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Old 02-12-2012, 12:11 PM   #1
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When do ypu need a sye?

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Old 02-12-2012, 12:14 PM   #2
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When you have driveline vibes resulting from too steep of a driveshaft angle. Usually results from anywhere from 2.5-3.5 inches of suspension lift and greater. Depends on the jeep. You will need the sye cv driveshaft and adjustable rear control arms to adjust the pinion angle.

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Old 02-12-2012, 12:40 PM   #3
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I am hoping to get away with no SYE after I install my 3" Zone lift. I will use the supplied TC drop to keep me from getting the vibes (hopefully). Next project will be the SYE install and TC drop removal. I want to do a SYE immediately but the lack of mad money prevents this now.
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Old 02-12-2012, 02:36 PM   #4
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Quote:
Originally Posted by siafu
I am hoping to get away with no SYE after I install my 3" Zone lift. I will use the supplied TC drop to keep me from getting the vibes (hopefully). Next project will be the SYE install and TC drop removal. I want to do a SYE immediately but the lack of mad money prevents this now.
I feel ya brother. 3 inches isn't that crazy IMO.
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Old 02-12-2012, 02:40 PM   #5
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For a standard Wrangler TJ, 4" of suspension lift height is generally the height when you really need to add a SYE and CV driveshaft. That height becomes more like 5" to 6" with an Unlimited since it has a longer rear driveshaft that is not affected by suspension lift height as much.
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Old 02-12-2012, 02:47 PM   #6
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I have close to 3" spring lift (2 1/2" but actually got a bit over 3"). Used the TC drop for awhile, never tried it with out one. Then wanted bigger tires. Install a 1 1/4" BL and a 1" MML. Removed the TC drop with no vibes up to 80 MPH (didn't want to go any faster than that). Now running 33"s.
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Old 02-12-2012, 04:25 PM   #7
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Quote:
Originally Posted by OKLAHOMA_TJ View Post
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read thread below:
What is a CV shaft and why do I want one? - JeepForum.com

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