I've done about 6 of those disc brake swaps, always ZJ parts, and never touched the prop valve until the last one. They do work without changing the prop valve spring, but holy cow when you put a manual prop valve in it's surprising how much stronger the brakes can feel. Just open the valve all the way and do some emergency stop tests and slowly close it until it just barely skids the rear tires. It's worth the effort of putting in the manual prop valve (I used the wilwood one). Good video on the swap!
My first time watching these guys and I gotta say, I love this video! Very detailed when he’s working and shows you step by step everything he’s doing. Immediately subscribed after watching this. Also nice to find a UA-camr that specializes in XJs! Keep up the good work!
I did this swap years ago on my 97 XJ with 8.25” rear. First time was with ZJ backing plates and proportioning valve it worked great. Pedal feel was amazing. Stoping power was better. When the ZJ backing plates rotted I used 06 liberty backing plates . They slide right on unlike the ZJ plates. I was also able to use the ZJ calipers on the liberty backing plates. It’s all the same bolt pattern. I was able to use the stock parking brake cables with a set of home made adapters. Note:ZJ and KJ parking brakes suck. Hope this helps
Bro, I ordered 1 centercap for my WJ and you sent two. They came pretty quick and I appreciate it. But please let me know if you want me to mail the extra one back to you. 👊😎
This is definitely on my to do list but I was also considering lockers. I've been really debating whether or not I want lockers on my '98 XJ sport. He you ever installed lockers on one of your XJ's around that year, and which type have you have the most luck out of Dex? You're the Jeep Doctor so I figured your opinion would be what helps make my mind up on what type but cost aside, and which setup option is best on a Cherokee base?
That disc converion is one of the best things ive ever done on my xj and its pretty heavily modded at this point. Power stop pads front and rear really helped as well.
Have you done this swap with a Dana 44? I know you’re more into the xj -zj. I am myself. But I’ve gotten myself ahold a rust free 2005 LJ unlimited. Had a blown rear diff. I opted to swap in a donor axle. Both Dana 44 axle. Original is 2005 disc brake no ABS. Donor is 1999 drum brake Dana44. I tried to swap the backing plates and axle shafts around. But it seemed like the bearing offset was different
@dannyrich9902 (honestly I think my disc brake swap video is better than this one, it's got a defined structure and covers every single thing you'd ever need to know, opposed to "y'all wanted this video, this is what I'm doing today".) Dex is better at mechanic-ing than making videos. He knows what he's talking about, and does his work very well, but isn't the greatest at structuring a presentation of that information
@@WAEMIDIVyes but he has a different crowd who watches his videos. I like both your channel and dex. Both add their own really good stuff. People who know their way around things understand dexs stuff more, and I like your vids for when I know nothing about anything and need all the help I can get lol
I have a 90 mj with a d44. In 90 I think jeep changed the backing plate and due to the d44 not being a c-clip everything is different. I've seen kits but don't know how good they are, and never seen a good rear disc conversion for the mj. I would like to see that.
I believe it is any 03 - 07 Liberty should have the backing plates you need. You should be able to tell an 02 apart by the 4x4 badging under the rear cargo windows - 03+ moved it to the swing gate. Source: have had a KJ Liberty for the last 13 years
Not sure about the aftermarket brake calipers,,, But if I remember correctly Stock Calipers are a3/8" Hex on the bleeder screws, and they have a 3/8" 24 tpi fine thread.
Hey Guys, a couple years ago we bought a rear brake backing plate/ disk brake bracket set as a replacement for a jeep ZJ that has rusted out backing plates, if I remember correctly they were from Crown auto, and we ordered them from Summit Racing, after doing a bit of research and comparison they look to be aftermarket replacement Ford Explorer backing plates, that had the bolt holes ovaled out so they will bolt up to a jeep axle. From what I could tell, probably from about a 1998 to 2003 Ford Explorer. So for a little experiment maybe you might be interested in looking into that for yourself. The Rear jeep caliper brackets are often ok and reusable, but the backing plates are the parts that rust out and need replacement, But original jeep ones are not available.
