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Does the suspension geometry change when doing a spring or spacer lift??

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Old Dec 5, 2011 | 05:45 PM
  #1  
toboles's Avatar
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From: Summerville, SC
Default Does the suspension geometry change when doing a spring or spacer lift??

Im new to the jeep building community and curious! I recently bought an 07 Sahara JKU and I also bought a Skyjacker 2.5" spring lift. No control arms, just the springs and the track bar relocation brackets. I will also be buying new shocks to go with it. I haven't put it on yet but when I was going through the stuff I started wondering about the suspension and how it was going to be affected. To what degree if any will this affect the geometry?? I dont want to screw up my baby! Also I was wondering if I needed to buy a pitman arm for the steering as well? Any advice would be greatly appriciated!! Thanks
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Old Dec 5, 2011 | 06:08 PM
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nthinuf's Avatar
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Yep, the faq's are a good place to start. Read the blurb on caster. And this video by teraflex is good to look at for the angles.
http://rides.webshots.com/video/3016...02496289IjoMUo

Anyway, with a 2.5" lift:
-The caster will be lower than stock, causing flightier handling. caster correction is nice, but not necessarily needed at that height.
-Steering correction (tb bracket w/drop pitman or a flip kit) will not be needed.
-The axles will be shifted over a bit. The concern here is whether the bracket you have raises the trackbar, (causing the angles to be off) or just relocates it to account for the lift height? I have never run a bracket so can't answer that.
-The swaybars will be angled down. This may have the unfortunate consequence of causing the swaybar to flip around backwards when flexed. (or on a lift at the shop). Longer links are cheap.
-Brake lines may be stretched. Brackets are cheap and easy to make if you need them.
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