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Old 03-20-2012, 04:19 AM   #1
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rear axle sticks out one inch more on driver side

I recently installed the teraflex 2.5 coil lift on my 2012 JK with the Daystar 3/4" spacers on the rear to counter the extra weight from the new bumper and spare tire. I got the Billstein 5100 shocks. I also put 33 12.50/15's on. Last night I was looking at the side of the Jeep from the front and noticed the rear axle sticks out on the drivers side farther than the passenger side. I took a tape measure and took a rough measurement and the axle sticks out about 1 1/8" more on the drivers side. I measured from the fender to the sidewall of the tire. The drivers side was about 3 1/8" and the passenger side was 2". What the heck, I thought the track bar relocation bracket that came with the lift was supposed to take care of centering the axle.

Before you answer, maybe I should tell you everything I did to my new Jeep first. I installed the Warn Elite series bumber with grill guard and Warn 8000 winch. I installed the Rock Hard rear bumper with tire carrier accompanied with a spare tire matching the rest (33 12.50/15's Duratrack on the M whatever wheels).

It drives like a charm but this axle thing bothers the heck out of me to where I don't even want to drive it until I get the axle centered. I don't mind if I have to get adjustable track bars but they should tell you if you will need them and their relocation bracket does not work. If I do need to get an adjustable track bar, should I attach it to the TF relocation bracket or remove the bracket and attach it to the stock location. Also, how do you center the axles with adjustable track bars? Is there some sort of science/math that is involved?

I appreciate any response

Thank you

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Old 03-20-2012, 04:52 AM   #2
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Quote:
Originally Posted by catalinafairview View Post
I recently installed the teraflex 2.5 coil lift on my 2012 JK with the Daystar 3/4" spacers on the rear to counter the extra weight from the new bumper and spare tire.

I don't mind if I have to get adjustable track bars but they should tell you if you will need them and their relocation bracket does not work. If I do need to get an adjustable track bar, should I attach it to the TF relocation bracket or remove the bracket and attach it to the stock location. Also, how do you center the axles with adjustable track bars? Is there some sort of science/math that is involved?
Well Teraflex didnt tell you to install the 3/4" daystars so they shouldnt have to tell you. You just put a 3.25" lift on you should expect more axle shift then what TF designed. I have heard TF recomending to use the relocation bracket no mater what. It corects the geometry not centers the axles. A adjustable track bar will center the axles. But have seen alot of people not use the brackets. I would call TF and ask them, or PM the rep on this site. Instruction are included with most trackbars or search formus. Pretty easy to install. Um science not so much but you may need addition and subtraction yes. You measure each side until its centered then bolt it down.

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Old 03-20-2012, 06:05 AM   #3
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Unless the geometry is corrected the axle
Will be off center during wheel travel
If you are concerned about the 1"+ at ride
Height think about how far it's off during compression!!!
I would definitely call them
I don't think a shorter track bar will fix the problem, just a band aid
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Old 03-20-2012, 06:10 AM   #4
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Exclamation Yep...........

............ an adjustable trackbar is what you need and will correct the off-center axle

With only a 2-in spacer lift, mine was off-center almost an inch. There is no science to installing and adjusting the Adj-trackbar (I did it)

With the total lift you ended up with you may need: exhaust relocation brackets and a Front drive shaft. Check all "kbwwolf" posts on this subject
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Old 03-20-2012, 06:14 AM   #5
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Originally Posted by killerbee812 View Post
Well Teraflex didnt tell you to install the 3/4" daystars so they shouldnt have to tell you. You just put a 3.25" lift on you should expect more axle shift then what TF designed. I have heard TF recomending to use the relocation bracket no mater what. It corects the geometry not centers the axles. A adjustable track bar will center the axles. But have seen alot of people not use the brackets. I would call TF and ask them, or PM the rep on this site. Instruction are included with most trackbars or search formus. Pretty easy to install. Um science not so much but you may need addition and subtraction yes. You measure each side until its centered then bolt it down.
True to the first sentence but all I did was bring the rear end back to the new lifted height after installing the extra weight (i.e. heavy rear bumper and larger tire). I actually installed the lift before the new bumper and tire and then measured it. After installing the new bumper/tire I measured it and it was a little lower so I added the spacers to compensate the drop. Even at that, it does not make sence to me that a 3/4" spacer would move the axle 1 1/8" out on hte driver side. I did not think to check the axle when I installed just the lift. It might have been 1 1/8 out to begin with.
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Old 03-20-2012, 04:11 PM   #6
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I would call or PM Teraflex. Go over your install with them and see if you did something incorrectly. I have no doubt a adjustable bar will help this problem. I only question you blaming Teraflex after you modified their design lift. IMO they can only place recomendations on what they designed and sold you. I have no issues adding spacers. I have them myself, but i know going into that mod it will cause issues. And you have to plan on issues. Keep us updated on what you find out.
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Old 03-20-2012, 04:14 PM   #7
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My axle was shifted 3/8 w/ 2.5 lift.
centered with Tera's front TB.


