are the master cylinders the same bore and length from the later model dsm's, that people get there brake parts from?

what a very interesting question x camaro owner it appears that if the cylinder is different that it may take excess pressure on the brake pedal to stop the car and the pedal may go way down. also vice versa it could take very little pedal effort and the pedal won't go as far down

very important thing to look at when modifying brakes, which people also never take in to consideration

Do you always refer to yourself in the 3rd person?

just when people don't know the answer, you did a good job answering it

You should figure it out and let us know what you come up with.

hey i work at autozone and i checked this out like a week ago when i was pricing a big brake upgrade and autozone uses the same part # for a 97 gsx mastercylinder as a 91 gsx so you shold be good! good luck
Ryan

90s came with a 15/16" mc. AWDs later than that have all had a 1" mc from what I have seen. I am not sure of FWDs though as I don't work on them often.

Ding, ding, ding, ding....Winner!

There are TWO sizes, 15/16 and 1.00"

Both will work with larger BBKs but it may have an impact on the calipers you choose, the rotor diameter and the pedal feel.

i was just trying to say they used the same master cylinder for SOME single pistons and all the dual pistons. i did not know 90's were different though thats good to know are they interchangeable?
Ryan

Yes the bolt pattern is the same. I didn't know the 90s were different until I started running this car. I was one of the testers for Todd's 1G kits and the car I used them on was a 91 awd. When I put together this chasis I noticed the brakes pedal had more travel. If you have a 90 I highly recomend putting a later 1" mc in if you do the two piston caliper swap or any other caliper upgrade.

I checked out the Conicelli site and the 92 MC costs about 4 times more than say a 95 awd MC...no part #'s tho...to me that says they are different. I know for me, early 92 AWD with big brakes up front and SS lines all around there is a good 1.5" of "soft" pedal before it really gets firm. If or when the MC goes out I sure would like to get something to make the pedal firmer.

The '93 up AWD's have a different proportioning valve due to the larger front (dual piston) calipers. This change was to equalize the braking pressure front/rear. If you go with an upgrade BBK and have the old MC you will send too much pressure up front. Not a problem on most street cars but comes into play with a lot of brake pressure and turns. I put a '93 MC in my car when I went to dual piston calipers.

Ralli///Art GS said:

Do you always refer to yourself in the 3rd person?

Click to expand...

He sounds like Tarver... "Antonio Tarver is going to put an end to Roy Jones... because it is Antonio Tarver's time."

Acrually, the 2G had both MCs according to the spec sheet. But I doubt it's due to the twin piston caliper. The single piston and the twin are the same total area. I suspect it is due more to changes in the ABS or the rear.