I have a53 Chevy Bel Air that I put a Turbo on. Had to move the Master Cylinder from the firewall back under the floorboard. Had good brakes when MC was on the firewall. The front end is a Jaguar with dice brakes and the rear are drum brakes. The MC has a 1 in. bore Corvette. It has a proportioning valve and 10-pound residual valve on the rear and a 2-pound RPV on the front. It has a 7 in. vacuum booster, vacuum pump and a vacuum canister reservoir. It is pulling 22 in. of vacuum at the brake booster. The rod between the booster and the MC is apparently 3/16 of in. of play. The brakes have been bled and brakes adjusted several times.
Now the problem; hard brake pedal. I replaced MC, proportioning valve and brake booster to no avail. Had it to a brake shop and $301 later it's no better. Does anyone have any suggestions?.
