Clutch/flywheel Gurus, What does this indicate? Options

[Joseph Mills]

The flywheel pictured below has 5k miles on it along with a new pressure plate, clutch disc, throw out bearing, etc.

Clutch slips under full immediate throttle from a healthy four.

What are all the "spots" an indication of?

[Jake Raby]

It looks as if the disc center was interfering with the flywheel bolts...

Anyway, the off the shelf new flywheels are pretty shitty. I never trust their tolerance from the top to bottom surfaces. I do not see any signs of the disc having grease or oil on it but it has definately been slipping.. Maybe you had it slightly overadjusted. The tell tale signs of that are easy to spot on the surface that the release bearing rides on the pressure plate.. in 5K it should hardly be worn if it was not overadjusted.

The stock set up is good for 160 lb/ft of torque. With my mods to the flywheel I can push 170 through one with a stock disc. After that we can go up to 185 with my feramic disc with the stock pressure plate.. After that the stage II pressure plate is a must but can be used with a stock disc up to 225 lb/ft and thats almost enough to hold my 3 liter..

Also to all you guys changing flywheel seals:
ENSURE that you change the flywheel O Ring when doing the seal.. The O ring is the most likely source of failure and they are very non forgiving... The ones they give you with the gasket sets suck, I have had some made up that are the proper size, not .040 too big like the ones in the gasket sets...