1" is crazy .... Something's wrong ??
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Old 03-20-2012, 05:41 PM   #8
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Quote:
Originally Posted by kjeeper10
My axle was shifted 3/8 w/ 2.5 lift.
centered with Tera's front TB.

1" is crazy .... Something's wrong ??
You need the axle side trac arm mount, and use the top hole for the arm not the lower. Also, re loosen all control and trac arm bolts, wiggle the jeep on level concrete floor for about 2 minutes. Simulate an earthquake when you wiggle it. Tighten everything down tight to spec on all four wheels not in the air. This will correct your problem. Do not use any other braket on the frame side of the rear trac arm with the 2.5" kit. You will be good to go when you do this.
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Old 03-20-2012, 05:45 PM   #9
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The front shouldnt shift at all. You also do not require any braket frame side or axle side. If you have shifted, you have either installed an un needed braket or installed an un needed adjustable trac bar. Sucks either way. Simple is good, more goodies installed isnt good. You really should not even consider extra goodies unless your 3" or higher. But every jeep is unique
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Old 03-20-2012, 05:49 PM   #10
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Oh PS,
Inspect your frame side mounts for control arms and trac bar arms for bending or damage which can also cause shifting.
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Old 03-20-2012, 06:24 PM   #11
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Quote:
Originally Posted by pkmcd99

You need the axle side trac arm mount, and use the top hole for the arm not the lower. Also, re loosen all control and trac arm bolts, wiggle the jeep on level concrete floor for about 2 minutes. Simulate an earthquake when you wiggle it. Tighten everything down tight to spec on all four wheels not in the air. This will correct your problem. Do not use any other braket on the frame side of the rear trac arm with the 2.5" kit. You will be good to go when you do this.
Agree.... Something must be binding up if your off that much.
Were all the CA/TB bolts loosened during install?

I don't think the bracket is needed in the front with only 2.5" even with an additional 3/4 spacer.

I love the TF monster asj, TB. So easy to install/center.
Took us a few tries to figure it all out but ..
A turn of the adj sleeve and we can see the body shift left or right depending on which direction it's turned.
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Old 03-20-2012, 06:33 PM   #12
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I agree with PKMCD99 loosen everything up shake it and then retighten everything all while on the ground. I disagree regarding the statement that the front will not shift. I installed an AEV 2" spacer lift my rear shifted 1/2" to the passenger side and the front shifted 1/2" to the drivers side.
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Old 03-20-2012, 06:58 PM   #13
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Quote:
Originally Posted by basecamper
I agree with PKMCD99 loosen everything up shake it and then retighten everything all while on the ground. I disagree regarding the statement that the front will not shift. I installed an AEV 2" spacer lift my rear shifted 1/2" to the passenger side and the front shifted 1/2" to the drivers side.
If the front shifts too much, because the upper control arms location, this indicates severe frame flex and I would inspect the bushings and frame side brackets for damage. The rear is easier to shift because of the design. Good luck my friend,
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Old 03-20-2012, 07:13 PM   #14
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Quote:
Originally Posted by pkmcd99

If the front shifts too much, because the upper control arms location, this indicates severe frame flex and I would inspect the bushings and frame side brackets for damage. The rear is easier to shift because of the design. Good luck my friend,
Possible the op measured wrong.

Op- did you run a flat level up against the tire and measure to the same point each side?

He says it drives fine. With 1+ inch of shift. I highly doubt that jeep is going to drive "like a charm"
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Old 03-20-2012, 07:47 PM   #15
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Quote:
Originally Posted by basecamper View Post
I agree with PKMCD99 loosen everything up shake it and then retighten everything all while on the ground. I disagree regarding the statement that the front will not shift. I installed an AEV 2" spacer lift my rear shifted 1/2" to the passenger side and the front shifted 1/2" to the drivers side.
When I installed the AEV 2" spacer lift the driver's side front tire sticks out 5/16" more than the passenger side. In the rear, the passenger side sticks out 3/16" more than driver's. Can't see it with the naked eye so it doesn't bother me.

OP - how about a re-measurement?
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Old 03-20-2012, 08:27 PM   #16
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My rear axle has always been off about 3/8” to the passenger side since new. After a 2" BB, it's still about the same (but maybe more noticeable since you can see the edges on the tires better). I'd like it to be perfect, but can live with it until I have time to fab up a bracket.

I agree, something must be screwy on OP's rig if off by more than 1" to the DRIVERS side.
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Old 06-16-2014, 09:52 AM   #17
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Didn't want to bring up the old thread but I have the same situation except mine is only 1/2" in the rear and maybe 1/4" in the front to the driver side. It is bothering me little bit. I can't get the adjustable track bars (front and rear) until the fund comes in but do you think my jeep should be ok for awhile? Maybe 6 months to a year? I just did the lift yesterday and took me 10 hours with a buddy of mine. We went over slowly checking everything is bolted to correct torque setting and followed sub-par instruction that was provided. This forum has been very helpful though.

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