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Thread: Touchy Brakes

  1. #1
    Join Date
    Feb 2018
    Posts
    18

    Default Touchy Brakes

    The easiest way for me to describe my brake pedal is that it's not progressive. 1st third is free play, 2nd third the brakes lightly engage, right when i get to last third the brakes grab hard. I have to gingerly press my brake to bring car to a stop. Car is a 1968 Camaro with a mild Cam.

    My set up:

    I have new 6 piston wilwoods up front. Stock drums in rear.

    3/16 lines

    MC ACdelco 18m794

    I have a wilwood prop valve

    9inch dual Master

    And a wilwood residual pres valve for rear 10lbs.

    I dont believe there's any air in lines. Any help would be appreciated

  2. #2
    Join Date
    Sep 2010
    Location
    Beach Park IL
    Posts
    2,339
    Country Flag: United States

    Default

    Booster to master pushrod clearance to large.

    Rear drums not adjusted properly.
    Donny

    Support your local hot rod shop!

  3. #3
    Join Date
    Feb 2018
    Posts
    18

    Default

    Thanks I will check both of those

    I have the rear drums adjusted so that I can turn the tire once if I spin it by hand. Should I back off on that.

  4. #4
    Join Date
    Sep 2010
    Location
    Beach Park IL
    Posts
    2,339
    Country Flag: United States

    Default

    It sounds like your drums are way out.



    When I adjust drums I remove both tires. I then remove one drum and adjust the other side, repeat for the opposite side. The idea being that we want to get as tight as we can with the adjustment. Even with new parts, the drums aren't usually round or the shoes are arced incorrectly and you will hear slight drag at maybe just one point. Keep going. When you start to feel the drag you are pretty much there.

    Again, if all new parts, you may have to repeat this process until the shoes wear to the correct shape.
    Donny

    Support your local hot rod shop!




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