What is the correct master cylinder for manual disc

[matthon]

That's a big bore, expect to use a lotta muscles to stop relative to the smaller bore posted.

Takes little effort, stops on a dime. I prefer less pedal travel with the manual brakes.
Never felt the need to use 2 feet to stop, it's just not difficult.
I may have had the smaller bore before I recently replaced the master, not sure.

The only difference I noticed with the new master was less pedal travel and the brakes came on sooner, which I like.
Could have been just because my old master slowly stopped working well and it made the new one seem way better.
Bottom line, the pedal is not difficult by any means and the car stops incredibly well.

 

[Inertia]

Takes little effort, stops on a dime. I prefer less pedal travel with the manual brakes.
Never felt the need to use 2 feet to stop, it's just not difficult.
I may have had the smaller bore before I recently replaced the master, not sure.

The only difference I noticed with the new master was less pedal travel and the brakes came on sooner, which I like.
Could have been just because my old master slowly stopped working well and it made the new one seem way better.
Bottom line, the pedal is not difficult by any means and the car stops incredibly well.

The difference in pedal travel is <1/4 of an inch .
Good luck .

 

[lemondana]

I'm sorry to say-your master cylinder with 2 equal size chambers is not a disc brake mc. The disc chamber is always larger. A lot of these master cylinders got replaced early in their life. My 68 GTS that I bought in 75, already had the mc changed. And a lot of parts houses dispensed the wrong mc back then and still do.

I am going to assume that since your car is a 71, you are referring to the Kelsey-Hayes 4 piston setup your car should have. On my car I used a manual disc master that is correct in application for a 69 Dart. Included is a picture of it. The manual 4 piston master has 2 equal sized resevoirs, where the newer style single piston calipers need the larger resevoir as shown by greendart72. I'm not saying that you can't use that one, but according to the person who I get my brake stuff through, the correct unit for a Kelsey-Hayes manual disc is the one I have pictured. If you'd like, I'll pass you his number, he really knows old car brakes.His name is Craig Studnick, and his number is (516) 485-1935. He is a little unorthodox, but he really knows his brakes. Hope this helps, Geof

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