All front D44 brake caliper brackets equal?

jpswapmohn · Post by **jpswapmohn** » Tue Oct 03, 2017 11:27 am

I received my J20 front axle already disassembled. I have finally cleaned it up and am having it rebuilt. As I went through the parts, I have one front caliper bracket that appears to be J20 and one that looks like J10/Wagoneer. The second one is less substantial.
While I would like symmetry and all, the seller doesn’t have the other bracket. Can I use J10 or Wagoneer brackets? I don’t think the odds are in my favor of finding another J20 bracket without buying someone’s axle..

I need to get something to the shop that is rebuilding it for me soon.

Left is J20. Right appears to be J10/Wagoneer
Thanks

jpswapmohn · Post by **jpswapmohn** » Tue Oct 03, 2017 11:30 am

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jpswapmohn · Post by **jpswapmohn** » Tue Oct 03, 2017 11:31 am

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Post by **Stuka** » Tue Oct 03, 2017 5:05 pm

Those plates are different for a J20, as are the caliper brackets. J20's are 8 lug and have larger front rotors.

BCRAWLER · Post by **BCRAWLER** » Tue Oct 03, 2017 5:47 pm

Not sure if this help but this is a picture of the ones on my Chevy with a D44.6 bolt pattern.1978 era.

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jpswapmohn · Post by **jpswapmohn** » Tue Oct 03, 2017 7:15 pm

Stuka wrote:Those plates are different for a J20, as are the caliper brackets. J20's are 8 lug and have larger front rotors.

I am pretty sure the left one is the J-20 bracket. It appears that both have the same spacing between the caliper mount bolts. The left bracket is now with the axle in NC while the right one (which I assumed was the wrong one) is here in VA.

I have the JB7 upgraded calipers in the garage. If they will mount to both, does that mean both will work? I know there is a potential for lateral spacing.

Maybe I will have to go hunting for a set from a K20.
Anyone know if a set from a wagoneer will work with the 3/4 ton calipers/rotors?

Post by **Stuka** » Tue Oct 03, 2017 7:40 pm

jpswapmohn wrote:
Stuka wrote:Those plates are different for a J20, as are the caliper brackets. J20's are 8 lug and have larger front rotors.
I am pretty sure the left one is the J-20 bracket. It appears that both have the same spacing between the caliper mount bolts. The left bracket is now with the axle in NC while the right one (which I assumed was the wrong one) is here in VA.

I have the JB7 upgraded calipers in the garage. If they will mount to both, does that mean both will work? I know there is a potential for lateral spacing.

Maybe I will have to go hunting for a set from a K20.
Anyone know if a set from a wagoneer will work with the 3/4 ton calipers/rotors?

The 6 bolt pattern for the dust guard is the same I think, as you can swap 6 lug to 8 lug outers (I was referencing the brake rotors, caliper brackets, and pads above). But the J20 3/4 ton front did have larger rotors, which would require a larger shield. But maybe its not enough to matter? Its certainly worth trying.

jpswapmohn · Post by **jpswapmohn** » Tue Oct 03, 2017 8:43 pm

Well, I am not sure if someone happened upon this post and saw opportunity, but a set of J20/K20 front caliper brackets popped up on eBay. It hurt my feelings to pay the asking price, but I found no aftermarket options. Will be anxiously waiting for their delivery.

They both look like the left bracket.

candymancan · Post by **candymancan** » Tue Oct 03, 2017 9:02 pm

The right one is what my d44 on my 90 gw looks right. The left one looks notjing like mine

rocklaurence · Post by **rocklaurence** » Wed Oct 04, 2017 4:19 am

The important thing is that the 1/2 ton bracket is .5" shorter. The 3/4 ton bracket allows the use of a 1" larger rotor. I dont think a 1/2 ton bracket will allow you to run the larger rotor.

Post by **fulsizjeep** » Wed Oct 04, 2017 4:55 am

rocklaurence wrote:The important thing is that the 1/2 ton bracket is .5" shorter. The 3/4 ton bracket allows the use of a 1" larger rotor. I dont think a 1/2 ton bracket will allow you to run the larger rotor.

bingo!

Post by **Stuka** » Wed Oct 04, 2017 6:39 am

rocklaurence wrote:The important thing is that the 1/2 ton bracket is .5" shorter. The 3/4 ton bracket allows the use of a 1" larger rotor. I dont think a 1/2 ton bracket will allow you to run the larger rotor.

I figured somebody would know the exact size difference. I knew they were larger, just wasn't sure how much.

jpswapmohn · Post by **jpswapmohn** » Wed Oct 04, 2017 8:27 pm

I have found 3/4 ton brackets. I would never have guessed that they were in such demand. I may end up with a second set (had multiple leads out at same time..)

derf · Post by **derf** » Wed Oct 11, 2017 12:42 pm

FWIW, I installed Chevy JB7 brakes on the stock J20 brackets and everything went together just fine.

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