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Hot Rods Question about a brake proportioning valve

Discussion in 'The Hokey Ass Message Board' started by Bruce Fischer, Mar 18, 2018.

  1. I got 1 P.V.Valve from pull a parts yesterday. I am going to install it to day. The radiator shop called me and said after they had soaked my radiator it has a couple of small leaks. They asked if I wanted a new one that was made of plastic for $140. and I said no. I said please see if you can fix the old brass one. Yesterday they called me and said it was ready . I go pick it up Monday for $80. I think it was a good deal. What do you all think? Thanks Bruce.
     
  2. ROADSTER1927
    Joined: Feb 14, 2009
    Posts: 3,127

    ROADSTER1927
    Member

    I think the original fixed is what is preferred! Gary
     
    Bruce Fischer likes this.
  3. saltflats
    Joined: Aug 14, 2007
    Posts: 12,594

    saltflats
    Member
    from Missouri

    Hard to find a radiator shop that will fix a radiator now days.
    I say you did good.
    We just call are local shop recore.
     
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  4. Engine man
    Joined: Jan 30, 2011
    Posts: 3,480

    Engine man
    Member
    from Wisconsin

    Some leaks only occur at higher pressure. I've seen many cracked hydraulic cylinders, hoses, connections and o-ring joints that only leak at over 2000 psi. If it isn't a large volume leak the pressure loss will be negligible. The system might only lose a few drops per application, but in thousands of applications, it can lose a lot of fluid.
     
    Bruce Fischer likes this.
  5. I’m officially done....good luck with the brakes Bruce.....


    Sent from my iPhone using H.A.M.B.
     
    Bruce Fischer likes this.
  6. $80 is not bad. New ones (brass/ copper) are often not much more than that. Probably less than the $140 plastic POS.
     
    Bruce Fischer likes this.
  7. Dennis Cator
    Joined: Apr 4, 2017
    Posts: 15

    Dennis Cator
    Member
    from CANADA

    Question? Does it matter? Manual brakes drum verses disc brakes . Do these applications require different Proportion valves. Thanks
     
  8. V8 Bob
    Joined: Feb 6, 2007
    Posts: 2,966

    V8 Bob
    ALLIANCE MEMBER

    Drum brake vehicles never came with a proportioning valve, and as a general rule do not need them. There are a couple of situations where a prop valve could be useful, such as;
    When later servo drum brakes are used on the rear with early non-servo drums are on the front, ie Lockheed fronts and Bendix rears, and
    Some trucks that are normally run empty.
     

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