brake swap problem
04-11-2009, 04:49 PM
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SHOW GUEST
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Join Date: Apr 2007
Posts: 6
brake swap problem
I changed from power brakes to manual. My new master cylinder is from wilwood. I bench bled, installed, bled brakes and I cruised down my road, braking and when I turned around all 4 disc brakes locked up. I bleed a caliper and it rolls fine. The pressure is released until i do it all over again. I have tried 2 master cyclinders? The pedal is coming all the way back and rod length should be fine.
04-11-2009, 05:06 PM
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RACING JUNKIE
Join Date: Sep 2007
Posts: 4,137
Are they wilwood calipers? If so they have to be centered up perfectly(or real close) since they do not float. You don't by chance have residual valves installed in there do you?
04-11-2009, 05:35 PM
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no residual valves.. calipers are factory disk. back rears are wilwood. calipers were run before and they didnt hang up?
04-12-2009, 10:08 AM
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DYNO OPERATOR
Join Date: Aug 2005
Location: Rifle Colorado
Posts: 585
Sounds to me like the m/c pushrod is too long and not allowing fluid to return. Make sure that there is a little end play in the pushrod when fully released.......
04-12-2009, 04:44 PM
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push rod comes back all the way. It has 3/8 to 1/4 play.
04-12-2009, 05:50 PM
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MASTER JOURNEYMAN
Join Date: Apr 2009
Location: Florida
Posts: 38
brakes
Just a thought, maybe the original master cylinder had a vented cap on the master cylinder, and the wilwood master is one without a vented cap.When you apply the brake the pressure keeps building up in the master cylinder, keeping the brakes applied. I would call Wilwood and explain the situation and they will tell you exactly what is wrong, they deall with it every day. There number is 805-388-1188, hope this helps.
04-12-2009, 06:15 PM
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RACING JUNKIE
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