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Originally Posted by mark csl
NZ_M3
I have never had it on the downshift .
I have had 3 clutches and flywheels 1 in each of my 3 CSLs, and never
have they been worn out, the CSL i have now had done 52000 miles when it got replaced and it was like new, but there was burn marks on the flywheel (never a good sign )
The slave cylnder does not take up the small amount off wear on the clutch .
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Mark
when mine started doing it it was probably mostly due to the faulty release bearing (rather than a software issue) - hence the difference in when it did it (up or downshift, mostly downshifts, and on take off). When my clutch and pressure plate came out it was like new, zero wear (testiment to SMG I think) .. (car had 18,XXX km on the clock) ... no wear on the flywheel either (like new as well). Thank goodness for BMW warranty that covered the work (didn't look that hard to do though to be honest).
The clutch kit is made by LuK and features self adjusting pressure plate - i.e. it tries to keep a constant clutch travel (or in this case pressure plate take up point) as the clutch worn down. This combined with the dual mass flywheel means that there's a lot of interplay between the pressure plate adjusting, the flywheel adjusting the load ect ... causing the occasional sluring.
I do suspect that some of the slurring is caused by the release bearing issue though - when mine came out it was very inconsistently worn.