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Old 04-19-2013, 06:23 AM   #1
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Another problem with my RE 3.5" Lift

So first problem was the trans skid with my automatic Rubicon hitting the driveshaft. Still haven't figured out a solution for that. Now we can not get the rear axle aligned. We can't get toe in into spec. Not really even close. This kit only has adjustable uppers. Lowers are fixed. If the lowers were adjustable I am sure we could get the toe in adjustment correct. Anyone else ever have this problem?

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Old 04-19-2013, 07:10 AM   #2
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Control arms have absolutely no relation or affect on toe in. Toe is adjusted with the tie rod only. Oh, you're working on the rear.......Why are you measuring toe on the rear axle, and how can it be off?

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Old 04-19-2013, 07:12 AM   #3
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skid plate problem i had. ended up ordering a new one that doesnt interfere with the front drive shaft. i did not have an alignment problem, but i had a shop install it :/

heres a link to the skid i ended up getting

Skid Row Offroad JP-0019 - Skid Row Offroad Engine & Transmission Skid Plate for 03-06 Jeep® Wrangler TJ & Unlimited with 4.0L - Quadratec
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Old 04-19-2013, 07:17 AM   #4
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Control arms have absolutely no relation or affect on toe in. Toe is adjusted with the tie rod only. Oh, you're working on the rear.......Why are you measuring toe on the rear axle, and how can it be off?


Picture the axle being slightly crooked. One wheel is toe'd in and one out.
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Old 04-19-2013, 07:38 AM   #5
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Quote:
Originally Posted by yoopone View Post
Control arms have absolutely no relation or affect on toe in. Toe is adjusted with the tie rod only. Oh, you're working on the rear.......Why are you measuring toe on the rear axle, and how can it be off?


Picture the axle being slightly crooked. One wheel is toe'd in and one out.

That's not toe. That's simply the axle not being square. If you want to use an alignment term, thrust angle is what is affected by the rear axle not being square. If you measure toe on the rear axle like toe is measured on a straight axle, it's near zero unless the axle housing is bent.

Now that we know what you're talking about...........
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Old 04-19-2013, 07:40 AM   #6
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Where are you measuring from/ to to square the rear axle? With fixed lowers, you're pretty much stuck where it's at. If it's not close to square with fixed lowers, you've got issues somewhere. Control arm bushings good? Has the Jeep been in an accident?
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Old 04-19-2013, 11:27 AM   #7
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If the rear axle is not square the thrust angle will be off.
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Old 04-19-2013, 12:17 PM   #8
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Quote:
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Where are you measuring from/ to to square the rear axle? With fixed lowers, you're pretty much stuck where it's at. If it's not close to square with fixed lowers, you've got issues somewhere. Control arm bushings good? Has the Jeep been in an accident?

The left rear toe is -0.22 degrees, the right toe is 0.47 degrees. The thrust angle is -0.29. Spec on thrust would be from -0.25 to 0.25 degrees.

This is the best we could get it to after two hours of adjusting. This is a 4 wheel computerized alignment machine.
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Old 04-19-2013, 04:25 PM   #9
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How are you "adjusting" the thrust angle if the lower control arms are fixed? You have some toe on the rear, which can *almost* only mean your housing isn't exactly straight.
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Old 04-19-2013, 08:56 PM   #10
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We attempted to adjust by changing the length of one upper control arm while trying not to mess up pinion angle. That obviously was not effective. This is why I am asking the forum what they think. I ordered Currie adjustable lowers today. I just bought this Jeep in the fall. Saw no damage underneath at all. Did not check alignment before I lifted it.
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Old 05-25-2013, 11:41 AM   #11
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As a follow up installed the Currie adjustable lowers today, popped it back on the alignment machine and were able to get it into adjustment perfectly. Thrust angle is in spec and consequently toe is also, even though I was "corrected" in that is not an adjustment pertaining to the rear axle. So not a fan of this RE kit. If you are spending that much money on a lift you should get one with all 4 CA's being adjustable. So I have a Skyjacker on my 97 and a RE on my Rubicon and what I have learned is save a little extra money and buy Currie or Metalcloak one of the other suspensions recommended here. More money, longer lasting, better performance, save money in the end.

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