I have a 4.5 inch lift ready to go on my cherokee, but, I also have some 1.5 inch spacers, and 1 inch blocks Id liekt o include, will I be pushing my luck with the driveshaft length? Also, if Its too much lift, can I just stretch my driveshaft? Found a local shop thatll do both the cherokee and my wrangler for 150 lengthened and balanced.
187728
The length of the driveshaft isn't the issue, as much as the angle of the driveshaft. With the 97 model, you will be very lucky to not need the SYE with 4.5" of lift. You will at the least need a transfer case drop with the 4.5" lift, and deffinately need the SYE if you add the blocks and spacers.
I just put 7" of lift and 35's on my 95 cherokee 2 door. D35/AX15/231 with a 1"TC drop combo. i'm using my stock driveshaft with no vibes. I had it up to 70 today without any issues. I am working on swapping my rear axle now, so we'll see what I need after it's done. I'll put a SYE on it and get rid of the TC drop after I get that done. I have heard the newer models are more prone to vibes though...
The 5 speed, and d35 use a longer driveshaft, than the auto and 8.25. That means you can go higher without vibes. But some of the newer ones will have vibes with a budget boost.
My 97' with 4.5" of lift doesn't have a single vibration problem related to the driveshaft angle. I have a 1" t-case drop on my crossmember, but nothing other than that. I think it's kind of the luck of the draw. I'm planning on upping the lift sometime in the future and will be doing an SYE prior to doing that, but I'm fairly happy with it now.
Well I have just under 3" in the back and I get some vibes with some nasty noises when I let off the gas between 25 and 35mph. I am trying to put together some funds to buy a SYE and then a junkyard front driveshaft.
Auto/8.25 combo
Auto/8.25 combo
i just put on a rustys 4.5 and got every bit of 6in and i was about to need a drop pitman arm and a sye but they sayed that after a "relitivly short time" it will break in and level out. im also using a makeshift tc drop kit.
its been a day so far and the vibrations are going away and the stearing is getting better so i guess it just takes a wile.
if you plan on going over 4.5 you might just jeed one not sure though.
its been a day so far and the vibrations are going away and the stearing is getting better so i guess it just takes a wile.
if you plan on going over 4.5 you might just jeed one not sure though.
I ran mine without one with a 3.5" lift and 32"s. It was fine for a few months then started to vibrate like crazy. Do yourself and your jeep a favor and install an SYE when you install your lift. It will be worth the extra hassle and you'll already have all your tools out. Once you have the t-case apart and everything in front of you its pretty self explanatory.
forget about tc drops ur just gona bash up ur crossmember on rocks nd stuff.. do a sye from the start nd be done with it. also with a tc drop u usually run into problems with putting on a tc skid plate and even if u dont feel or hear the vibes there still could be minor ones under ur jeep, minor vibes or big ones they all wear out ur ujoints and u will probly end up bending ur tc output shaft. y lower the the centermost part of ur jeep wen u just put a lift on it? makes no sense.. i had a tc drop for a little while on and it was the stupidest thing i had on the jeep i couldnt wait to take it off and put on a sye
ive found that with the pre 96 model transmisions...they used a longer tailshaft on the transmission, so it keep the vibrations of the rear shaft at bay when you were riding...i have a 95, 6.5 inchs of lift and no sye....anddd there really is not a need for it...but its a good idea....with the 96-01 models the slip yoke is more exposed...without support from the longer tailshaft...it makes for a good vibration....
but this is just my opinion....
but this is just my opinion....
it depends on your definition of HAVE to. i feel that the added stress of the increase in height is enough to need an SYE. at 4.5" i had a TC drop and no vibes but i still got an SYE because now i know my drivetrain will last that much longer and i got my 1" of ground clearance back. some people that have 2" BB on 97+ XJ experience vibes, telling me that an SYE is needed, even at 2". thats just my $.02
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