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Cherokee Rear Disc Conversion

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smokyburnout

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  • Joined: Sat Feb 25, 2012 7:44 pm

Cherokee Rear Disc Conversion

PostThu Apr 19, 2012 8:05 pm

I've finally worked on something interesting enough to share it here!

This Jeep was my first car, and I handed over the keys to my brother a few years ago but I still do the work on it. The rear brakes were giving him trouble again last month, so we decided I would make the drums go away.

I had seen the Teraflex rear disc brake conversion kit in a catalog years ago, but I had also heard of people adapting disc brake systems from other cars. After extensive Googling, I found that Liberty rear brakes can be bolted on with no major modifications. The local Jeep specialist junkyard was unhelpful (as always), and nobody else around seemed to have a Liberty in the yard, but it turns out you can order all the necessary Liberty parts for less than the price of the kit.

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Due to my research not being quite extensive enough, miscommunications, and inventory issues, there were three weeks between placing my first orders and collecting all the necessary parts for this group photo.

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There was an online Mopar dealer who sold me the "adapters" (caliper brackets, parking drum backing plates, and parking brake all in one pre-assembled package) for just $100, but they also did this to the box and asked if I wanted to pay $450 for the hose-and-pre-bent-line assembly that superceded the hose I ordered. Probably wouldn't shop again.

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Somehow, this is only the first time I've ever opened a diff. The internet told me my afternoon would be ruined if I broke the bolt that holds in the cross shaft pin so I took my sweet time here.

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Pulling the axle shaft then took no time at all!

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The internet also told me that I needed to replace these studs. I forgot this when I placed my online dealer order, so I had to deal with the local Chrysler/Dodge/Jeep store. I came armed with part numbers from the internet. The first parts guy told me my numbers were superceded, and proceeded to order me parts that turned out to be control arm bolts when they came in a week later. The next parts guy got me the right ones, but it took yet another week. Kind of annoying when you can't give them a VIN because the Liberty in question is imaginary.

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It does all bolt right up, just like the internet said it would. The next steps were to fill the diff, make new brake lines, and adapt the parking brake cables, but my wrenching partner had left for the day so there was nobody to take pictures. It stops very well, and very quietly now!

I did the math today, and doing it this way turned out to be all of $20 cheaper than just ordering the kit from Teraflex! The savings would be even greater if I had ordered the studs from an online dealer or if Teraflex weren't currently offering free shipping (Quadratec charges $60 to ship the same kit).
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pj134

  • Posts: 265
  • Joined: Fri Feb 24, 2012 8:45 am
  • Location: Near Philadelphia

Re: Cherokee Rear Disc Conversion

PostFri Apr 20, 2012 5:30 am

Err, depending on weight if a shipping charge from Quadratec ever seems very high, let me know. I live a half hour away so I could always check out some rates independently.
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Thrashy

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  • Location: KCMO

Re: Cherokee Rear Disc Conversion

PostFri Apr 20, 2012 10:43 am

Kind of annoying when you can't give them a VIN because the Liberty in question is imaginary.


Truth. I was trying to source a wiper switch with a variable-intermittent setting for my MX-5 and quickly gave up on explaining the process to the junkyyard. Yes, I need a wiper stalk from a Mazda 6. No, I don't have a VIN. No, I don't need a parts compatibility check. Yes, that's the right year and model. Will you take my money now, please? :roll:
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Stu_Rock

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  • Joined: Mon Feb 27, 2012 5:34 pm
  • Location: near Redwood City, Calif.

Re: Cherokee Rear Disc Conversion

PostFri Apr 20, 2012 11:48 am

Nice work! I think figuring out parts interchangeability is one of the most satisfying processes in working on cars, and brake upgrades are one of the most rewarding things you can do with that information.
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smokyburnout

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Re: Cherokee Rear Disc Conversion

PostFri Apr 20, 2012 3:47 pm

Stu_Rock wrote:Nice work! I think figuring out parts interchangeability is one of the most satisfying processes in working on cars, and brake upgrades are one of the most rewarding things you can do with that information.

Agreed. My 240D is full of S-Class parts. VENTED front discs were an upgrade!
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Stu_Rock

  • Posts: 77
  • Joined: Mon Feb 27, 2012 5:34 pm
  • Location: near Redwood City, Calif.

Re: Cherokee Rear Disc Conversion

PostFri Apr 20, 2012 5:06 pm

smokyburnout wrote:Agreed. My 240D is full of S-Class parts. VENTED front discs were an upgrade!
I also did the solid to vented upgrade on my 505. There's no improvement on the first hard stop, but the second one is much better!


Also of note, dual-piston F-body Camaro front brakes will fit on large GM FWD cars. That swap is totally worth it.

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