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Old 02-19-2013, 11:40 AM   #1
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Axle Wrap?

Anyone know about the axel wrap and how to fix it? My 98' TJ has it and I'm not exactly sure what to do.

I get noise apon acceleration. I don't think it has gotten any worse, but regardless it can't be good.

Any ideas? Thanks.

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Old 02-19-2013, 11:40 AM   #2
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Also, I have coil springs.

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Old 02-19-2013, 11:42 AM   #3
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TJ's dont suffer from axle wrap unless something is really f-d up in your suspension. check for damaged bushings, broken control arms and control arm mounts, etc.

the problem could be a worn u-joint, poor pinion angle alignment, or driveline vibes due to needing a DC driveshaft.

read this:
What is a CV shaft and why do I want one? - JeepForum.com
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Old 02-19-2013, 11:59 AM   #4
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Thanks for link, I like whe graphics you had on there! I'm not too knowledgable, but I'm almost positive it's axle wrap.

Maybe I'll try to post a video so you can what it sounds like.
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Old 02-19-2013, 12:00 PM   #5
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If the axle is really twisting, then your should look at the bushings for your control arms.
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Old 02-19-2013, 12:28 PM   #6
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Considering the control arms are there to prevent rotation about the axle's long axis, wouldn't it make sense to check the bushings? The severity of wrap is a direct function of the amount of deflection or movement at the bushings.
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Old 02-21-2013, 02:38 PM   #7
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Quote:
Originally Posted by UnlimitedLJ04 View Post
TJ's dont suffer from axle wrap unless something is really f-d up in your suspension. check for damaged bushings, broken control arms and control arm mounts, etc.

the problem could be a worn u-joint, poor pinion angle alignment, or driveline vibes due to needing a DC driveshaft.

read this:
What is a CV shaft and why do I want one? - JeepForum.com
I'm slowly starting to understand my problem. I'm not a mechanic by any means, my dad is though so bare with me.

I believe the noise is coming from my drive shaft being angled to much. Would downsizing from 35" tires to 33" tires help do you think?
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Old 02-21-2013, 02:45 PM   #8
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Quote:
Originally Posted by Dan216 View Post

I believe the noise is coming from my drive shaft being angled to much. Would downsizing from 35" tires to 33" tires help do you think?
What does the size of the tire have to do with the angle of the drive shaft?

Think about this before answering.
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Old 02-21-2013, 02:47 PM   #9
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Quote:
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What does the size of the tire have to do with the angle of the drive shaft?

Think about this before answering.
Hmm.. It's the lift that has to do with the angle of the drive shaft right?
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Old 02-21-2013, 03:15 PM   #10
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Hmm.. It's the lift that has to do with the angle of the drive shaft right?
The drive shaft is between the axle and transfer case. The transfer case is attached to the frame via the trans crossmember/skid plate. The relationship between the frame and axles are defined by the springs between them. The only way to change the vertical orientation of the t-case relative to the axle is with longer/stiffer springs or a higher crossmember. The diameter of the tire doesn't have any effect on the orientation between the t-case and axle. The entire Jeep raises up or lowers down by the change in radius between the old and new tires.

Break things down like that and it doesn't matter if you're 'mechanically inclinded' or not. It'll be simple regardless.
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Old 02-21-2013, 03:23 PM   #11
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Thanks Imped, my dad's health seems to be going down the crapper so I'm trying to learn this stuff.

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