do i need a sye if i get a 3 inch or 3.5 inch lift for my 2000 xj

 

more than likely yes but its hard to say 100% untill you do the lift and see if there are any vibes. but i do know that newer jeeps are more prone to vibes after a lift.

 

well if i get a tc drop will that fix the vibes for a few months or so and how bad are the vibes

 

what the heck is sye im doing mine n a could days going 2 use the military base so i can use there tools and there lift.Im doing a lift using rustys 3inch lift coils n the front and s-10 leaves n the rear.

 

SYE is a slip yoke eliminator. On newer jeeps they generally need one. A tc drop will help for sure but for serious wheelin SYE is idea. Drewdertuder you likely won't need one on your jeep. I have almost 4.5" and need one on my 91 but when I was at around 2-3" didn't need one.

 

Each XJ is an individual so it is difficult to determine which will need a SYE or which will not. The newer your XJ the more likely a SYE will be needed and the same principle can be used for a T/C drop. Some may be fixed with it and some may not. The vibes are always different too. Some may be so severe that you can't drive out your driveway and some may be so mild that you can hardly feel it at any speed, while others may only be felt at a certain speed and disappear at any speed above or below that one speed.

 

where is a good place to find a sye and i dont know witch tranvercase i have i have 2 high 4 high nutral and 4low does that help its in that order

 

You have a 231 t-case.
Rubicon Express has a great deal on "hack and tap" SYE and CV driveshaft. I know a few folks running them (myself included).
The 97 and up 231 cases had a longer output shaft than their older brothers. The longer shaft acts as a lever inside the case... combine that with the increased drive shaft angles, and you end up with vibrations.
How sever depends on a rather complicated recipe of drivetrain components… ax15 vs aw4, 231 vs 242, D35 vs 8.25… some combinations do ok with small lifts, some cannot handle 1” over stock (this I know from experience).

I got my RE hack and tap conversion and driveshaft from DPGoffroad... very helpfull folks.

Good luck to you.

 

thanks u guys

 

ya got a 3.5'' on my 99 and even the 3/4'' TC drop didnt fix it all so im going to have to go with the porc sye but like everyone said each jeep is different

 

how hard is it to do a sye im not the best person in the world but i ant the worst

 

Depends on the type of SYE you purchase.

The Hack-n-Tap style: simply remove driveshaft. Cut output shaft to designated length and tap center. New mounting plate gets bolted over output shaft.

The more expensive units require removal of the output shaft housing from the TC.

Each have thier Pros and Cons.

But for the less mechanically-inclined I would suggest the Hack-n-Tap style for Up to 3.5" lifts.

 

You don't need to get a SYE for a 3-3.5" lift. Even on a 96+ XJ that has the shorter tail housing on the transfer case, you don't need to do the outrageous cost of SYE with that mild of a lift. What you will need to do is combine a 1" cross member drop kit with a set of 4 degree shims between your rear axle and leaf springs to point the pinion up a bit. This will virtually eliminate your vibes. I have that same set up with a 6" lift and no vibes. I have the older style tail housing on my 91 but, I think this will work fine for you with a 3-3.5" lift. This will get you lifted and back on the road, then start saving for your SYE.

 

It is irresponsible to tell the OP an SYE will not be needed.
At 1.5" mine "needed" an SYE... I tried the drop, combined with shim...
As several have noted, the combination of drivetrain components.
Additionally, the older style tail housing is the shorter unit that is less prone to vib's, the newer ones are not only longer, but the output shaft is longer as well.
I'm being as polite as I can, but you have given inaccurate information.