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Thread: t-case drop

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    Default t-case drop

    has anyone ever lowered a t-case due to a lift? i just put 32's on my xj and it has a 3.5 RE lift. i was running 31's but now that i've put 32's on i'm getting a bad vibration when i'm on the throttle. i'm thinkin it could be the angles on the driveshaft. any suggestions would be great! thanks

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    Land Squid Jeffb_79's Avatar
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    t case drop is a bandaid, but should work. the reason being, you just spent a lot of money to give yourself more clearance underneath, lowering your t-case is going to take away from the clearance you gained.
    a 1" mml may help out a bit. that lifts the motor and in turn, angles your t case down a bit in the rear.
    best bet is to do a sye and cv drive shaft and set your pinion angle correctly.

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    Senior Member HillBillE's Avatar
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    I agree with Jeff b.

    Did the vibes start after getting new tires?

    I guess what I'm asking is, did it vibrate after the lift with the 31's?

    Or only after going to the 32's?


    The jump in tires wouldn't change the drive line angles, so the vibe may be in the tires themselves.

    But it could also be, that it was there, but not as noticable with the 31's


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    Junior Member PC1's Avatar
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    The T Case drop will probably fix the vibration you have, they usually do. There are other ways to fix it though, like new driveshaft replacements and things like that. Really just depends on the cash flow you have bud. T Case drops are a common asset in most lifts over 3 inches just to readjust the angles so they can not be all bad. So like I said, there are other ways to fix it, if you need help talk to the local truck shop or wait for more replies on here
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    Bobble Head Jeeper trailsnail's Avatar
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    I would check out the tires as well. 32's aren't that extreme. If you plan on going bigger on the tires, it may also be time to look into an SYE and CV drive shaft. This way, when you have more money for bigger meat, you are almost there.
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    i don't think it's the tires because the vibration goes away when i push in the clutch or let off the throttle. i understand i need an sye but i don't have the cash or the know how to do that. i don't plan on goin any bigger any time soon. i want bigger axles and a bigger lift before i do any of that.

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    Senior Member cavjeeper's Avatar
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    Quote Originally Posted by younggun98 View Post
    i don't think it's the tires because the vibration goes away when i push in the clutch or let off the throttle. i understand i need an sye but i don't have the cash or the know how to do that. i don't plan on goin any bigger any time soon. i want bigger axles and a bigger lift before i do any of that.
    than it sounds like you have made up your mind however like everyone else has already stated its only a band aid and robs you of the gained clearance you got from the lift
    beer makes the world go around.... thats why it leans a little

    Quote Originally Posted by trailsnail View Post
    Wow, I really like this thread, it's flaming retarded, lol.
    05 TJ, Red, auto
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    oh and love the sig cavjeeper
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    what hillbille said. tire size will not affect your pinion angle. try the RE sping perch angle wedges first, i'm suprised that RE didn't add that to your kit.

    the drop transfer case pucks are junk. unless you like to re-torque after wheeling.

    a SYE and CV drive shaft are the way to go, problem solved.

    did you get the add a leaf or new leaf packs?

    my new 2.5 lift was more like 3.5 when it was new, but all leaf springs sag over time. the cheap fix is angle wedges, check your vehicle on a flat surface with this. this is for TJ control arms but can be used in theory with wedges:
    http://www.stu-offroad.com/axle/pinion/pinion-1.htm

    fix with this:
    http://www.rubiconexpress.com/Builde...px?folder=BPDS

    here is another thing to look at:
    http://www.naxja.org/forum/showthread.php?t=992691

    hope this helps, the last thing you want is to have your rear drive shaft u-joint fail and pole vault in the road at highway speeds.

    check your rear drive shaft for loose u-joints, thats the first sign. check it after driving a couple miles, if its hot to the touch its bad. then again it could be in the front...

    hope this helps,

    casey

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