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Unread 12-26-2008, 09:46 PM   #1
grebva3
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Best Rear drum to disc brake conversion TJ

I want to do the drum to disc brake conversion and wanted to hear from people who have done the conversion. What kit do y'all recomend and some do's and don'ts from experience is greatful. Thanks for any input.

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Unread 12-26-2008, 10:10 PM   #2
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i just upgraded axles, lol
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Unread 12-26-2008, 10:13 PM   #3
bigchevyman24
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I have seen lots of people get the rear discs off cherokees. You should be able to get them pretty cheap from a junk yard and they bolt right on. Make sure it's off the same axle, though(D35 vs D44). You just have to change out brake cables, I think. Try a search on that. Hope this helps
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Unread 12-26-2008, 10:20 PM   #4
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Quote:
Originally Posted by bigchevyman24 View Post
I have seen lots of people get the rear discs off cherokees. You should be able to get them pretty cheap from a junk yard and they bolt right on. Make sure it's off the same axle, though(D35 vs D44). You just have to change out brake cables, I think. Try a search on that. Hope this helps
What XJ had rear discs that bolted up to a TJ rear axle?

BTW- the housing end bolt pattern on the TJ is shared between the D-44, D-35, the XJ 8.25, both ZJ rear axles, and the Liberty disc backing plates.

BTW- have you actually done this?
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Unread 01-30-2009, 07:56 AM   #5
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I also want to do this conversion ... how did you do it
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Unread 01-30-2009, 08:00 AM   #6
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i think mrblaine dies a little inside everytime someone incorrectly recommends anything brake related
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Unread 01-30-2009, 08:45 AM   #7
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you want to do the zj disc brake swap. I pulled mine off of a zj d35, it is a pretty simple swap to a d44, you just need to get the retainer plate from a rubicon 44 from a jeep dealership (got mine for $15).

heres the link to stu-olsons write up
http://stu-offroad.com/suspension/d44brake/bc-1.htm

you can also swap from an explorer as well, just as simple
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Unread 02-11-2009, 05:44 PM   #8
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you want to do the zj disc brake swap. I pulled mine off of a zj d35, it is a pretty simple swap to a d44, you just need to get the retainer plate from a rubicon 44 from a jeep dealership (got mine for $15).

heres the link to stu-olsons write up
http://stu-offroad.com/suspension/d44brake/bc-1.htm

you can also swap from an explorer as well, just as simple
I'm in the process of doing it myself but it's not as easy as some make it out to be a simple "bolt-on swap". Removing the discs off the ZJ takes quite a bit of work. Took me 3 hrs to get them off a ZJ at a junkyard.

Then I had to sand them down with a wire brush and clean the calipers up, (mine were pretty rusted) which took another 2hrs

I had to purchase a new spring, clip, hardware kit and install it on the new e-brake shoes. The original ones were toast

I also had to hollow out the ZJ plate to let the shaft bearing pass through, add another hour. You also need to remove the bearings and re-press them with the new TJ bracket. 2 hrs.

Even after all the labor I've been putting into it, I'm still happy I've saved about 400 bucks. I'm getting it done little by little at work, and I'm at the bearing press part of the job. Yours might go a bit easier if you didnt have to replace most of the brake components like me. All I really used was the caliper brackets, dust shield, and calipers.
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Unread 02-11-2009, 05:52 PM   #9
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I used the Tera rear disk brake conversion kit which worked very well but don't convert to rear disk brakes if you're after improved braking. If your rear drums are operating ok, you won't notice any braking improvement from converting to rear disks in 99% of the time. It's the front brakes where if you do something like the Vanco Big Brake kit will produce a dramatic braking improvement. If you have big tires and your braking sucks as a result of them, I'd save and do the Vanco front brake kit where you'll get a dramatic braking performance improvement for your $$$.
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Unread 02-11-2009, 06:01 PM   #10
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I used the Tera rear disk brake conversion kit which worked very well but don't convert to rear disk brakes if you're after improved braking. If your rear drums are operating ok, you won't notice any braking improvement from converting to rear disks in 99% of the time. It's the front brakes where if you do something like the Vanco Big Brake kit will produce a dramatic braking improvement. If you have big tires and your braking sucks as a result of them, I'd save and do the Vanco front brake kit where you'll get a dramatic braking performance improvement for your $$$.
I got mine because I got a brand new built 44 without brakes ready to bolt up. Might as well do it now while I wait to have time for the install. Mine might have an improvement over my never-adjusted drums I have now, but not a big difference.


I'm still $400 cheaper than the Teraflex kit.
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Unread 03-20-2009, 11:32 AM   #11
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why wouldnt putting discs in the back help with braking with bigger tires
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Unread 03-20-2009, 11:44 AM   #12
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no xj had disc. they would have to be from a zj
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Unread 03-20-2009, 11:56 AM   #13
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why wouldnt putting discs in the back help with braking with bigger tires
Most of the stopping power is coming from the front. The backs don't add much.
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Unread 03-20-2009, 12:12 PM   #14
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Quote:
Originally Posted by Jerry Bransford View Post
I used the Tera rear disk brake conversion kit which worked very well but don't convert to rear disk brakes if you're after improved braking. If your rear drums are operating ok, you won't notice any braking improvement from converting to rear disks in 99% of the time. It's the front brakes where if you do something like the Vanco Big Brake kit will produce a dramatic braking improvement. If you have big tires and your braking sucks as a result of them, I'd save and do the Vanco front brake kit where you'll get a dramatic braking performance improvement for your $$$.
Jerry i know that disks in rear wont help much but what i dont understand is why do the swap if you know they dont do much?
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Unread 03-20-2009, 12:31 PM   #15
Jerry Bransford
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Jerry i know that disks in rear wont help much but what i dont understand is why do the swap if you know they dont do much?
Maybe the drums are shot and need replacing anyway, and it's easier to replace disk pads and perform general maintenance on disk brakes than on drum brakes. Braking-wise, there's not really much difference in their braking performance when the drum brakes are working properly. Why some report better braking after replacing their drums with disks is that, most likely at least, their drum brakes were so far out of adjustment or just not functioning properly and the new disk brakes just made the rear brakes start working again. Drum brakes can actually stop very well, they just don't have the fade resistance and self-cleaning properties that disks do, plus they need regular adjustments.
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