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Old 02-20-2012, 08:00 AM   #1
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Rear discs compatibility question

A few weeks ago converted my 98 TJ from drum to discs and had used the components from a 97 GC. I just came upon a good deal for a set of front and rear 4.56 geared axles (D30/D35) and am planning on swapping out the current ones for theses when I do the lift this or next weekend.

I want to retain the discs in the rear and instead of pulling them off my current axles I want to buy another set from the jy. I have found a 2002 GC that has the full assemblies. The only issue I see is that the calipers mount to the front of the axle and look much bigger. I also know that the 2002 has a 5 on 5 bolt pattern where as mine is a 5 on 4.5 so I know the rotors will not work.

All the other GC left in the yard have been scavenged for the parts.

Will the brackets and calipers from this 02 work on my 98?

I figure that I can recoop some of my money back by selling the stock axles and it might be a bit of an added benefit for the rear to have discs. I could also throw in the drum assemblies since I kept those from the original conversion.

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98 TJ
4.0L, 5spd, 4.25 Zone lift, Currie Anti-rock, Trutrac D30, D-locked D35 w/4.56 gears, MCE GEN I Flares, 33" Trxxus ATs, Engo 10K# winch, rear disc brake conversion.

My idea of help from the man above is a sniper on the roof.
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Old 02-20-2012, 09:20 AM   #2
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Quote:
Originally Posted by Diverdown87 View Post
A few weeks ago converted my 98 TJ from drum to discs and had used the components from a 97 GC. I just came upon a good deal for a set of front and rear 4.56 geared axles (D30/D35) and am planning on swapping out the current ones for theses when I do the lift this or next weekend.

I want to retain the discs in the rear and instead of pulling them off my current axles I want to buy another set from the jy. I have found a 2002 GC that has the full assemblies. The only issue I see is that the calipers mount to the front of the axle and look much bigger. I also know that the 2002 has a 5 on 5 bolt pattern where as mine is a 5 on 4.5 so I know the rotors will not work.

All the other GC left in the yard have been scavenged for the parts.

Will the brackets and calipers from this 02 work on my 98?

I figure that I can recoop some of my money back by selling the stock axles and it might be a bit of an added benefit for the rear to have discs. I could also throw in the drum assemblies since I kept those from the original conversion.
The only rear discs in the Grand Cherokee line that are compatible are the ones from the ZJ, the 02 is a WJ which has a different housing end bolt pattern.

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Old 02-20-2012, 10:27 AM   #3
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Quote:
Originally Posted by Black Magic Brakes View Post
The only rear discs in the Grand Cherokee line that are compatible are the ones from the ZJ, the 02 is a WJ which has a different housing end bolt pattern.
Thank you. I had a feeling that was going to be the case.
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98 TJ
4.0L, 5spd, 4.25 Zone lift, Currie Anti-rock, Trutrac D30, D-locked D35 w/4.56 gears, MCE GEN I Flares, 33" Trxxus ATs, Engo 10K# winch, rear disc brake conversion.

My idea of help from the man above is a sniper on the roof.
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Old 02-20-2012, 01:07 PM   #4
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nice i didnt even know this, im going to hit the junk yard tommaro!!, lol
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