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Old 12-18-2013, 12:13 AM   #1
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Question Stability Issues

Last week I got a two inch BDS lift, new 31.5 tires with 17 inch wheels, on my 2001 Wrangler Sahara

The ride is much better around town.

BUT...

I'm finding out that at speeds of about 65 and above, the front end gets... jumpy, if that makes sense...

Before the lift I could do 70-75 easy, now anything over 65 becomes a handful...

Is this normal for a lifted jeep??

Should I get a steering stabilizer?

Not sure what to do....

-Paul-

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Old 12-18-2013, 12:16 AM   #2
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What exactly did you change up front? What are your current toe and caster settings? Did you make any adjustments to the steering linkage after the new components were installed?

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Old 12-18-2013, 12:22 AM   #3
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I didn't install it, that's outside my skill level, I let the local 4x4 shop do all the work. I'm stopping by there tomorrow to talk with them about it...
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Old 12-18-2013, 12:25 AM   #4
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Sounds like death wobble to me. I honestly dont know a lot about it, but you could do a search on here.
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Old 12-18-2013, 12:26 AM   #5
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What is sounds like to me is when they lifted they did not align the front and set the toe in properly.
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Old 12-18-2013, 12:43 AM   #6
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Quote:
Originally Posted by ellman605 View Post
What is sounds like to me is when they lifted they did not align the front and set the toe in properly.
x2. Go to a DIFFERENT shop and get your alignment checked. Your caster angle should be (correct me if I'm wrong) about 5.5-6* with 3" of lift, so I'd look for around 6* with your lift. But with caster angle, it's a trade off with front pinion angle. Rear pinion angle should have been set up correctly. With a conventional 2 joint DS (the stock DS), the rear pinion should be parallel (no more than 3* off, 0* being ideal) from the output shaft of the tcase.

Toe in should be 1/16th of an inch. No more, no less.

Camber is not adjustable.

Go to an alignment shop and have them set your rig up on their machine. Should look like this:


And give them/you a readout like this:


Though yours will be different numbers. Do you have adjustable control arms ? If not, you'll need a cam washer for them to adjust your caster/pinion angle. Did you get an adjustable track bar ?
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Old 12-18-2013, 02:19 AM   #7
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Sounds like death wobble to me. I honestly dont know a lot about it, but you could do a search on here.
No.......not even remotely close.
Quote:
Originally Posted by ellman605 View Post
What is sounds like to me is when they lifted they did not align the front and set the toe in properly.
Correct.

The relationship between the frame, drag link, and tie rod is basic geometry. If the shop didn't properly adjust the toe, you're too far toed in at the moment. Nothing else needs to be done, nor can it be done assuming you've still got the factory control arms.
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Old 12-18-2013, 12:27 PM   #8
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Thanks for the advice,

I'm taking her in Friday morning, I talked to a shop who specializes in jeeps (as in a different shop), he's going to check it out, but he thinks they didn't set it up right.

He came highly recommended, and said he's seen this before, but a 2 inch lift shouldn't be a big deal, so they most likely did not align it correctly.

I'll report back what he finds...

-Paul-
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Old 12-18-2013, 02:06 PM   #9
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This stuff isn't rocket science. There are very few variables that changed and the main one is toe. You could actually do it yourself with about 10 minutes and a tape measure.
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Old 12-20-2013, 07:28 PM   #10
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Got the rig back from the new shop, they checked out everything, alignment was spot on, no bad bushings or joints, nothing was loose. But the stock steering stabilizer was TOAST, he showed it to me and it had been leaking, and was stained, and was pretty waisted. He put in a new Rancho, and that was the trick, on the same section of road I was able to do 75 without any issues.
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Old 12-20-2013, 10:12 PM   #11
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As long as everything else is in good shape and working properly, you should not even feel the difference between having a steering stabilizer or not.

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