Quote: The power brake m/c for a 75 Dart looks to be 15/16".
the manual one is 1 1/32".
Either your new m/c is flaky or you need to upsize it.
I owe you an apology! I just removed the M/C from the power booster that I previously had on the car. The bore WAS 15/16". To confirm, I pulled the M/C from a 73 Dart power disc car. It too was 15/16". I checked my NON power A body factory disc master and it looked like 1 1/16" but it could have been 1 1/32"... hard to tell when they are that close. This is odd. Maybe the increased pedal ratio of the manual setup overcomes the bigger bore?
