A few years ago, I installed a 4-synchro, late-B trans in my '66 B. I have
no recollection as to whether the clutch lever arm was changed. It may well
have been. All was uneventful until last year after installing a heavy duty
Borg & Beck clutch to replace the standard unit that had somewhere around
30,000 miles of street & race driving. At 700 miles the roller throw out
bearing went. I replaced it with the old carbon one. At 3,000 miles the
clutch disc had 25% of one face fall apart (thankfully at idle in my
driveway). I had no h.d. parts, so reinstalled the old standard disc. Just
took it out with an additional 3,000 miles on it - none the worse for the
wear. However, the t.o. bearing was worn very much off center. About 3/4"
off center to be exact. Now, I installed a new bushing & bolt when
installing the h.d. parts. So there isn't much slop in the system.
What could be causing the off center t.o. bearing wear other than a too long
or too short arm?
Any experts out there???? Anyone know the differences between the early &
late throw out arms????
Norm Sippel
'66 MGB
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