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Old 06-23-2014, 09:48 PM   #1
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Rear Springs Bowing w/Lift

After a little over a year of riding around in an AEV 2.5" lift, I just noticed that my rear springs are bowed.

I've searched forums and the net about this topic and didn't find anything about this written within the past year. Lots of posts about lifts, but I didn't see any current posts about rear springs bowing after a lift install. Seems kinda weird to me.

So what's the best way to tackle this issue, or is it really an issue? I'd like to fix it, because I'd like to add some air bags and need the springs as straight as possible.

I've read about either using correction wedges or grinding off the factory perches and re-welding them at the correct angle (hoping you match the angle on both sides).

So what's the best fix? Straightening out the springs will obviously gain me more height (something I don't need), but will installing wedges gain more height than grinding off and re-welding the factory perches?

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Old 06-23-2014, 10:52 PM   #2
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That's not common with AEV's lift at all. Especially the 2,5" ?
Can I see pics ?

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Old 06-23-2014, 11:29 PM   #3
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You shouldn't need could wedges with a 2.5" lift.

Who installed the lift?
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Old 06-24-2014, 09:14 AM   #4
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Grinding and welding is more trouble than just replacing the bad coils with new ones but I echo others by saying it's the first I've heard of it happening with AEVs stuff. Something else is more likely the trigger.

Pics?
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Old 06-24-2014, 09:54 AM   #5
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The axle does tilt up with height. more running CA's for pinion angle.
AEV coils average 3" front and 2" rear.
2" is not going to be noticeable or cause the coils to bow.
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Old 06-24-2014, 10:25 AM   #6
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I found out when I put my Teraflex leveling kit that just because the rear springs aren't indexed like the front ones, they still have a right and wrong way to place them. I ended up having to pull the rear apart after to fix a bowed spring. I indexed the rear one where the beginning of the spring is at the 4 o'clock position. (if 12 o'clock is toward the front of the Jeep) I had it on where it was in the 2 o'clock and it bowed really bad toward the back.
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Old 06-24-2014, 07:16 PM   #7
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Hey guys, I'm sorry for responding so late, but work has been eating me up. Ok, I just went out and took a couple of pics. I don't know if the bow I'm looking at is anything to worry about, but the springs aren't straight up and down. The shop that installed my lift is called Screamin Lizard Customs. They're in Bedford, TX and are part of the Grubbs Nissan dealership. They specialize in AEV and do a lot of Jeep mods...they even installed my 4:56 gears....just a really good shop. I tried calling them the other day and got put on hold and couldn't wait, so I hung up. I plan on calling back tomorrow. Anyway, here's some pictures. They're prob not the best of pics, but it's harder than I thought to take good pics of rear springs!!!
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Old 06-24-2014, 07:25 PM   #8
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I've seen worse. How are they oriented (asked above) ?
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Old 06-24-2014, 07:30 PM   #9
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Quote:
Originally Posted by kjeeper10 View Post
I've seen worse. How are they oriented (asked above) ?
Indexed, meaning the bottom of the spring, right? The ends of the springs are both pointing at 9:00. (Front of the jeep being 12:00)
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Old 06-24-2014, 08:20 PM   #10
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Yes .. Spring wedges would help. I ran them with TF 2,5's
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Old 06-25-2014, 05:56 AM   #11
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Mine are so much worse. Looks like a wedge would make them perfect.
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Old 06-25-2014, 08:21 AM   #12
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Quote:
Originally Posted by kjeeper10 View Post
Yes .. Spring wedges would help. I ran them with TF 2,5's
Can you still use the tf spring retainers with the wedges?
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Old 06-25-2014, 08:26 AM   #13
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Rock Krawler has a cure for that common problem, cut off the lower spring bucket and weld on their mounts to the axle. No more arched spring
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Old 06-25-2014, 08:43 AM   #14
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Quote:
Originally Posted by JPi1 View Post
Rock Krawler has a cure for that common problem, cut off the lower spring bucket and weld on their mounts to the axle. No more arched spring
That would be the ideal way. Doesn't somebody make adjustable perches . JKS ?
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Old 06-25-2014, 08:47 AM   #15
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Quote:
Originally Posted by monte417 View Post
Can you still use the tf spring retainers with the wedges?
I forget.. It's a plate, bolt and nut right ?
Iirc .. The wedge sits below the bump. I'm thinking yes but could be wrong.
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Old 06-25-2014, 09:59 PM   #16
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I think I'm going with the wedges. I just hope they don't cause the rear to gain so much lift that it causes the front to nose dive.
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Old 06-26-2014, 07:49 AM   #17
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I think I'm going with the wedges. I just hope they don't cause the rear to gain so much lift that it causes the front to nose dive.
It's not even noticeable. Maybe 3/8 if that.
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Old 06-28-2014, 12:14 AM   #18
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I used TNT brackets, raised my rear up about an inch so I ordered new front coils but it does ride much better now!

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