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Rear Disc Conversion Questions

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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.





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