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brake problem!! HELP!!!

Discussion in 'The Hokey Ass Message Board' started by THE CHIEF, Mar 3, 2009.

  1. THE CHIEF
    Joined: Feb 22, 2007
    Posts: 847

    THE CHIEF
    Member
    from MIAMI

    ok this is the situation, the purchase this firewall mounted booster master kit, here it is http://www.piratejack.net/Power-Bra...rake-Pedal-Conversion-Kit-Firewall-mount.html

    i ran all new lines 10lbs residual pressure valves in in each front wheel and one for the back, the line on the front is split with a "T" and one line going to the back, i bleed the master a few times no air bubbles, the problem is that the pedal is supper spongy and im barely getting any fluid going to the back. any one got any ideas on what to do? thanks in advance

    this is the power brake kit
    [​IMG]

    this are the residual valves
    [​IMG]
     
  2. hotrod-Linkin
    Joined: Feb 7, 2007
    Posts: 3,382

    hotrod-Linkin
    Member

    why did you use residuals?

    are your brakes drum/drum or drum disk?

    if drum drum you should not need the residuals.
    if drum/disk you will need a proportioning valve
     
  3. JAWS
    Joined: Jul 22, 2005
    Posts: 1,848

    JAWS
    Member

    Dude you don't need the residule valves if the master is above the calipers/wheel cylinders. You only need a prop/combo valve.
     
  4. Royalshifter
    Joined: May 29, 2005
    Posts: 15,730

    Royalshifter
    Moderator
    from California

    Do you maybe have your lines crossed at the master?
     
  5. lodaddyo
    Joined: May 5, 2002
    Posts: 1,259

    lodaddyo
    Member

    im pretty sure you only need residual valves if the master cylinder is mounted below the calipers or drums. (JAWS beat me to it)
     
  6. JAWS
    Joined: Jul 22, 2005
    Posts: 1,848

    JAWS
    Member


    Good one too
     
  7. FiddyFour
    Joined: Dec 31, 2004
    Posts: 9,024

    FiddyFour
    Member

    10# valves, and you have three of them total? with a firewall system, its not needed, but i can see it. i have em on my 52.

    is this a drum/drum setup?

    if its disc in front... 10#?
     
  8. lodaddyo
    Joined: May 5, 2002
    Posts: 1,259

    lodaddyo
    Member

  9. hotrod-Linkin
    Joined: Feb 7, 2007
    Posts: 3,382

    hotrod-Linkin
    Member

  10. JAWS
    Joined: Jul 22, 2005
    Posts: 1,848

    JAWS
    Member

    Right, we don't know what he has at the other ends
     
  11. THE CHIEF
    Joined: Feb 22, 2007
    Posts: 847

    THE CHIEF
    Member
    from MIAMI

    forgot to add that its a drum/drum. the reason i used the valves is becase the guy from pirate jacks said i needed them here is was i found in the piratejacks site
    [​IMG]
    Drum brakes require a 10 lb. residual pressure (RPV10) to counteract the spring tension in the drum system which tends to pull the shoes away from the drums. This will give you a longer pedal travel and "spongy" brakes. The residual valve holds a pressure keeping the shoes near the drums giving a higher firmer pedal. Also required a metering valve (PVM) to the front (the metering valve prevents nose dive).
     
  12. hotrod-Linkin
    Joined: Feb 7, 2007
    Posts: 3,382

    hotrod-Linkin
    Member


    take them off and bleed again,,,you'll see he's full of shit.
     
  13. THE CHIEF
    Joined: Feb 22, 2007
    Posts: 847

    THE CHIEF
    Member
    from MIAMI

    front port is the for the front wheels, rear port(closer to the firewall) for rear wheels...right?
     
  14. hotrod-Linkin
    Joined: Feb 7, 2007
    Posts: 3,382

    hotrod-Linkin
    Member

  15. THE CHIEF
    Joined: Feb 22, 2007
    Posts: 847

    THE CHIEF
    Member
    from MIAMI

    ok so i got the order right
     
  16. hotrod-Linkin
    Joined: Feb 7, 2007
    Posts: 3,382

    hotrod-Linkin
    Member

    the only reason you need residuals is if the master is below the floor.if it's above the wheels on the firewall,you don't need the valves at all.
     
  17. FiddyFour
    Joined: Dec 31, 2004
    Posts: 9,024

    FiddyFour
    Member


    not always
     
  18. THE CHIEF
    Joined: Feb 22, 2007
    Posts: 847

    THE CHIEF
    Member
    from MIAMI

    ok so tomorrow ill remove them and see what happends.
     
  19. JAWS
    Joined: Jul 22, 2005
    Posts: 1,848

    JAWS
    Member

    Right as rain puddin..:D
     
  20. hotrod-Linkin
    Joined: Feb 7, 2007
    Posts: 3,382

    hotrod-Linkin
    Member

    i believe his application calls for that plumbing,correct me if i'm wrong.
     
  21. THE CHIEF
    Joined: Feb 22, 2007
    Posts: 847

    THE CHIEF
    Member
    from MIAMI

  22. JAWS
    Joined: Jul 22, 2005
    Posts: 1,848

    JAWS
    Member

    Depends on the valving in the master. How do I put this, um, some don't apply the front and rear at the same time.
     
  23. JAWS
    Joined: Jul 22, 2005
    Posts: 1,848

    JAWS
    Member


    yeah, rain and puddin!:D
     
  24. hotrod-Linkin
    Joined: Feb 7, 2007
    Posts: 3,382

    hotrod-Linkin
    Member

    you guy's avatars are scaring me..........
     
  25. JAWS
    Joined: Jul 22, 2005
    Posts: 1,848

    JAWS
    Member


    boo!
     
  26. hotrod-Linkin
    Joined: Feb 7, 2007
    Posts: 3,382

    hotrod-Linkin
    Member

    yikes..brother man!!!!!!!!!!!!!!
     
  27. JAWS
    Joined: Jul 22, 2005
    Posts: 1,848

    JAWS
    Member


    This is fun..:D
     
  28. hotrod-Linkin
    Joined: Feb 7, 2007
    Posts: 3,382

    hotrod-Linkin
    Member

    stay tuned...the brake saga will continue
     
  29. THE CHIEF
    Joined: Feb 22, 2007
    Posts: 847

    THE CHIEF
    Member
    from MIAMI

    hopefully it wont continue, hopefully tomorrow i can manage to fix it
     
  30. New Old Fart
    Joined: Nov 19, 2008
    Posts: 147

    New Old Fart
    Member

    You dont need the residual valves with the master above the wheel .
    And whats with the metering valve just plumbed in to the front brakes ? I know metering valves are designed to delay the front brakes for a split second ( anti dive ) but I thought front and rear needed to be plumbed into them, at least the ones I have seen.
    Every braking system that I have worked on , the front reservoir is for the rear brakes and the rear is for the front.
    But if thats what they say, than who am I to argue.
     

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