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Old 02-28-2013, 05:35 PM   #1
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2" lifted coils install

Finally pulling the trigger on some 2" lifted coils. I plan on installing myself. How can I tell if ill need to relocate the track bars or if I have driveline vibrations? Might be dumb questions but I'm new to this. What is the easiest fix for drive line vibrations? What is the appropriate driveshaft angle so there are no vibes?

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Old 02-28-2013, 05:38 PM   #2
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Install the springs. Test drive. If there are driveline vibrations, add a few washers between the skid and frame. Test drive. Get an alignment.


http://www.4x4xplor.com/t-casedrop.html

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Old 02-28-2013, 05:43 PM   #3
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When you raise the Jeep the rear axle will shift to the right and no longer be centered.

As the suspension extends while you drive, it will shift more. If your right rear tire rubs, you will need to re center the axle.

Having wider tires than stock will make the issue more noticeable.

In my case, I had about an 1/8" clearance between the tire and the tub, so I centered it to avoid problems.

I don't recall how much it will shift, but you can calculate it if you want because you are basically just measuring sides of a triangle. I think it will shift around .5" or so, but I could be wrong.
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Old 02-28-2013, 05:43 PM   #4
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Thank you. What do driveline vibrations feel like? I swear I have one already from 0-5 mph or maybe it's just my tires. I can't tell.
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Old 02-28-2013, 05:45 PM   #5
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Quote:
Originally Posted by WaterDR
When you raise the Jeep the rear axle will shift to the right and no longer be centered.

As the suspension extends while you drive, it will shift more. If your right rear tire rubs, you will need to re center the axle.

Having wider tires than stock will make the issue more noticeable.

In my case, I had about an 1/8" clearance between the tire and the tub, so I centered it to avoid problems.

I don't recall how much it will shift, but you can calculate it if you want because you are basically just measuring sides of a triangle. I think it will shift around .5" or so, but I could be wrong.
Did you use a relocation bracket or adjustable trackbar?
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Old 02-28-2013, 05:47 PM   #6
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Bracket. If all you are gonna do is a 2" then that's all I would do.
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Old 02-28-2013, 05:48 PM   #7
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Quote:
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Bracket. If all you are gonna do is a 2" then that's all I would do.
Thanks. Which one did you go with?
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Old 02-28-2013, 05:52 PM   #8
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Also, why will I only need a trac bar relocation bracket in the rear and not the front as well? I've always wondered.
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Old 02-28-2013, 07:43 PM   #9
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Bump
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Old 02-28-2013, 07:43 PM   #10
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The front won't rub and is more complicated to center.
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Old 03-01-2013, 07:35 AM   #11
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I'm assuming you are replacing the shocks as well. Being slightly off centered from your 2" lift won't affect tire wear or driveablilty.You can leave it as is unless you are that anal about it. What size tires are you running? Install the lift, set your alignment, then test drive to see if any other adjustments are needed for vibes.
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Old 03-01-2013, 07:54 AM   #12
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Quote:
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I'm assuming you are replacing the shocks as well. Being slightly off centered from your 2" lift won't affect tire wear or driveablilty.You can leave it as is unless you are that anal about it. What size tires are you running? Install the lift, set your alignment, then test drive to see if any other adjustments are needed for vibes.
Yes I have the 0-2" bilstein 5100s on there currently. I am running 31x10.50's
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Old 03-01-2013, 08:36 AM   #13
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Good. Just make sure you have extended bumpstops for the increase lift. You shouldn't have any vibes with 2" but do suggest to set the toe-in alignment before test driving it.
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Old 03-01-2013, 10:04 AM   #14
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Good. Just make sure you have extended bumpstops for the increase lift. You shouldn't have any vibes with 2" but do suggest to set the toe-in alignment before test driving it.
Cool thanks

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