Sye

PretorDepot

New member
I have heard a lot of talk, tons of messages and people seem to agree that a SYE is the way to go. My question is how much of an impact will it make to me? Will I really notice that big of a difference to driving around with a 4" lift and a TC drop? Just want to make sure my next "project" is the one I should do first. If not the SYE I was gonna go with a cold air intake and a 62 mm throttle body spacer. Ideas, thoughts greatly appreciated.
 

If you can drive at highway speeds with no vibration you can pass on the SYE for now . Just check your u-joints regularly because the steep driveline angle can cause them to wear quicker. The SYE is the proper way to fix the driveline angle but I've driven around without one for 2 years now no problems(4.5 lift).
 
The SYE will increase the clearance under the belly pan and increase the height of the shifters to where they were originally.

Don't forget that when doing a SYE and a CV rear driveshaft that you have to rotate the rear axle upward, until the pinion is parallel with the driveshaft. For a TJ it generally means getting adjustable upper control arms, another added expense to doing the SYE.
 
The SYE will increase the clearance under the belly pan and increase the height of the shifters to where they were originally.

Don't forget that when doing a SYE and a CV rear driveshaft that you have to rotate the rear axle upward, until the pinion is parallel with the driveshaft. For a TJ it generally means getting adjustable upper control arms, another added expense to doing the SYE.


On a 4" lift, is there a standard length that the control arms need to be for a TJ in order to be parallel? Or just make it as close as possible?
 

I've seen a few charts on the web for control arm length but I'd get a magnetic angle finder and set it yourself. I've had the best luck with the angle finder and building my own control arms for things like pinion angle, caster, etc.
 
I've seen a few charts on the web for control arm length but I'd get a magnetic angle finder and set it yourself. I've had the best luck with the angle finder and building my own control arms for things like pinion angle, caster, etc.

I thought I had seen somthing about the adjustment length that were included in diffrent kit instructions, but wasn't sure if there was a proper setup.
 
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