[Tigers] MC bore

Robert Palmer rpalmerbob at roadrunner.com
Thu May 1 08:31:30 MDT 2008


That's a very plausible theory, although might it have broken with the
standard bores anyway. 

-----Original Message-----
From: Bob [mailto:bob at hermitagewood.com] 
Sent: Thursday, May 01, 2008 5:16 AM
To: tigers at autox.team.net
Cc: rpalmerbob at roadrunner.com
Subject: Re: [Tigers] MC bore


The bolt that broke was not the pressure plate to flywheel attaching 
bolts, but was instead a bolt on the pressure plate nearer the center.   
It retained the pivot for the 'fingers' that cause the plate to retract 
when the throwout bearing was extended.   A master cylinder that is too 
large will extend the clutch fork and throwout bearing too far, which 
can stress those bolts until one breaks (which it did in my case).   It 
was a nice high quality hayes pressure plate too, not a cheapie.    The 
larger bore master (because it moves the slave further per unit of 
stroke on the master) then has a higher pressure required by your foot, 
hence my suggestion to verify both cylinders if the pressure is unduly high.

--Bob
'66 Tiger 382000782


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