson intake, 4 inch straight, Wicked diesels stage II injection pump

 

mine does the same with single steel flywheel.. but its done it both clutch jobs.. i dont pay attention to it anymore.. just the dualmass is there to dampen the rattle and if you replaced it with single solid.. that might be your issue..

 

Is it a rigid disc or a sprung hub? If its a rigid disc they chatter more than a sprung hub disc