I've got larger tires on my rig, but the calipers and rotors are stock.
Are there any retrofit, dual piston calipers I could use? I have a set of PBR calipers here, but I don't think I can fit a large enough rotor in my wheel for it.

 

you can do the dual diaphragm booster upgrade. i grabbed mine from a 98 cherokee.

 

just do the booster urgrade it is the best upgrade besides the injector upgrade that gets the bang for the buck you will lock the tires up when done

 

Injectors? lol
Well, I'll look into the booster upgrade, I'd still think I need a better set of calipers and bigger rotors. So there isn't any aftermarket company that does this?

 

Think what you want(to each there own), but I'd listen to caged and freegdr, they know there ****. Get a dual diaphragm booster and master cylinder from a 95 or 96, with those two years you willn't have to swap pedal assemblies and it will fit better. Even if you upgrade to bigger rotors, you probably willn't have a sufficient brake system to utilize them. If you want, get reman'ed parts at the parts house, thats what I did. Best upgrade I've done, and yes, you'll be able to lockem up

Google search for writeups on how to do this and parts required.

 

yes of course there is but if on a budget like most of us the booster upgrade for the money will really change the stopping power from what you have now then if you still fell the need for more you have the master done allready

 

Well thanks for the input guys!

 

yup, brake booster is all you will need. that's all i've done, other than new oem calipers/rotors/pads, and i can lock em up easily. huge difference here. i'm on 36's.

as for injectors, don't know, don't care.

 

along with the brake booster you can upgrade to rear disc brakes. and then there is the 99-04 grand cherokee duel piston brake calipers and spindles. not only does the conversion get you bigger brakes and calipers, it converts your rig to crossover steering. check out this link...very helpful!

http://www.4x4wire.com/jeep/tech/bra...ster/index.htm

it has all three upgrades in it

 

Wow man, that's a serious mod! Thanks for the link man!

 

I've been in this same spot now for a while. But all you need is in that link. Grand Cherokee front upgrades and rear disc. That's pretty much your best bet.
There are larger rotor/caliper kits out there. But they say you need 4.75" back spacing and 16inch rims or larger.
So with Break booster
Grand cherokee front
Disc rears.
Stainless break lines
Your pretty good. Noticeable difference I would say is 100% better then what you have. It's work though.
If your lookin to deal with what you have. Go with break booster. Good rotors and pads up front. Then do rear disc conversion. You can always put the grand cherokee brakes later. There is a relatively inexpensive way of sources those parts. It just takes time waiting and lookin for those finds. Plus it'll give you time to write out all the parts you'll need for that conversion (grand cherokee front).

 

don't you have to run 16" rims for the WJ swap?

 

no...that is a myth, if you use the calipers off the 2003-2004 grand Cherokee (they are silver vs black on the older models) then they will fit, it is all in that link i sent. also right now i am working on a way of using the calipers on stock jeep Cherokee spindles. the 87-90 front Dana 30 used detachable calipers brackets vs the integrated ones on the 91-2001 Cherokees. the grand Cherokee uses a detachable bracket as well. i am trying to get my hands on the grand Cherokee bracket to see if it can be modified to fit the Cherokee calipers under 15" wheels so you dont have to go the expensive route and get crossover steering. if i am successful i will post a build sheet. i am in the process of the booster upgrade, just deciding to go with the grand Cherokee proportioning valve or the Cherokee one. i have not gone rear disc yet due to the fact i have a Dana 44 and it is a little harder to do then a c-clip axle.

 

AEV Big Brake Kit


http://www.quadratec.com/products/12700_4300.htm

 

Nice! Let me know if I can help. I used to work at a commercial brake supply company, and we'd usually have at least 6 different calipers on the shelves for jeeps at any given time. I'm still pretty close with most of those guys, I'm sure they'll let me get my hands on a few brackets, take some pics and measurements.
So you are talking about the silver calipers? I believe those are the continential calipers vs the teves, which were black. I might have that info backwards though.
Are you saying that the black calipers used the integral spindle/bracket?
Or is it purely a clearance issue?