balancing clutch and flywheel
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Pro
Joined: Apr 2001
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From: Torrance CA
balancing clutch and flywheel
For those who have had a machine shop balance your clutch and flywheel, where were the weights installed? In the holes on the flywheel or on the pressure plate housing? This may sound like a stupid question but the machine shop that did mine welded some weight on one side of the clutch and grinded a little off the other side. Is this an acceptable method?
Last edited by hpcubed; Jan 6, 2006 at 06:56 PM.
Heel & Toe
Joined: Nov 2005
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The balance job on a stock rotating assembly '02 Z06 I'm involved with is just being completed. I don't know how yet how the flywheel and clutch came out but so far the procedure went like this:
o Equalize piston weights to 1/4 gram (they seemed to be from two batches or something, as most weighed either very close to 'X', or to X + 8 grams)
o Equalize big and little end weights of rods (didn't hear how close they were)
o Fit appropriate bob weights to rod journals and zero balance crank (again, no numbers yet)
o Install harmonic damper and zero balance crank/damper assembly by removing weight from damper. (Tilt! Bad runout and over 12 grams out of balance! Plan 'B': New ASP or ATI damper and carry on.)
o Next the flywheel will be bolted up and zero balanced and finally
o The pressure plate will be bolted up and again zero balanced.
This way, if any parts are changed later, they can be zero balanced alone, leaving the rotating assembly correct as a whole.
o Equalize piston weights to 1/4 gram (they seemed to be from two batches or something, as most weighed either very close to 'X', or to X + 8 grams)
o Equalize big and little end weights of rods (didn't hear how close they were)
o Fit appropriate bob weights to rod journals and zero balance crank (again, no numbers yet)
o Install harmonic damper and zero balance crank/damper assembly by removing weight from damper. (Tilt! Bad runout and over 12 grams out of balance! Plan 'B': New ASP or ATI damper and carry on.)
o Next the flywheel will be bolted up and zero balanced and finally
o The pressure plate will be bolted up and again zero balanced.
This way, if any parts are changed later, they can be zero balanced alone, leaving the rotating assembly correct as a whole.