The rear brake shoes where on backwards on Justin’s rig primary shoe (big) towards the front and secondary(small) shoe towards rear will make them try to stick and grab if run backwards…….. just dealt with this on a 98 classic I bought my wife
Saw another upgrade I'd like to see done. They switch out the single diaphragm brake booster for a dual diaphragm one. They say it makes the brakes more firm.
Gravity bleed 100%! Dont you have to replace the master cylinder too? The check valve inside for drum brakes will hold too much pressure when the petal is released causing the pads to drag and wear out fast.
If you buy a Replacement Set of Disk brake Backing plates and Brackets from Crown auto, You definitely do not want to use the parking brake springs that come with them.. I absolutely recommend using a stock set of ZJ parking brake springs.
Hopefully you will read this and help me I messaged you on another video my 1991 4L cherokee when you floor it just falls on its face like you turned It off this list of things I've tried Fuel pump fuel filter bypassed the resistor Mopar cps Mopar cam sensor in bottom disturbtor yrs back I updated it to the one that looks a flying saucer i think it's 97 and up ran fine for yrs so I just installed a new of that style checked for play/run out in the distributor shaft it's tight swappped tgecoil with a known good from a working correct jeep did a driving under a load fuel pressure test it's got 33 ish with the vac hooked to regulator and 40 unhooked still stumbles will only recover if u let off the throttle and ease into it im starting to think it's the ecu Going to store right to get a inline noid light see what that tells us
That’s like putting disk brakes on a ford 9inch take Ford Explorer rear disk brakes fit right on but they said you need shim to put the axles in deeper
We got a brand new set of ZJ transmission fluid cooler lines from Rock Auto a couple weeks ago for only about $22 plus shipping, and they sent them in three days. Maybe they have the ones for your jeep also, you may want to take a look at their website
My rear brakes don’t work with stick proportion valve and spring? Anyone else have same issues? They’re working, but only rubbing rear rotors when driving, then barely applying pressure when brake pedal is pressed
I’ve sold 94 up ZJ rear discs as a kit on a very popular XJ site for over 10 years. I did this for myself for one main reason. If you break an axle shaft while off roading the shaft will not fall out. Very easy & pretty much a bolt on upgrade. Drums suck!!!!
Always film in the direction the sun is pointing, not the opposite. If you would have rotated the axel 180 facing the sun, and filmed from the direction of the sun. Would have taken care of your lighting issues. Buy a tripod
You always think some one pissed off their mechanic…… after being in the xj community for a while I have realized that the pissed off mechanics name may be buddy wiser or miller lata’. These boys drank!! You never know what you’re gona find!
![Jeep Cherokee: Rear Disc Brake Swap - KJ/ZJ No Welding; Bolt-on Conversion ['91-'01 XJ]](/img/n.gif)
I've done about 6 of those disc brake swaps, always ZJ parts, and never touched the prop valve until the last one. They do work without changing the prop valve spring, but holy cow when you put a manual prop valve in it's surprising how much stronger the brakes can feel. Just open the valve all the way and do some emergency stop tests and slowly close it until it just barely skids the rear tires. It's worth the effort of putting in the manual prop valve (I used the wilwood one). Good video on the swap!
Do you have the part number for that valve?
what do you mean by "MANUAL" prop valve? NON-power?
@@blownaway4371 manually adjustable.
My first time watching these guys and I gotta say, I love this video! Very detailed when he’s working and shows you step by step everything he’s doing. Immediately subscribed after watching this. Also nice to find a UA-camr that specializes in XJs! Keep up the good work!
I appreciate that!
I did this swap years ago on my 97 XJ with 8.25” rear. First time was with ZJ backing plates and proportioning valve it worked great. Pedal feel was amazing. Stoping power was better. When the ZJ backing plates rotted I used 06 liberty backing plates . They slide right on unlike the ZJ plates. I was also able to use the ZJ calipers on the liberty backing plates. It’s all the same bolt pattern. I was able to use the stock parking brake cables with a set of home made adapters. Note:ZJ and KJ parking brakes suck. Hope this helps
Bro, I ordered 1 centercap for my WJ and you sent two. They came pretty quick and I appreciate it. But please let me know if you want me to mail the extra one back to you. 👊😎
This is a cool upgrade. Thanks for being very helpful and detailed
This is definitely on my to do list but I was also considering lockers. I've been really debating whether or not I want lockers on my '98 XJ sport. He you ever installed lockers on one of your XJ's around that year, and which type have you have the most luck out of Dex? You're the Jeep Doctor so I figured your opinion would be what helps make my mind up on what type but cost aside, and which setup option is best on a Cherokee base?
