> In reality, the only time a flywheel needs to be resurfaced is if the
> disk has worn down to the rivets and the flywheel is scored.  Even then
> the scoring can't be too deep or it is scrap.

I would beg to differ.  As a shop boy in a machine shop, I got the dirty job
of re-surfacing flywheels.  Even ones which didn't show any signs of warpage
or damage still had lots of hard spots in the mating surface due to people
driving while slipping the clutch, worn pressure plates, etc.  The hard
spots tend to "glaze" more and will affect the way the clutch disc slips on
the flywheel.  You can also hear the hard spots go by in the lathe, as they
make little "thunking" noises as they hit the cutting tool.  I never took
off much of the surface.  Just enough to get the hard spots out (like 1/16"
or so).  I do all my flywheels, because after all, when's the next time
you're going to be able to get at it?  Besides, whack a half inch off the
flywheel and you get better acceleration right?  *smirk*

YMMV
Keith Adams
Calgary, AB, CA
86 Westy "Roxy" / 87 Syncro project "Hugh"