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Thread: Brake booster delete thoughts

  1. #11
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    Eddie
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    Default Brake booster delete thoughts


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    Pedal box. Will post a pic later. Added bonus of giving miles of room for trumpets. You will need a smaller master as Hen has noted. I'm running 5/8" fronts with 3/4" rear. The rear is slightly too large but I had a couple of that size spare. Hoping I can tune it out with the balance bar. Brakes are Brembo all round. 4 pot fronts 2x40mm and 2x46mm pistons. Rears are 2x40mm.
    Last edited by Big T; 24th December 2018 at 11:03 AM.
    4agte finally finished. 252rwkw with more to come

  • #12
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    EDWARD
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    Default

    I'm not sure what was wrong. But blowing out all the lines and junctions as well as the proportioning valve fixed it.
    Now the only issue is a small one. The pedal play is almost 1". I've got to get my fat ass back under the dash and re adjust that brake pedal. I can stop now. The pedal travel is just too long.
    How much free play should there be? I'm thinking 1/4"? Whatis that? 8mm?
    Last edited by ZEROPILOT; 5th December 2018 at 02:59 PM.

  • #13
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    Dave
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    The correct push rod clearance at the master cylinder is 1mm between the push rod and the M/C internal piston. That should give you about a 1/4 to 3/8" free travel at the pedal.
    Note you MUST have clearance between the push rod and piston to allow brake fluid to return. Davew7
    Last edited by davew7; 5th December 2018 at 11:08 PM.

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