Torque Spec... nervious


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By Noob - 15 Years Ago
Installing the new Centerforce II clutch and in referencing the `57 Ford Shop Manual I'm surprised by the low torque spec (24ft-lbs?) for the pressure plate bolts... I would have thought at least 35-40 ft-lbs.

I used blue Loctite so maybe the low spec will be fine, but I'm still nervious. To what spec do you guys torque your pp bolts?

Brian

By charliemccraney - 15 Years Ago
That sounds about right.



I think I went with 20ft/lbs on mine but I'm using a mustang clutch with 8mm bolts.
By paul2748 - 15 Years Ago
The bolts are 5/16 and the torque specs for a 5/16 bolt is around 15-20. The 3/8 bolts in the intake are only around 25. I just did mine and used 16.
By Noob - 15 Years Ago
Thanks fellas for the affirmation... fastener sites I visited do indicate it's an appropriate torque spec for that type/grade/size bolt... for all the forces that go on at that particular interface, it just intuitively felt low.

Nuff said... moving on to next worry, like whether to buy the $17 wheel bearing that's made in china or the $37 on that is not necessarily not made in china... wth.

Brian

By Rono - 15 Years Ago
Noob;

Remember to remove the factory clutch spring from under the dash. You don't need it with the Centerforce clutch. It's got a very light pedal.

Rono

By DANIEL TINDER - 15 Years Ago
Rono,



Please elaborate. Might that also apply when merely replacing stock 3-finger pressure plate with diaphragm type? What happens if spring is retained?
By Rono - 15 Years Ago
Dan;

The Centerforce clutch and pressure plate system is unique in that it uses a spiral wire with weights on it that run across the pressure plate fingers. As RPM increases, the weights on the spiral wire press in on the release fingers. The installation instructions with the Centerforce set-up state that you should remove the clutch spring under the dash. If you are running a hydraulic clutch with a standard pressure plate, you should probably not remove the spring under the dash.

Rono

By charliemccraney - 15 Years Ago
You mean the spring which prevents the throwout bearing from riding against the clutch plate when in in gear and cruising?
By paul2748 - 15 Years Ago
Rono (1/29/2010)
Dan;



The Centerforce clutch and pressure plate system is unique in that it uses a spiral wire with weights on it that run across the pressure plate fingers. As RPM increases, the weights on the spiral wire press in on the release fingers. The installation instructions with the Centerforce set-up state that you should remove the clutch spring under the dash. If you are running a hydraulic clutch with a standard pressure plate, you should probably not remove the spring under the dash.



Rono




There was no such requirement in my centerforce clutch, but they did say make sure that it works ok. I'll reread the instructions. I had another centrifical clutch in prior to the centerforce and it seemed to be okay although I was having some problems with the old clutch. Maybe this was the problem?