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View Full Version : Manual to auto master cylinder upgrade


internetaardvark
07-13-2006, 08:13 PM
I read a while back that the mc from an automatic s14 has a slightly larger piston diameter than the manual one does, so I figure it'll add a little more feed back and a stiffer pedal. But I have no Idea if there are any other differences between the two of them. I don't know if there will be any modifications needed or if the auto mc will just bolt right in to my manual s14. If anyone can answer these questions it would be appreciated, as my mc is on it's way out and I need to do something about it soon.

Jung918
07-14-2006, 01:27 AM
You can always pull the master cylinder out and turn the piston on the booster a little bit.

orion::S14
07-14-2006, 07:17 AM
Stock S13 and S14 5-speed BMC is 7/8" bore.

Auto and ABS is 15/16" bore.

Z32 is 1" or 17/16" bore.

I like the 15/16" BMC with Z32 brakes on all 4 corners...very solid, not too touchy.

- Brian

cosmoworks
07-14-2006, 10:09 AM
will just bolt right in to my manual s14.

The auto S14 mc will bolt right onto your S14.

-Cosmo

Jung918
07-15-2006, 11:09 PM
Did all the s13 autos come with abs?

aznpoopy
07-16-2006, 01:00 AM
i have an auto 15/16 with stock brakes

its fine for daily, no problems

projectRDM
07-16-2006, 10:32 AM
Did all the s13 autos come with abs?


Hell did that come from? No. Not even close.