JIMMYRIG Posted October 5 Share Posted October 5 I just did a zj disc conversion with junkyard parts on my dana 35 non c clip. I'm still having poor performance and feel like all, if not most, of the power is going to the front brakes. I did a master cylinder and booster from a 97-01 xj so its dual diaphragm and I swapped in the prop spring from the zj. I deleted the load sensing valve under the bed so the only thing affecting proportioning is the xj valve. Any ideas as to why I'm getting poor performance? Link to comment Share on other sites More sharing options...
ghetdjc320 Posted October 6 Share Posted October 6 If I may ask, what was your goal in swapping to rear disks? A ZJ prop valve offer almost even pressure front and rear. It’s the brake pad surface area, sweep and piston size that provides the bias in a setup like this. If the hydraulics are all good, I’d focus attention on the pad material. What pads are you using and have you broken them in? That can have a massive effect on braking performance. Link to comment Share on other sites More sharing options...
JIMMYRIG Posted October 7 Author Share Posted October 7 When I had the drums I was getting a lot of squeaking in the rear and pad material was building up within the drum. I put the discs on for ease of changing pads. Do you recommend any pad in particular? The pads in the front have been replaced in the last couple months however the rear were the ones that came with the calipers from the junkyard. They had life left so I kept them. Link to comment Share on other sites More sharing options...
ghetdjc320 Posted October 7 Share Posted October 7 8 hours ago, DLYMANCH said: When I had the drums I was getting a lot of squeaking in the rear and pad material was building up within the drum. I put the discs on for ease of changing pads. Do you recommend any pad in particular? The pads in the front have been replaced in the last couple months however the rear were the ones that came with the calipers from the junkyard. They had life left so I kept them. Black magic pads are the hands down best I’ve run. For an off the shelf setup, Centric posi-quiet work good as well. Just keep the pad material on the softer side. The hard pads last a long time but tend to not “bite” as well. And keep in mind that any new brake pads need to embed into the rotor. If your hydraulics all checkout and you’re sure they are good, I’d turn the rotors at your local auto parts store, grab some soft organic brake pads or maybe semi metallics but stay away from ceramics. Follow the break in instructions from the manufacturer to get the pad material properly bedded into the rotor. It really can make a huge difference Link to comment Share on other sites More sharing options...
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