Brakes spongy brakes

Discussion in '2005 - 2009 Specific Tech' started by GTMAXX, Mar 24, 2013.


  1. GTMAXX

    GTMAXX Member

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    Just installed Brembo GT 500 brakes with new ss lines on 06 GT, bled the crap out of them, getting no bubbles, but still have a spongy pedal. A couple of pumps gets a firm pedal but this is not acceptible. Any ideas are appreciated. Also, if I wind up flushing whole system what is the best brake fluid for a weekend car that sees occasional track days?
  2. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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    not that up to speed on the newer stuff, but im guessing your master cylinder cant handle the gt500 brakes
  3. earleys94gt

    earleys94gt Active Member

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    Do the GT500's, like the Terminators, have the hydro-boost master cylinders?
  4. GTMAXX

    GTMAXX Member

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    thanks , don't know if they are different but will check it out.
  5. Scott2

    Scott2 New Member

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    Did you follow FORD instructions and bleed all four wheel cylinders starting from the one furthest away to the master cylinder to the closest in order?
  6. GTMAXX

    GTMAXX Member

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    I was under the impression that was not needed since I didn't touch the rears but think I will try that this week when I get time. Thanks for the input. Just hope I don't have to start throwing parts at these things to get them to work right.
  7. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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    i eould say if you didnt bleed the rears you need to definitely
  8. GTMAXX

    GTMAXX Member

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    UPDATE! Messaged Brembo about problem with the GT 500 brakes and got back a condescending note about my lack of knowledge about master cylinders and compatible components while trying to sell me a $3,000 set of brakes. NO HELP. Got in touch with one of the "tech" guys from FORD RACING and got the help I needed. Turns out I did need more knowledge as there are two bleeder valves on each caliper-one on each side- and you gotta bleed both. Silly me. All other components compatible and working good. Problem solved. No spongy pedal. Work great. Thanks FORD RACING! :nice:
    :track:
    gearheadboy likes this.
  9. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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    cool beans

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