Calgary Jeep Association
4x4 Related Groups => Tech Talk => Topic started by: jeep420 on July 20, 2006, 08:19:48 PM
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Is there a visible way to see if I have a SYE on my jeep. I bought it already lifted with a t-case drop. My buddy (evasion1 on here) just did a spring over on his YJ and is about the same size, but his rear driveshaft where it goes into the t-case is sticking out about 3 inches where as mine is pretty much tight..... He dropped his t-case already as well.
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among other things the sye shortens the tail housing by 3 or 4 inches allowing you to run a longer driveshaft :lol: , my 89 stock tail housing looks like photo in link below, are you saying your tail housing is 3 or more inches shorter ? than the other yj, if so then I'd say yes, sye's require a longer driveshaft , does your driveshaft look like a c/v style end that uses two ujoints where it mates to t/c ?
http://www.msc-inc.ca/maclean_20050801/org231.jpg
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and your original driveshaft was one long tube because the yoke at the t/c housing slips in and out as the axle moves - but with sye the driveshaft has what looks like a two piece spline setup to allow axle movement up and down ... couldnt find a picture ...
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(http://www.4x4wire.com/jeep/reviews/aasye99/tcasesupport.jpg)
Pic from 4x4wire.com.
You can clearly see the YJ Slip yoke still attached to the driveshaft on the far right in this pic with the skidplate off.
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My bad... Now that I crawled underneith my jeep and looked at his closer, I realized I have a little 2" rubber grummet that covered some... and his doesn't! His vibrates though, thats what got us looking. Mine seems fine, but, my t-case drop is 2" and his is 1.5". Would that make much of a difference? He is gonna change it on the weekend eitherway I think!
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I'd say he doesn't have one and any serious torque on that driveshaft it will pop out of the transfer case.
A SYE will have the yoke bolted to the transfer case shaft and the driveshaft u-joints clamped to the yoke. It won't have the tube going into the transfer case which slides in and out as the suspension goes up and down. Also, with a SYE the drive shaft itself will have some sort of a slider somewhere in the middle, usually with a boot .