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Thread: hydroboost problem

  1. #1
    Registered Member
    Join Date
    Oct 2019

    Member #:4240

    hydroboost problem

    56 Chevy 210 wagon LS
    10 mile drive brakes locked up
    1st 95 Astro hydro salvage yard 2nd & 3rd RM Cardone hydro
    Wilwood 1" MC & PV

    54 Chev LS W/hydro perfect
    67camaro LS W/hydro perfect

    new member


  2. #2
    Registered Member chevynut's Avatar
    Join Date
    Nov 2011

    Member #:115
    Fort Collins, CO
    Welcome to the site. I'd be looking at other components besides the HB since you've changed it twice. What exactly do you mean by "locking up"? What type of brakes are you using front and rear and which is locking up?

    Is this a HB kit you bought or parts you put together yourself? Is the MC designed for your type of brakes? The 1" MC seems small for power brakes.
    56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension

    You can see my 56 Nomad build here http://www.picturetrail.com/chevynut

    For affordable C4 Corvette Suspension conversions for your car, visit http://www.classicedgedesigns.com

    Other vehicles:

    56 Chevy 2-door BelAir sedan
    56 Chevy 210 4-door sedan
    57 Chevy 210 4-door sedan
    1961 Willys CJ3B Jeep
    2001 Porsche Boxster S
    2003 Chevy Silverado 2500 HD Duramax

  3. #3
    Registered Member
    Join Date
    Jul 2017

    Member #:3477
    I have been researching Hydroboost setups and if you have your pressure lines wrong or pressure where it should not be, your brakes can lock at the corners

  4. #4
    Registered Member
    Join Date
    Apr 2012

    Member #:571
    As was discussed in the other current hydroboost thread, the pushrod between the hydroboost and master cylinder may be too long. This could result in the brakes dragging because the master cylinder is partially applied when your foot is off the pedal. This would get worse as the brakes heated up.

    Having the pushrod too long might also cause a problem with bleeding the brakes, but if somehow the brakes were already bled, or done with a pressure bleeder, then the dragging could occur.

  5. #5
    Registered Member
    Join Date
    Oct 2019

    Member #:4240
    56 210 is third install
    1st CPP HB kit on 67 Camaro Conv perfect
    2nd assembled used Astro HB and used MC parts on 54Chev lo rider perfect
    3rd install 56 210 used Astro HB Gm calipers 11" rotors new Wilwood 1" MC brakes self apply after 12 miles 6 different trips
    Ordered new RM cardone HB ordered 1 1/8"Wilwood MC after talking with Summit racing


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