BRAKE PROBLEMS !!!

Discussion in 'PSI Superchargers Tech Questions' started by Bob Holley, Oct 22, 2003.

  1. Bob Holley

    Bob Holley New Member

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    Have Mark Willams carbon fiber brakes.
    If brakes are used hard (no cute)they stop the car but as soon as we start to tow back to the pit area the brake handle will become soft and you can pull all the way in and it will not even slow the car down while towing.
    We are using hi temp fluid and have cleaned the rotors and roughed up.
    As soon as everything cools down the they work fine.
    Any ideas????

    Bob Holley

    [ October 22, 2003, 08:08 PM: Message edited by: Bob Holley ]
     
    #1
    Bob Holley, Oct 22, 2003
  2. kosky racing

    kosky racing Comp Eliminator

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    just pump them back up they usually are fine in a miute or two. never had any problems . Always that way after using them hard after a run. But allways came back to normal after arun.
     
    #2
    kosky racing, Oct 22, 2003
  3. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    maybe its still boiling the fluid. in reynolds this year jason dropped a valve about half track, and blew the blower off. he was pissed and didnt throw the chutes, just stopped it with the brake, albeit pretty hard. the nosepeice paid the price as the brakes went away on the return road, the tow truck stopped, and the car didn't until the tow rope violently stopped it when the car pulled along side the truck, cracking the nose.

    could be the same thing if glen is stopping it with no chutes, even on mid 6 run.

    btw bob, did you get my email about the clock box cover?
     
    #3
    Will Hanna, Oct 23, 2003
  4. Gary Mangiafico

    Gary Mangiafico Member

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    What brand Brake Fluid? I have gotten bit by using Wilwood Hi-temp brake fluid it is just a DOT 3 Fluid with a mis-leading brand name. Just using Wagner Dot 4 now and that fixed the problem.
     
    #4
    Gary Mangiafico, Oct 23, 2003
  5. Bob Holley

    Bob Holley New Member

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    Thanks,
    I am using Wilddwood.
    Will flush system out and change fluid.

    Bob Holley
     
    #5
    Bob Holley, Oct 23, 2003
  6. Bob Holley

    Bob Holley New Member

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    Will,
    No email about clock box cover????
    Bob
     
    #6
    Bob Holley, Oct 23, 2003
  7. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    bob i must have left the cover off that clock box over at your pit or at carl's.
     
    #7
    Will Hanna, Oct 23, 2003
  8. Funnycarbob

    Funnycarbob Top Dragster

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    I had a problem like that. I found that the rotors were not flat and would twist after a run. This would push the pads back to far after a run. When the rotors cooled, the rotors were near flat. This made it hard to find. The rotors would also bind up on the hats.
     
    #8
    Funnycarbob, Oct 24, 2003
  9. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    i could be wrong, but i've never heard about a carbon fiber rotor warping tho...
     
    #9
    Will Hanna, Oct 24, 2003
  10. Bob Holley

    Bob Holley New Member

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    Will,
    Didn't see anything like your cover around when loading up. Keep my eyes open though. I have Carls ph.# if you want to hive him a call. He has a new #. If you need it just past a reply and I will email to you.
    Bob Holley
     
    #10
    Bob Holley, Oct 24, 2003
  11. Randy G.

    Randy G. Top Alcohol

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    I just serviced the all carbon brakes on my TA/FC and here's the dope from Strange and Lamb Components.

    I replaced the rear pads and Lamb resurfaced the rotors. Lamb sells a pressure residual valve to be used on the rears. I installed a new Strange master cylinder with the remote reservoir. Howard recommends a residual pressure valve on the rear with a proportioning valve to regulate the fronts. Recommended pressure at 1,000 pounds pressure to the rear is 600-700 to the front. This is the setup we've run for years and the car stops on a dime even when the brakes are cold. I had brand "SP#" on my previous car and had nightmares after watching the Weaver's trip to the sand traps at Pomona more than once which totally destroyed their cars.

    I watched Shelly Anderson safely make the turn at Pomona with no chutes after running 298 miles per hour in a dragster which had rear carbon fiber brakes only. I told myself after seeing that I will NEVER have another car without carbon fiber brakes.

    Good luck.
     
    #11
    Randy G., Oct 25, 2003

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