B Body Mopar B Body Mopar forum

Hydraulic Clutch Conversion

mguner
07-17-2008, 09:59 PM
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...
http://www.partsamerica.com/product_images/img/ben/11956_040106.jpg
http://www.autozone.com/images/products/bx3/bx311958003.jpg
http://a214.ac-images.myspacecdn.com/images01/40/l_891b1e8f9f2162d28437219a652a8f0d.jpg

mguner
07-21-2008, 04:50 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.
http://a717.ac-images.myspacecdn.com/images01/116/l_7a91597600267aa9064ea36524df6abc.jpg
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
http://a978.ac-images.myspacecdn.com/images01/56/l_ec7910d8bdfe92f02a9c436a76c2f4e9.jpg
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.
http://a346.ac-images.myspacecdn.com/images01/42/l_432fb753318c076b55610c2864fbc319.jpg
The master cylinder mounted. Much easier to run the steel line with the new outlet location.

http://a815.ac-images.myspacecdn.com/images01/40/l_d595fa52cc3de73b4081cf28b0bf829e.jpg
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.

http://a48.ac-images.myspacecdn.com/images01/98/l_1978c5dc70909467b6cef92292da60bf.jpg
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.