TKO 600 Grinding.

[eschaider]

Originally Posted by jhv48

Update:

All parts are out and the bellhousing was checked and found to be within specs, .0035. The input shaft shows no abnormal wear. Some dried grease was apparent on the pilot bushing. Not sure where that came from. No seal leaks. Mechanic coated the inside of the bushing with some motor oil when he installed the second one. The dried grease could be what was causing the input shaft to drag.

Mechanic is checking the end of the crank for tolerance and then putting the thing back together with a new pilot bushing and new Quiktime bellhousing.

Will test and then report.

Jim,

The last item that could do this is incomplete clutch release where the clearance when the clutch is fully released is insufficient to fully release the disc. Usually the problem is nothing more than a little drag on the disc and can be fixed by depressing the clutch fingers or diaphragm a little more.

I think Ekrupa2 was on to this version of the problem fix when he was talking about the difference in clutch release when the car is driven in stop and go traffic. If your hydraulic line is close to the exhaust system it would be to your advantage to relocate it to a cooler position/location.

Additionally if the clutch is barely disengaging when the car is cold after everything in the can warms up you could loose just enough clearance from heat expansion to drag on the disc. Easy fix is to adjust your mechanical linkage under the dash to provide slightly more stroke on the clutch master cylinder for a little more release in the can. If you are using a push type slave cylinder make sure you have sufficient travel left to do this without pushing the piston out of the slave cylinder bore.

If you are at the limits of your slave cylinder piston travel then position its attachment point on the throwout arm closer to the pivot ball so it requires less arm movement for the same throwout bearing movement. You may have to do a little experimentation before you get it the way you want/need it.

When you position the slave cylinder push point closer to the pivot ball you will decrease its leverage and this will give you a slightly zestier clutch "pedal feel". A diaphragm clutch will have slightly better street manners from a "pedal feel" perspective than a long style pressure plate.

Ed