I have a 46 1.5 ton Chevy. I have freshly turned drums, new shoes, reworked the wheel cylinders and added a new Power Brake Booster (vac line is attached to intake manifold). Custom bracket, but stock location under the driver side floor. I have two residual valves @ 10 psi each and a proportioning valve.
The stock manual master cylinder piston was
1 3/8" and the new master cylinder is 1 1/8".
There is only 1/8" clearance between the rod and master cylinder it pushes on. I have bench bled the master and bled the brakes several times after a drive, and no more air comes out.
HOWEVER, here's my problem, I do not have any pedal, it goes almost all the way to the floor before it grabs. But when it does, it grabs nicely, not spongy. And sitting on a hill, I can just barely have my foot on it and it holds, and does not leak down.
So, all is right, except the pedal distance.
My question: Would a 1 3/8 piston on the master cylinder fix the travel distance? Or would that make it 'hard' to press again??
