ComancheLee Posted March 31, 2017 Share Posted March 31, 2017 In the process of doing the rear disc conversion on my 89 Comanche Dana 35 none clip. My question is could I run the stock master cylinder and brake booster? Or will I have to upgrade?? Link to comment Share on other sites More sharing options...
HOrnbrod Posted March 31, 2017 Share Posted March 31, 2017 Yes you can run the stock master cylinder and brake booster. Link to comment Share on other sites More sharing options...
Green Mesa XJ Posted March 31, 2017 Share Posted March 31, 2017 I put a ford 8.8 with disc brakes in my 85 XJ and run the stock booster and master. Only thing I did was remove O-ring from the proportioning valve, that was the advice when I did it, now I'm not sure what the recommended procedure is, I see a lot of talk of using a ZJ portioning valve, or leaving the stock valve alone. You can update the booster and master to a dual diaphragm designs for better braking but that's another headache of making and fitting your own lines to the new brake master. Simplest way is do the swap and leave everything else stock. The only thing I don't know about is if you need to remove the o-ring from the proportioning valve or not. Many people say they are fine with it as is. Sent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
big66440 Posted March 31, 2017 Share Posted March 31, 2017 Like Hornbrod said, stock is fine. Link to comment Share on other sites More sharing options...
ComancheLee Posted March 31, 2017 Author Share Posted March 31, 2017 Cool thanks fellas Link to comment Share on other sites More sharing options...
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