Do you know difference between manual-power brake master cylinders?
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: Do you know difference between manual-power brake master cylinders? (T-Top Tom 1)
Also the manual master cylinder has a deep indentation for the brake rod while the power master has a very shallow indentation for the rod. The manual might be an inch deep while the power is just a small dimple.
Burning Brakes
Joined: Nov 2000
Posts: 1,126
Likes: 145
Re: Do you know difference between manual-power brake master cylinders? (T-Top Tom 1)
Genunely stupit question, but which master cylinder will generate more braking force? The power brake cylinder or manual? Or does it make a difference?
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: Do you know difference between manual-power brake master cylinders? (Kevin Mason)
The manual with it's smaller piston will generate more line pressure for the same force applied to a manual peddle.
Melting Slicks
Joined: Dec 2000
Posts: 3,407
Likes: 2
From: Carmichael CA
Re: Do you know difference between manual-power brake master cylinders? (norvalwilhelm)
As usual Norval comes out with some good info. Allow me to elaborate.Pressure = Force / Area. So the smaller diameter piston will exert more pressure, but the larger diameter piston will push more fluid through the system with the same distance traveled by the pedal. If you are thinking about using the power brake m/c for a manual system, then let me discourage you...find a car that has power brakes, and disconnect and plug the vacuum line running to the booster. Be sure the car has a working emergency brake! Move the car at about 25mph and see if you can stop it with the pedal...then imagine driving through town and doing that about 10 times in 10 minutes while "keeping" pressure on the brake with your foot for like 2 minutes at a time. Unless you want a foot message every day then you may want to use the manual brake m/c for a manual system, or install a booster. Then again..it would be a good way to build up the muscles in you foot, though you may wind up a bit loppsided from that one leg having twice the muscle mass as the other one.
