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At wits' end over this:
A '72 Mini of Spanish origin, cannot get a decent brake pedal. First depression on the pedal it goes nearly to the board and an immediate pump brings it to where it should be.
So far:
New master and all cylinders, booster replaced, any lines looking at all questionable replaced. Flex lines new. Proportioning valve for the rear has been made "empty" and is just a coupling.
Have installed new shoes and drums.
Pumped GALLONS of fluid thru the system, absolutely no air in there. Bled "traditionally" at first (two-man operation, build pressure with pedal, release & close bleed screws rear to front), then the Eeze-Bleed, and in frustration rigged an A/C vacuum pump to the booster and bled it again... no joy.
At one point we speculated it was that the shoes were not bedded and the problem was caused by excessive mechanical "space" to take up, so adjusted all corners to be mechanically ~just~ at the point of lock-up. Bled system and came out with the same results.
Completely flummoxed and extremely frustrated! Any insight will be appreciated.
A '72 Mini of Spanish origin, cannot get a decent brake pedal. First depression on the pedal it goes nearly to the board and an immediate pump brings it to where it should be.
So far:
New master and all cylinders, booster replaced, any lines looking at all questionable replaced. Flex lines new. Proportioning valve for the rear has been made "empty" and is just a coupling.
Have installed new shoes and drums.
Pumped GALLONS of fluid thru the system, absolutely no air in there. Bled "traditionally" at first (two-man operation, build pressure with pedal, release & close bleed screws rear to front), then the Eeze-Bleed, and in frustration rigged an A/C vacuum pump to the booster and bled it again... no joy.
At one point we speculated it was that the shoes were not bedded and the problem was caused by excessive mechanical "space" to take up, so adjusted all corners to be mechanically ~just~ at the point of lock-up. Bled system and came out with the same results.
Completely flummoxed and extremely frustrated! Any insight will be appreciated.