quote:

---

Originally posted by Bill MacDonald:
I have installed one of those 1986 Mustang aluminum master cylinders in my friends 66 Mustang with drum brakes all around. I had to install a adjustable push rod to make it reach the inside piston. I had to make a pressure lid for the master cylinder to pressurize the system so I could bleed it. I tried bleeding this master cylinder on the bench and also with a person in the car pumping the brakes to no avail. Once pressurized I bled the rear to the front with no problem, making sure there was absolutely no air. I have now a good pedal but this is the problem-----my front wheels seem to want to pull more to the left under some hard braking and then go away momentarily and then come back with more pulling to the left. Depending on how hard I push on the pedal is how hard the steering wheel will be pulled from your hands. New wheel cylinders in the front, equalized brake shoes distance, no self-adjusters. Any suggestions????

---

Does the car have disc brakes now in the front or still drums? If it still drum all the way around then you have aproblem with the master cylinder having a check valve in it for disc brakes. This check valve holds the pads lightly against the rotors when pedal is released. Drum brakes need to retract slightly and can't do that with check valve in place. Also the pedal ratio and pressure difference for disc and drum differ alot, That is why disc brake section of the resovior is larger than the drum brake section. Disc brakes require more volume to activate. You maybe able to remove the check valve from the disc(front) portion but this may or may not solve your problem. You may also need an adjustable proportioning valve to compensate for the different volume in the master cylinder. Also you said "no self adjsuters" WHY?