Clutch disc with no balance marking
#16
Former Sponsor
None of the latest production clutch discs (that I've seen) have the balance marks.
#18
Administrator - "Tyson"
Lifetime Rennlist
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Lifetime Rennlist
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You have to wonder how many of these cars have spent time running around like this adding to the mystique that these clutches are difficult to adjust / keep adjusted.
#19
Rennlist Member
Exactly ... there are so many iterations of discs, intermediate plates, stub shafts, and flywheels, that I'm sure there are many cars with subtle mismatch of components ... not sufficient to stop clutches operating totally, but enough to reinforce the notion that you need to be a witch doctor, or own a magic wand, to get them working properly.
#20
Former Sponsor
BTW....I make a replacement clutch shaft out of 300M, for $395.00, which is a considerable savings over the stock shaft.
#21
Former Sponsor
Additionally, the lack of lubricant (and resulting rust) wears the clutch shaft badly. If there is any ridge on the splines on the short shaft....the hubs can get caught on this ridge and not allow the clutch to release. Replace the short shaft if this is the case.
Porsche uses their high pressure Optimoly HT (000 043 024 00) in the clutch area extensively. Not only is it recommended for the clutch disc hubs and splines on the clutch shaft, but they use it between the T/O bearing thrust ring and the pressure plate, as well as on the preload spring for the T/O bearing. Most clutches I see have no lubricant anywhere and the resulting wear is terrible. The T/O bearing pressure ring will wear halfway (or more) through the fingers of the pressure plate or tear off the locating pin and spin on the T/O bearing without this lubricant.
Buy a tube....it has many other issues....and will ensure many trouble free miles of use on these clutches.
Last edited by GregBBRD; 05-11-2015 at 05:31 PM.
#23
Former Sponsor
#24
Rennlist Member
#26
Former Sponsor
Clearly, the OP has what I'd think to be a later production disc with a balance mark....so obviously what I thought isn't true.
Now I have absolutely no idea of what they are doing.....