Steven, can you PM who you talked to at QM. I need to contact him. Mine is spinning with the clutch.

 

This was on the bottom of the last page. This should answer some questions.

***UPDATE***

After lots of measuring and discussing with other members, it appears that the Manley crank is fine. The measurements seem to be right on with the stock crank.

Some of you may have already noticed, but the measurement calculations included with the QM clutch were backwards. The instructions say to measure the clutch from the block (actually the transmission spacer plate) to the fingers, then subtract the release bearing depth. This is backwards! You need to measure the release bearing depth, then subtract the clutch measurements.

Even still, my original bearing was touching the clutch fingers without using any shims. Quarter Master sent me a new bearing (my original one was machined down too much) and now my clearance looks to be perfect. I even had to add a small shim (1/32" black shim) to set my initial clearance at .156. My transmission is back in the car and I can visually see clearance from the clutch fingers. I am waiting on a radiator and a base map to get my car running again. Hopefully, I will be able to confirm that everything is normal in a couple weeks!

 

so if the Manley is fine,which crank is the one with the fitment problems?

 

As of right now, I don't know what changes have been made by QM. Someone above mentioned that QM is machining the center sleeve a little more. I wish I had dIone more testing prior to sending the clutch originally. My original bearing was machined in the wrong section, then I was sent a new one. I now believe that this isn't a crankshaft issue!

 

Soo anymore input on this problem? I'm looking to get a QM 8 leg but I'm rebuilding the motor and don't want to touching nothing again once I'm done. Everyone that has these problems is only with the older style clutch or it is with the new style also? Any update What IS the problem thats killing all these thrust bearings?

 

When I spoke to Jeff he said the bearing will be touching the fingers since thats what will push the bearing back. So yes the fingers of the pressure plate will be touching the bearing. Regarding the thrust bearing IMO, the overextension of the TOB can put enormous pressures in the crankshaft hence wearing those out. So a clutch stop is a most. My $0.02

 

So it's ok for the bearing to ride against the fingures I just want to make sure before I out my car back together

 

i think it's the Eagle

 

But for the people that had motors trashed with this clutch what is the culprit? Too much pressure on the fingers from not enough clearance? as in an issue with QM or with the certain engine parts they have?

 

This was QM response to the fingers touching the bearing...
"the bearing on the evo doesn’t have a return spring so only the spring pressure of the clutch and the hydraulic pressure will create the clearance between the bearing and the fingers so the bearing may drag a little. "

 

not installing to specified clearances.

 

I said this at the a long time ago and no one listened.

 

Its been said on numerous threads a clutch stop isn't needed because of the HRB.

I swear this site is a blessing and a curse

 

I agree but what do you do when you install it with no shims and you NEED clearance?....that would suck if you need to send out a tob to get clearanced. I don't see many other options that can be done easily to fix this issue and with my luck I will have this issue

 

Does this problem occur if using the 6 leg quarter master on a stroker motor?