[DeTomaso] New Clutch Issues

[JDeRyke at aol.com]

In a message dated 4/5/10 8:54:59 PM, seanmundy at hotmail.com writes:

It has 3 springs.  Not sure what type they are.....

OK- so its a sprung disc. Dunno- maybe the disc didn't like the new surface 
finish of the flywheel. If so, continued driving will smooth any slight 
roughness or fill in any small depressions. Stock iron flywheels get 
heat-treated in use, which can make extremely hard 'hot-spots' within the mass of the 
flywheel. If the guy doing the sufacing isn't paying attention, the grinding 
wheel will plane over the hard spots, polishing or burnishing them but not 
cutting the surface at those points, or cutting more on one side than 
another causing a degree of tilt. Such a flywheel will then cause chatter. A 
leaking rear main seal or ZF front seal can deposit a few drops of oil on the 
disc which is like a blotter as far as any fluid contamination. Extremely dirty 
hands can do it. Again, the heat of use often boils off the contaminates 
over time- if you can stand the chatter that long! 
Back when I was dirt-poor, I took contaminated clutch discs and brake pads, 
and stuck them in a basin of carbon-tetrachloride for a few minutes, then 
drip-dried them in the sun for a day. Those solvent-cleaned parts 
subsequently worked just fine. Note this last "is for entertainment purposes only. No 
recommendations are made etc, blah blah..." And depending on your place of 
residence, it may be impossible to get good chlorinated hydrocarbons for any 
sort of cleaning. There are other chatter causes, too. Good luck- J DeRyke