Hydraulic Clutch Conversion

Engine, Trans & Driveline

  1. mguner

    mguner Well-Known Member

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    Amarillo Texas
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    After wasting time and money on cheap Nissan parts...
    I am 99.9% certain now that the master cyl (13/16 bore) and slave cyl from a 1985 Jeep CJ or Scrambler (7/8 bore) will do the trick and allow the use of the stock fork. The slave is at O'Reilly for $18.19 and the master at advance is about $57. Part #s CSA11956 and 39738 respectively.... Have to fab a bracket for the slave and get your flex line figured but no big deal. The push rod will be rather simple 3/8 bolt or all thread cut and rounded at proper length. Just figure out your pedal travel and geometry and it's a done deal. I'll document the new setup with pics...
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  2. mguner

    mguner Well-Known Member

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    147
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    Joined:
    Jul 17, 2008
    Location:
    Amarillo Texas
    Local Time:
    11:45 PM
    Here are some new pics of the Jeep parts and a hose I had made. You can have a hose made that will reach all the way but I wanted to eliminate the possiblity of a spongy feel from a long section (32") of hose.
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    The Cherokee master has the side to side mounting flange and I believe the Scrambler master has the top to bottom style. The Cherokee unit has a different style slave flange than what I used here which is the Scrambler unit that by the way is only $20.00
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    The mounting detail of the slave unit. I did grind for header clearance on the bottom of the barrel end and for mounting bracket clearance on the inner bolt hole ear. The adjustable actuator rod is just a piece of 3/8 all thread with one end rounded and polished. If you have a really stout pressure plate a grade 8 bolt may be substituted. I also borrowed the adjustable plunger rod from the Nissan unit to expedite the installation.
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    The master cylinder mounted. Much easier to run the steel line with the new outlet location.

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    The jeep slave installed. The alignment is not perfect but it functions perfectly. There is a trade off on push rod alignment and bleeder clearance on the starter. If using a later model starter you can roll the slave position in a bit more and have a straight shot on the fork.

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    Notice the addition of gussets on the bottom of the bracket. While bleeding the system I noticed the bracket was flexing a bit so it received a trip to the welder.
     
    Last edited: Jul 22, 2008
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