That disc converion is one of the best things ive ever done on my xj and its pretty heavily modded at this point. Power stop pads front and rear really helped as well.
I did that to my xj and didn't change the proportional valve and it works fine for 20 years.
Have you done this swap with a Dana 44? I know you’re more into the xj -zj. I am myself. But I’ve gotten myself ahold a rust free 2005 LJ unlimited. Had a blown rear diff. I opted to swap in a donor axle.
Both Dana 44 axle. Original is 2005 disc brake no ABS.
Donor is 1999 drum brake Dana44. I tried to swap the backing plates and axle shafts around. But it seemed like the bearing offset was different
Just did the rear disk swap and sourced all parts from a 05 liberty!! Cost about 60 bucks for the dudget conversion!
Chrysler 8.25 axle tho
Installed a jk rear end with discs on my tj. Love them. Also, put a disc conversion kit on my 96 f350. Only way to go
Have I just been outdone??
Damn it, I think so! But top two jeep channels between the 2 of you!
@dannyrich9902 (honestly I think my disc brake swap video is better than this one, it's got a defined structure and covers every single thing you'd ever need to know, opposed to "y'all wanted this video, this is what I'm doing today".)
Dex is better at mechanic-ing than making videos. He knows what he's talking about, and does his work very well, but isn't the greatest at structuring a presentation of that information
@@WAEMIDIVyes but he has a different crowd who watches his videos. I like both your channel and dex. Both add their own really good stuff. People who know their way around things understand dexs stuff more, and I like your vids for when I know nothing about anything and need all the help I can get lol
Definitely the two best channels!
Never, it's just MORE good stuff!!!
Totally off topic, but have you had an experience with the Titan Engines 4.0 head?
What E-Brake cables did you use to reconnect the E-brakes. I used a ford as the jeep cables were too short.
I have a 90 mj with a d44. In 90 I think jeep changed the backing plate and due to the d44 not being a c-clip everything is different. I've seen kits but don't know how good they are, and never seen a good rear disc conversion for the mj. I would like to see that.
I believe it is any 03 - 07 Liberty should have the backing plates you need. You should be able to tell an 02 apart by the 4x4 badging under the rear cargo windows - 03+ moved it to the swing gate. Source: have had a KJ Liberty for the last 13 years
Another great video! I had my axle pass me once in my yj. It was kinda funny watching it roll past me. I was only going a few mph.
Can you please please do a video about why my front drive shaft in my xj has a bunch of play????
I have the same stuff I'm going to fit on my model 20 for my cj5 . 🤔👍 cool video.
Not sure about the aftermarket brake calipers,,, But if I remember correctly Stock Calipers are a3/8" Hex on the bleeder screws, and they have a 3/8" 24 tpi fine thread.
I don’t run dust shields on the front considering doing this on my 8.25. Soild vid
Hey Guys, a couple years ago we bought a rear brake backing plate/ disk brake bracket set as a replacement for a jeep ZJ that has rusted out backing plates, if I remember correctly they were from Crown auto, and we ordered them from Summit Racing, after doing a bit of research and comparison they
look to be aftermarket replacement Ford Explorer backing plates, that had the bolt holes ovaled out so they will bolt up to a jeep axle.
From what I could tell, probably from about a 1998 to 2003 Ford Explorer.
So for a little experiment maybe you might be interested in looking into that for yourself.
The Rear jeep caliper brackets are often ok and reusable, but the backing plates are the parts that rust out and need replacement,
But original jeep ones are not available.
Sweet thank you buddy😊
The rear brake shoes where on backwards on Justin’s rig primary shoe (big) towards the front and secondary(small) shoe towards rear will make them try to stick and grab if run backwards…….. just dealt with this on a 98 classic I bought my wife
Hi I'm looking for a zj 44 axcel assembly and what state are you in
Tennessee. I am in Illinois.
