Brake rotors and pads worn bad

Discussion in 'PSI Superchargers Tech Questions' started by outlaw3621, Sep 30, 2014.

  1. outlaw3621

    outlaw3621 New Member

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    I have recently changed transmission from a crowerglide clutch with 3 speed lenco to a converter drive and 2 speed lenco in a Promod style 41 Willys, 515CI blown BBC.
    Since day one it has been very difficult to hold on the brake especially when reversing back from the burnout.
    To date I have only done mostly half track testing (6-8 runs) and I have had to replace three sets of pads and now the rotors are badly worn and have to be replaced. there are Willwood #160-1601 (11.44 x .35 steel rotors) with Willwood 4 piston Dynalite calipers with Polymatrix B pads on the rear. 7/8" tandem master cylinder. In addition there are Strange ultra struts with the single piston brakes on the front. I have also checked and made sure there are no blockages etc. that may be making the brakes drag on.

    I have a combination foot brake and hand brake that makes it possible to pull the car up.

    Any help on why the brakes are worn out would be appreciated.

    Outlaw3621
     
    #1
    outlaw3621, Sep 30, 2014
  2. jay70cuda

    jay70cuda Well-Known Member

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    Go buy a brake psi gauge. It will help answer most if not all of your questions.
     
    #2
    jay70cuda, Sep 30, 2014
  3. Mike Canter

    Mike Canter Top Dragster
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    I agree with the pressure gauge. Maybe you have residual valves holding the brakes on or the have no slack in the masterbrake cylinder rod that is not allowing them to release. All should be checked. What rpm does the car idle at especially when backing up?
     
    #3
    Mike Canter, Sep 30, 2014
  4. turbo69camaro

    turbo69camaro Member

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    7/8 is small for a 4 caliper door car most run 1 1/16 We had good luck with the gator pads when i ran willwood brakes they were more abrasive on the rotor rather than glazing over and warping rotor. Also make sure the reservoir is plumbed to the right as far as front and rear.check pedal ratio too.
     
    #4
    turbo69camaro, Sep 30, 2014
  5. Joad Donnelly

    Joad Donnelly Member

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    Are you backing up in low or high gear? If you're backing up in low I would recommend trying it in high. When we first switched from a 'glide to a Bruno/Lenco set-up I experienced the same issue as you are seeing and pretty quickly the reverser broke. I was told to do the high gear thing and the car was much easier to stop. This car had a brake pressure gage in it and the pressure required to stop in reverse dropped drastically. We haven't had another reverser issue since either because it sees so much less load when in high gear. Good luck!

    Joad
     
    #5
    Joad Donnelly, Sep 30, 2014
  6. TD381

    TD381 Member

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    The Brake Man Solution

    We had these same problems and two years ago, changed to The Brake Man's zero drag calipers, pads and brake fluid.

    Heat treated and Blanchard ground the new Strange rotors as TBM did not offer a direct replacement rotor.

    All problems solved and the F/C really stops. Great people to work with!!


    http://www.tbmbrakes.com/racing


    Steve Christophersen
     
    #6
    TD381, Sep 30, 2014

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