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?

[Cap'n Krusty]

QUOTE (type47 @ May 8 2005, 04:11 PM)

anybody have info on Sachs pressure plates, that is, i found a source of a 215mm sachs pp for very low price and was wondering if they publish the clamping "force" for their products. the pp i found was on a vw bus site. an alternate to the "force" question is: is there a difference between a 914 pp and a 74-75 vw bus pp. (both 215mm) the clutch disk that they sell is a sachs and it has the 6 springs and the same disc is listed for the bus and the 914; same part number for both applications. can't find a pp for a bus on any other vendor sites and the source i found lists the disc as a 021.xxx.xxx number, not as a "I2010-xxxxx" listing number like everybody else. i'd like to save some $ on the 3 clutch parts.... CSOB, that's me......

Bus PPs look a lot different than the Porsche ones. The diaphragm is of a different design, and the release bearing is far different. The Porsche bearing doesn't mate up to the PP, and the VW bearing won't work on the 914 tranny. As I recall, the flywheel is cut differently, and the step height may be different. I know GPR sells the VW disc as a "low cost alternative", and I've used one in a "just make it run so I can sell it" situation. The savings isn't worth it, IMO. The Cap'n