>>Can some tell me what is the difference between the .70 and .75 bore size of
the master clutch cylinder?<<
Patrick,
The difference is .05" (sorry couldn't help it!)
You get more leverage at the foot pedal with smaller .70" bore - but your
foot travels farther to activate the brakes.
With the bigger .75" bore you push more fluid in master cylinder so get
quicker action - but it's harder to push the pedal.
The TR range went back and forth on the master cylinders as well as the rear
brake cylinders from .70" to .75" to get the right 'foot feel' and to balance
the front brakes and with the rears.
I think Moss catalogue suggests the current optimum bores.
Carl Sereda
'63 TR4 since '74 - CT22326L
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