I run raybestos hybrid pads on the front to compensate for the rear disks on mine
Saw another upgrade I'd like to see done. They switch out the single diaphragm brake booster for a dual diaphragm one. They say it makes the brakes more firm.
Did mine with liberty rear. Pretty much direct just put longer studs.
Gravity bleed 100%! Dont you have to replace the master cylinder too? The check valve inside for drum brakes will hold too much pressure when the petal is released causing the pads to drag and wear out fast.
Great, something else I have to do lol! Thanks Dex!
We all have done that lol but it the true mechanics that find the left on the right and the right on the left for calipers
Will the calipers clear on a 15" rim?
If you buy a Replacement Set of Disk brake Backing plates and Brackets from Crown auto,
You definitely do not want to use the parking brake springs that come with them..
I absolutely recommend using a stock set of ZJ parking brake springs.
You sell the kits yet?
Not yet. Been busy.
Liberty had drumps til 04 I’m
Pretty sure I did a lot of work on one 02 and a
07
Enjoy it, dish gotta be a lot better
Big dent in passenger rear wheel?
The liberty works
U should market those e brake delete kits. Lol.
Hopefully you will read this and help me I messaged you on another video my 1991 4L cherokee when you floor it just falls on its face like you turned It off this list of things I've tried
Fuel pump fuel filter bypassed the resistor
Mopar cps
Mopar cam sensor in bottom disturbtor yrs back I updated it to the one that looks a flying saucer i think it's 97 and up ran fine for yrs so I just installed a new of that style checked for play/run out in the distributor shaft it's tight swappped tgecoil with a known good from a working correct jeep did a driving under a load fuel pressure test it's got 33 ish with the vac hooked to regulator and 40 unhooked still stumbles will only recover if u let off the throttle and ease into it im starting to think it's the ecu
Going to store right to get a inline noid light see what that tells us
Who the h dont want a e brake? is it even legal? its kind of like emergency brakes
That’s like putting disk brakes on a ford 9inch take Ford Explorer rear disk brakes fit right on but they said you need shim to put the axles in deeper
Need a transmission line for a 2000 Grand Cherokee fans make sure this gets to him I've been a fan for a really long time
We got a brand new set of ZJ transmission fluid cooler lines from Rock Auto a couple weeks ago for only about $22 plus shipping, and they sent them in three days.
Maybe they have the ones for your jeep also, you may want to take a look at their website
My rear brakes don’t work with stick proportion valve and spring? Anyone else have same issues? They’re working, but only rubbing rear rotors when driving, then barely applying pressure when brake pedal is pressed
My 86 jeep has liberty brakes I think 2005 to 2007
Nice 👍🏾
If you flush the brake system every 2 years, you won't have any trash build up in the brake reservoir.
Can I do this to my 05 TJ???
Get your a XJ Cherokee.
I’ve sold 94 up ZJ rear discs as a kit on a very popular XJ site for over 10 years.
I did this for myself for one main reason.
If you break an axle shaft while off roading the shaft will not fall out.
Very easy & pretty much a bolt on upgrade. Drums suck!!!!
Always film in the direction the sun is pointing, not the opposite. If you would have rotated the axel 180 facing the sun, and filmed from the direction of the sun. Would have taken care of your lighting issues. Buy a tripod
most people in comment section have never worked on a car before, certified couch car mechanic
Need info for doing TJ
Get yourself a XJ
question ive bought the main breaded brake lines noes anyone know if there is someone who sells those rear lines breaded
Nice job god bless
Day 1647 of waiting for the fuel relay rapid ticking video
Keep waiting.
You always think some one pissed off their mechanic…… after being in the xj community for a while I have realized that the pissed off mechanics name may be buddy wiser or miller lata’. These boys drank!! You never know what you’re gona find!
My $20,000 Cherokee only cost me $1,800.00 but it is NOT junk. Just ask me and I'll tell you so.
Liberty swap please!
👍👍
Am i the only one that noticed they used Wasp and Hornet spray as a penetrant lube?
👍🏻👍🏻👍🏻🇦🇺
Any video with a dog in it is better.