rstarch345
NAXJA Forum User
- Location
- Where ever I can wheel
Ever since I installed disc brakes on the rear of my Jeep Cherokee (Ford Galaxy) 5 years ago, I'd been disappointed with the braking performance. Just never seemed to be what the modification should have been. I'd already modified the proportioning valve. Well, during the Moab trip I really put the brakes to work and at times I was really concerned about my stopping power. I was determined that when I got home, I was going to resolve the issue.
In many cases the recommendation was to use a proportioning valve from a GC, but I'd never heard of anyone recommending a GC master cylinder. In my thoughts, with a master cylinder designed with 4w brakes in mind AND the proportioning valve, it should solve the problem. I knew there were some internal differences in the cylinders in the master cylinder and that the bore was 1" instead of 3/4".
So, I obtained a proportioning valve from a local JY and purchased a re-manned GC master cylinder from a local parts house ('98 GC). There were some mounting mods that was necessary to make the GC prop valve fit the XJ, but other than that, everything fit right up. I pressure bled the brake lines and started the XJ up. I had brakes, but they were right on the floor. I figured that with the larger 1" bore, I needed more travel from the vacuum diaphram, so I disassembled everything and after three seperate adjustments, I've got brakes like I've never had before.
This was one mod I waited far to long to do, but at least it's done.
In many cases the recommendation was to use a proportioning valve from a GC, but I'd never heard of anyone recommending a GC master cylinder. In my thoughts, with a master cylinder designed with 4w brakes in mind AND the proportioning valve, it should solve the problem. I knew there were some internal differences in the cylinders in the master cylinder and that the bore was 1" instead of 3/4".
So, I obtained a proportioning valve from a local JY and purchased a re-manned GC master cylinder from a local parts house ('98 GC). There were some mounting mods that was necessary to make the GC prop valve fit the XJ, but other than that, everything fit right up. I pressure bled the brake lines and started the XJ up. I had brakes, but they were right on the floor. I figured that with the larger 1" bore, I needed more travel from the vacuum diaphram, so I disassembled everything and after three seperate adjustments, I've got brakes like I've never had before.
This was one mod I waited far to long to do, but at least it's done.
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