Posted by Paul (in NY) on Monday, March 05, 2007 at 22:33:15 :
In Reply to: Re: wagner master brake cylinder posted by achiem37 on Monday, March 05, 2007 at 22:06:17 :
I am not familar with that MC. I use a MC with a bore of 1 & 5/16" with hydroboost and disk brakes on my PW, WC53 and M37.
Size of the bore is not everything that must be considered. The larger the bore of the MC the more fluid is pumped when the pedal is steped on. The MC needs to be somewhat balanced with the wheel cylinders or Calipers in fluid displacement.
If you push a large amount of brake fluid when you push on the pedal, and the receiving
chamber on the brake end is small, your pedal will move very little and have full brakes.
Considering a normal well adjusted and functioning brake system with a pedal that goes way down for full brakes, a larger bore MC can correct this problem and give a higher pedal. There is no easy quick answer without understanding your entire system.
However, as an example; On my Bumblebee I started out with a 1&1/4" bore MC. My pedal went way down on application, very little reserve and I was at bottom of travel. Going to a 1 & 5/16" bore gave me a nice pedal with lots of reserve.
Paul