Originally posted by Madhatter
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Edit:
Found this on a bimmer forums e36 lsx swap. From what I can tell the e36 and e30 clutch masters are the same with the e36 being plastic and e30 metal
"The bore diameter of the stock e36 clutch master cylinder
.716" is the bore diameter
it puts it somewhere between the 5/16" & 3/4" aftermarket master cylinders.
it's 18.11mm.
I'm thinking i'm going to scale down to a 3/4" master cylinder because pedal effort on the 7/8" is too much. I suspect that as it is still larger than stock and not likely to flex compared to the stock plastic one and of course not old like my current one. Hoping that the ls7 clutch pairing will feel pretty good with that combo. the stock fbody clutch MC is 3/4" with 1" of travel - the wilwood unit has 1.12" of travel. I still need to research what the ls7 based vette's run for a MC as that would be the best one to mimic.
further data - looks like i'll be going with the 13/16" to have head room compared to the stock unit"
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