After multiple Powermaster failures I ordered a remanufactured booster (9" double diaphragm) and master cylinder for an '87 Monte Carlo through Rock Auto. I paired them with a brake pedal from a naturally aspirated '83ish Regal. The brakes were bled properly after install, but the braking power is pretty weak. The pedal feel is ok, if a little soft. Sitting at a stop I can feel that the pedal is pretty much all the way down, and if I lift just a little the car starts to move. The pads are good, and the engine is making about 16" of vacuum. I've read that if the booster is bad then you'll get a hard pedal (like I got when the PM took a dump), but that is not the case here. I've also read that a good pedal feel but weak braking can be caused by a mismatch between the booster pin and the master cylinder (not enough pin length, too much pin hole). I ordered the booster and the cylinder for the same car. Any ideas? Thanks in advance.
Tom
Tom
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