DougJ
NAXJA Forum User
- Location
- Prather, CA
My '01 is slowly evolving, and one of the things I've been planning is disc brakes for the rear. Since I got back from Iraq in May I've installed a RigidCo front bumper, HP D-30 with 4.56 gears and ZJ steering, and 4.56's in the the Chrysler 8.25 to match. I've been watching the yards in the meantime, looking for a ZJ with disc brakes. I found a '95 last weekend and took the backing plates / mounts, calipers, soft lines, and hardware. I didn't have a 12 point 1/4 inch to pull the pin from the carrier so I had to run and get that to finish. Dummy.
It ended up costing me about $58 for the parts :yelclap: The hardware I took included the caliper mount bolts, backing plate mount studs and nuts, and 8 good wheel studs.
From left to right here's the stock XJ wheel stud, disc brake ZJ wheel stud, new replacement ZJ stud, XJ backing plate stud, and ZJ backing plate stud. The nut is just there to keep the new stud from rolling away.
Stock brake assembly:
Axles and brake parts removed:
ZJ backing plate with new parking brake pads. The center bore of the backing plates had to be opened up by approximately .040" to fit over the 8.25 housing. I also had to slightly elongate the mount holes to get a smooth fit. Those junkyard parts cleaned up nice.
Completed assemblies, the brake lines are not hooked up yet though. I ended up flipping the ZJ soft lines from going up from the caliper to down, and I rotated them 180 deg on the mounting surface. This has the soft line mount plate sitting just under the spring pad. I'm going to weld a small tab on there to solidly mount the lines. I just made a loop in the stock lines to take up the extra length. I don't have picture of that yet.
I bought rotors, ceramic pads, parking brake shoes, 4 ZJ wheel studs, and fluids for front and back, including friction modifier for the trac-lok, at Napa for about $180. Since I just had the rear re-geared and the front gears are also fresh it's time for a fluid change, but no need for new bearings and seals in the rear axle. So I'm in for about $240 for my disc brakes so far. I'm thinking of installing Liberty e-brake cables rather than modifying my cables. They're about $40 each at Napa. So no parking brake at this point. I'm going to be installing fresh rotors and pads up front soon. I've been considering the WJ brake mod up front, but we'll see how things work out for a while.
So how do they work? They've only been on there for a day or so, but they feel good! Not as strong as I wanted at first, so I'm trying the Go Jeep proportioning valve mod right now. Seems better, and once I freshen up the front I think it'll be very even front to back.
Doug
It ended up costing me about $58 for the parts :yelclap: The hardware I took included the caliper mount bolts, backing plate mount studs and nuts, and 8 good wheel studs.
From left to right here's the stock XJ wheel stud, disc brake ZJ wheel stud, new replacement ZJ stud, XJ backing plate stud, and ZJ backing plate stud. The nut is just there to keep the new stud from rolling away.
Stock brake assembly:
Axles and brake parts removed:
ZJ backing plate with new parking brake pads. The center bore of the backing plates had to be opened up by approximately .040" to fit over the 8.25 housing. I also had to slightly elongate the mount holes to get a smooth fit. Those junkyard parts cleaned up nice.
Completed assemblies, the brake lines are not hooked up yet though. I ended up flipping the ZJ soft lines from going up from the caliper to down, and I rotated them 180 deg on the mounting surface. This has the soft line mount plate sitting just under the spring pad. I'm going to weld a small tab on there to solidly mount the lines. I just made a loop in the stock lines to take up the extra length. I don't have picture of that yet.
I bought rotors, ceramic pads, parking brake shoes, 4 ZJ wheel studs, and fluids for front and back, including friction modifier for the trac-lok, at Napa for about $180. Since I just had the rear re-geared and the front gears are also fresh it's time for a fluid change, but no need for new bearings and seals in the rear axle. So I'm in for about $240 for my disc brakes so far. I'm thinking of installing Liberty e-brake cables rather than modifying my cables. They're about $40 each at Napa. So no parking brake at this point. I'm going to be installing fresh rotors and pads up front soon. I've been considering the WJ brake mod up front, but we'll see how things work out for a while.
So how do they work? They've only been on there for a day or so, but they feel good! Not as strong as I wanted at first, so I'm trying the Go Jeep proportioning valve mod right now. Seems better, and once I freshen up the front I think it'll be very even front to back.
Doug