I am putting my 904 front clutch back together....only change is a multi spring unit for the front clutch, and a fresh set of Alto .083 friction and Kolene steels.
With the thinnest snapring (.065) and 4 disks in a 4 disk drum, i have a total of .030 clearance. The recipes listed in Tom Hands book all vary from .012-.022 per friction...so .048 to .088.
I am 100% positive the piston seal is seated properly.
Any ideas? The old frictions were completely smoked...no clue what was in it.
Plan B involves swapping to four .063 disks with an extra steel tossed in to make up the difference.
Thanks.
P.s.The rear clutch sits perfect at .029 with the .063 Altos and Kolenes.
