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Thread: Porportioning valve conversion.

  1. #1

    Default Porportioning valve conversion.

    Can a CPP disk/drum porportioning valve be changed to a disk/disk porportioning valve by removing a restriction in the rear port.

  2. #2

    Default

    Here is a link to the instructions for doing this!

    Classic Performance Products
    Aaron Strietzel
    Email Aaron
    Classic Performance Products Inc.
    378 E. Orangethorpe Ave
    Placentia, CA 92870
    Visit Our Site
    714/522-2000
    714/522-2500 fax

  3. #3
    Junior Member
    Join Date
    Dec 2010
    Location
    Florida
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    2

    Default

    I pulled the rubber piston out of mine today. It doesn't mention taking out the spring, but i assume you remove that too. Correct?

  4. #4
    Junior Member
    Join Date
    Feb 2011
    Location
    Northern IL.
    Posts
    2

    Default 67 ElCamino Hard Brake Pedal

    I have a 66 Elcamino same issue. So far I have tries new Booster, and Master gone through 2 engines no change. I did swapout the rubber hoses in the rear brakes and it helped a little. I am now going to repl. all front brake lines to see what happens. I will let you know.

  5. #5
    Member

    Join Date
    Feb 2011
    Location
    Seattle Washington, USA
    Posts
    11

    Default

    I fabbed up all new lines and the rear rubber has been replaced. New front lines too. The booster feels better, but with the low pressure on the calipers, it may be master. I got busied up on a friends firebird today, so no work was done on the ElCo. I look forward to your diagnostics too. What presure do you have at your calipers, do you know?

  6. #6
    Junior Member
    Join Date
    Feb 2011
    Location
    Northern IL.
    Posts
    2

    Default Hard Brake Pedal

    Unfortunately the El is apart right now. Been doing update this winter. Should be ready to takle the Brake issue by Mid March. Will let you know what I find then.

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