MASTER CYLINDER

RedFish said
Again my memory is a hit and miss. Drum drum brakes have residual pressure valve or hold off valve ?, just inside the line port(s) of master cylinders heading a system that has dispersion block only / no proportioning valve downstream.
You could just take for granted the aftermarket got it right and it will work fine.
If the master cylinder produces pressure you can stop. Stopping distance, pedal travel, operator effort, are the real issues. With luck it'll brake better than ever.
Click to expand...
Paragraph one has unusual terminology, but seems, essentially, correct.
Paragraph two, however,makes too many assumptions to be totally true.
A), the pressure has to end up in the wheel cylinders. B) the pressure has to activate the shoes, C) the shoes have to rub against the drums , and D)The drums have to shed the heat so generated.
Just swapping M/Cs by itself will produce no change in the system unless the old M/C had problems that the new M/C solves.