89whiteXJ

I have been searching the upgrade and I may tackle it soon. Does anyone know if you can run a 15" rim with the upgrade?

gpXJ

From my understanding, you can....but not with stock backspacing. You would need 4" or less backspacing. You can also grind down the outer housing a bit on the calipers. But I woudl be leery of grinding too much..heh.

89whiteXJ

yeah i know I wouldnt want to grind it too much either. I have read about diff WJ calipers would fit diff rims didnt know if anyone had any ideas or info on that.
Thanks

93XJLI

also, theres 2 calipers.. teaves and akebono. the akebonos are noticeably larger, not sure when they made the switch.

89whiteXJ

See that is what I was unsure about. I wonder if the Teaves "smaller" are not as strong.

93XJLI

strong? as in what sense?

the akebonos are bigger and on paper will stop better.

will you notice a difference? probably not.

89whiteXJ

By strong I ment stopping power. So if I went with the Teaves I would more than likely be ok on the 15" wheels.

93XJLI

with a good amount of backspacing, yes.

you'll also need to upgrade to the larger brake booster (if you have ABS you already have it) to make this even a remotely effective upgrade.

89whiteXJ

I do not have ABS but I already have the double diaphram set up just not installed. I have less than a 4 BS i think 3.5 BS.

93XJLI

werd.

you should be set.

89whiteXJ

Cool thank you for the extra info. And if anyone else want to chime in with some added things Im alwasy open to hear it.
Thanks
Frankie

USMCJeeper

When you do it take lots of pictures bc I am thinking about doing this to mine.

als98xj

I'm gathering my parts from a liberty w/ ChryCo 8.25 should bolt on w/no grinding. there is work to Ebrake and brake fluid lines required, but thats part of the game and half the fun. Good luck and Semper Fi.

93XJLI

plenty of info and writeups on naxja

hercman

I'm looking at upgrading the brakes on my 85. I don't plan on doing a disc swap for the rear yet but would putting the WJ booster in my XJ make any difference or do I need to up the size of the stock rotors as well? I know going bigger on the rotors will help but I'm piece mealing one section at a time. And since my XJ needs the brake system flushed I'd swap the booster and MC out first and do the rotors later.