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Unread 07-28-2011, 05:48 AM   #16
1Dirtymudder
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Quote:
Originally Posted by 1stblack97ZJ View Post
Yep they are pretty awesome. Did you get the Reuglar or Double Shear?
I thought that double shear was another name for adjustable. No?

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Unread 07-28-2011, 06:05 AM   #17
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Quote:
Originally Posted by 1Dirtymudder View Post
I thought that double shear was another name for adjustable. No?
The double shear is adjustable but it is a different style. Here's a link.

Double Shear
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Unread 07-28-2011, 07:20 AM   #18
1Dirtymudder
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I got that setup for the front and it worked very well but my problem is in the back. It doesn't look like the back would accept a drop bracket like that. So, no, I didn't get a double shear for the back to answer the above question. On a side note, The contol arm on the axle side mounts to the same bracket as the lower control arm. What a PITA! to switch it out. When I get the new one, is it just a matter of lengthening it to measure the same as the old one + the amount the axle is off center or do I have to whip out the Pythagorean theorem since it forms a triangle?
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Unread 07-28-2011, 07:35 AM   #19
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Yep, the double shear link above is just for the front. If your front is centered you can measure diagonally (X) from the same fixed point until you have the same measurement,this will center your axle. You can use a straight edge or even a string line to check and see if your close.
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Unread 07-28-2011, 07:36 AM   #20
1Dirtymudder
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Does anyone think that the vibration I'm getting at 30 mph could be a result of the axle being shifted to the side? It kinda thows another angle into the pinion equation. Just a thought. What does everyone think?
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Unread 07-28-2011, 07:37 AM   #21
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Post up a few pics of your F&R pinion angles.
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Unread 07-28-2011, 07:39 AM   #22
1Dirtymudder
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Originally Posted by Virmagicus View Post
Yep, the double shear link above is just for the front. If your front is centered you can measure diagonally (X) from the same fixed point. You can use a straight edge or even a string line to check and see if your close.
I know how to figure out how far it is displaced from center. I'm just wondering how to figure out what length to adjust the new rear trackbar to make it spot on the first time.
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Unread 07-28-2011, 07:41 AM   #23
1Dirtymudder
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Post up a few pics of your F&R pinion angles.
I was thinking of doing that right before you posted. I'll be a few min.
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Unread 07-28-2011, 07:43 AM   #24
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When you take the TB off, give the body a good rack back and forth a few times. It will usually be within a 1/2". It's almost impossible to get the TB the correct length as each ZJ is a little different as far as bracketry and such. It will take a couple adjustments regardless even if you figure out the pythagorean theorem because a TB that is adjusted too short can affect lift height on one side.
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Unread 07-28-2011, 07:53 AM   #25
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Unread 07-28-2011, 07:58 AM   #26
1Dirtymudder
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Originally Posted by Virmagicus View Post
When you take the TB off, give the body a good rack back and forth a few times. It will usually be within a 1/2". It's almost impossible to get the TB the correct length as each ZJ is a little different as far as bracketry and such. It will take a couple adjustments regardless even if you figure out the pythagorean theorem because a TB that is adjusted too short can affect lift height on one side.
Good point So, center the axle then lengthen the trackbar to fit.
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Unread 07-28-2011, 08:53 AM   #27
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looks pretty close but if you see from my wonderful paint drawing your rear pinion needs to be lowered a little bit to where the pink lines are the same length. both of your uppers need to be shortened a turn or two.
the front looks good
and you should probably put new u joints in the rear if you have vibes after adjusting
the best way to be accurate is to get an angles finder and match the angle of the diff to the output on the tcase.
use the flat spot on by the drain/fill plugs on the tcase
and use 2 of the housing bolts on the diff to check it to the tcase measurment
this is the tool you need
pinion-angle.jpg  
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V8 zj at 6" . Double tri rear and true 3 link front. Stretched to 108"
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Unread 07-28-2011, 08:59 AM   #28
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Quote:
Originally Posted by 1Dirtymudder View Post
Good point So, center the axle then lengthen the trackbar to fit.
You could also use ratchet straps to dial it in where you want it and measure what you have with a tape measure. Then just apply the same measurement to the TB.

The front pinion looks good in the picture. I do agree that the rear uppers could be shortened by about a strong 1/4"?
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Unread 07-28-2011, 09:24 AM   #29
1Dirtymudder
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Thanks for everyones help So, I'll just adjust the angle at the diff. and forget about the dropkit for now. When you say "change the U joints" you just mean the things in the middle that look like this------> http://www.ironrockoffroad.com/Merch...Category_Code=


Right? Is 1310 the universal size?
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Unread 07-28-2011, 09:31 AM   #30
speedbucket
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Quote:
Originally Posted by 1Dirtymudder View Post
Thanks for everyones help So, I'll just adjust the angle at the diff. and forget about the dropkit for now. When you say "change the U joints" you just mean the things in the middle that look like this------> http://www.ironrockoffroad.com/Merch...Category_Code=


Right? Is 1310 the universal size?
yes, search on youtube if you have never done them before, its pretty simple to do with a couple different ways to go about it.
inside the caps are a bunch of little needle bearings, you have to make sure they stay in place when installing the new ones
you can use a press
youcan also use a good vise
or you can use a minisledge
you also will want to get a new strap kit for the rear yoke, about 5$ for that
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V8 zj at 6" . Double tri rear and true 3 link front. Stretched to 108"
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