[6pack] Worn pressure plate as the cause of clutch judder ?

[Foster, Stan]

In 2006 as part of a gearbox project I replaced my clutch system with a new
one that included a Sachs pressure plate. About 400 miles after installation I
started experiencing clutch judder. This winter, at 800 miles since the new
clutch, I had reason to pull the engine and tranny so I got a look at the
clutch.

The clutch plate shows negligible signs of wear when compared to a new plate.
The pressure plate on the other hand has a significant step in it. I haven't
measured it but you can see it and feel it. It might be 1/32 of an inch. The
recessed area is shiny and has a wavy appearance.

My original B&B pressure plate which I still have is as flat as a pancake
despite the 10's of thousands of miles.

I was wondering how much a pressure plate could wear before the clutch would
start to slip, would an amount sufficient to create a noticeable indent in the
pressure plate be enough ?.

Stan