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Thread: 2000 vs 2003/4 master cylinder

  1. #1
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    Default 2000 vs 2003/4 master cylinder

    Finally upgraded knuckles from single piston 2000 design to 2003/4 dual piston, however pedal feel sucks. Yes we bled.

    Looking on dorman, it lists same master cylinder for 2000 and 2003, 15/16" bore

    M134437 is the part number

    Is that wrong, or is it indeed the same bore stroke for single AND dual cylinder calipers? I would have guessed it would be difderent?

  2. #2


    99dart's Avatar
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    Looking on Rock auto, a couple show bore dia of 1.125. Don't know if it makes a differece ornot. My converted my 99. Pedal felt hard until I got it out on the road stopping several times. Now it feels normal AND STOPS so much better.
    99 DA CC R/T
    13.97@100 w/modded kegger & ported TB
    12.96 @103
    10:8-1 .30 over forged bottom end
    R/T ported heads
    Detroit locker 4:56 gears
    Built 46RE MSaine 3500 stall Ultra Billet
    http://imgur.com/a/lOVuZ

  3. #3
    nitroram33's Avatar
    CAUSEDODGEPATTERNBALDNESS

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    ^The Centrics are 1.125

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    thanks ordered the centric to try and get a firmer pedal

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