Wrangler YJ Rear Disk Brake Conversion

[@bryantschirhart1447]

Walt, like you I hate drum brakes, great video. Now I'm on the quest to find a 94 Grand Cherokee....

[@samlivingston5749]

I noticed a HUGE difference! I didn't swap the prop valve.

[@your2nd]

The biggest advantage is self cleaning of the disc. Yes you need to change the valve or the rear will lock up first and be dangerous .

[@waltj08]

I've been running this rig since the video was made, first with the D35 rear end as shown, and for two years now with a Ford 8.8 with disk brakes. It stops very predictably and reliably with no change in the master cylinder or valves.

[@randyanderson1983]

drum breaks actually have more contact for breaking force. only thing disc are better about is being cleaner and easier to maintenance and they worp easier

[@waltj08]

Contact surface isn't the most important issue with brakes. Heat dissipation is a bigger deal. Disk brakes do a much better job of this, which is why they're used in cases where the brakes have to work hardest--front axles of any rig. Additionally, the 'cleaner' part of the disk brakes makes them both more efficient and consistent, since the crap that builds up in drum brakes traps heat as well. Finally, their self-adjusting function is built-in, and actually works all the time. In terms of braking power, drum brakes are perfectly adequate for the back end of a Wrangler, even, probably, if you were towing a trailer. The offset of all this, as you noted, is the tendency of disks to warp. There's also the fact that disk pads tend to wear out quicker. In this case, I doubt either of those problems will be a big issue; The Wrangler won't work those rear disks hard enough to either warp them or wear them out quickly.

[@edrefeen4006]

Nice work

[@edwardcopper9681]

You mentioned the master brake cylinder proportioning valve. Did you have to make any changes latter on? Thanks, "Coop"

[@moabwheeling]

Very nice jeep. Thank you for responding to my question. I just subscribed to your channel.

[@waltj08]

Everything before 30:00 is straightforward, bolt-up mechanics. If you're good with that part, the rest of the video is the fabrication work to get the emergency brakes set up and working.

[@thecatfelix2988]

looks real good . I have a 1992 yj and typical rear brakes aren't helping. so i might start looking for that 1994 jeep Cherokee disc setup. how much you spend in all the used parts parts?

[@batty505]

Great video and thanks for sharing. Question, did you new pads and bleed the lines after it was all done?

[@hlatininja1]

This looks pretty good, wonder if this would work on 1994 yj, what year Grand Cherokee did u use?

[@moabwheeling]

Very good job !!! Nice work !!! What size tires are you running just out of curiosity ?

[@waltj08]

I'm running 31" tires. I've since taken the body lift off and replaced the body mounts. It made a huge difference in stability and ride.

[@DewManChew]

Are the axles 93 or 88? Cause the bolt holds for the backing plate don’t match up on my 95

[@soysonorense]

What year is the cherokee parts

[@dillwiggle2]

Will this swap work with an 80's jeep CJ7 ?

[@joelnavarro2174]

I know this is old but I got a question what kind of wheel studs you use for the swap

[@waltj08]

I used the ones for the Grand Cherokee, They're made for the rear disks, and so are just a little longer than the Wrangler version. If you've got aftermarket wheels, I'd still check to make sure they're going to work.

[@davidakin1481]

Disc better in any case for me wet drum brakes don't work

[@ArtuFlako]

Will the brakes a on a Cherokee 97 work as well?

[@waltj08]

No idea. I'd look at the part numbers to see if they match between the ones I used and the ones you want to use.

[@chriss.3476]

Did you ever find out?

[@mikhaillats7904]

would this work on 88yj with a stock rear end?

[@waltj08]

That's exactly the rig I did this on. The drivetrain is '93, but the chassis is '88.

[@hlatininja1]

did u use a used kit?

[@waltj08]

Nope, just found a Grand Cherokee in a wrecking yard, and pulled the parts I wanted.