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junkyard master cylinder replacements

Discussion in 'Early CJ5 and CJ6 Tech' started by RyanKnol, Apr 15, 2016.

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  1. RyanKnol

    RyanKnol New Member

    So ive been researching, and now my hear hurts. i have a 67 with the jam jar on the frame. i swapped disc brakes in the front. the jeep stops but the single reservoir MS is scary considering i dont have an ebrake yet, and the thing will leak all the fluid out in about 3 days.

    im wondering if anyone knows a somewhat direct replacement with a dual reservoir? or something i could build a bracket for? what does everyone use for an upgrade that i could find for cheap at the parts store. or possibly at the junkyard.

    thanks for any help :D
     
  2. aekdbbop

    aekdbbop Member

  3. pat w

    pat w Member

    Herm or r@p 4wd in Oregon City, Oregon
     
  4. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    No such a thing as a bolt on replacement for the single MC :(

    You'll have to go with one of the replacement kits or roll your own.

    Try a search here for "dual master cylinder", it's been discussed a number of times before.

    H.
     
  5. nickmil

    nickmil In mothballs.

    The R&P kit is pretty close Howard. Drill 3 holes in the frame, modify the brake lines, mount the reservoirs. Pretty much it. I installed one on my '59-5 when my old single reservoir m/c was going bad. Well worth the effort. The support bracket that comes with the kit also acts as the template to show where the holes need drilling. Very easy to do.
     
  6. RyanKnol

    RyanKnol New Member

    i dont mind building my own stuff. but the plungers all look different, lines come out different sides. etc. what has everyone done? i read somewhere about a corvette mc?

    ill keep searching,
     
  7. 47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    I made 2
    brake rant
    you can see the first one is a 1970ish cj5 one and the second is a 60~70s corvette. The only problem with the corvette one is that the lines have to go through the frame. There is an identical one where the lines go out the other way though. I just
    dont have the part number for it and I am not sure its actually for a corvette. Could be totally wrong.

    The second one was superior to the first in every way. It really took out all the play in the pedals. For what it was, it was great. Now that I have power brakes I no longer want to even think about that thing.
     
  8. Focker

    Focker That's a terrible idea...What time? Staff Member