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Old 03-05-2012, 10:03 AM   #1
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TC drop for 3.25" RC lift????

i just recently installed a 3.25" RC lift on my 1999 TJ. feels like its hard to get into 2nd gear and want to pop out. also noticed some new clunking noises when at an idle. i did install the TC drop, should i remove this and see if i have these problems? not sure if i needed this with only a 3" lift.

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Old 03-05-2012, 11:30 AM   #2
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Do you have vibes when driving? Sitting at idle shouldnt bother anything that has to do with the lift.

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Old 03-05-2012, 12:43 PM   #3
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Originally Posted by jfccarpentry View Post
i just recently installed a 3.25" RC lift on my 1999 TJ. feels like its hard to get into 2nd gear and want to pop out. also noticed some new clunking noises when at an idle. i did install the TC drop, should i remove this and see if i have these problems? not sure if i needed this with only a 3" lift.
Your shifting issue is caused by the t-case drop lowering the transmission so its shift lever is more restricted where it passes through the shifter boot. You can't remove the t-case drop without causing drivetrain vibrations.

To cure the shifting issue, you can either install a SYE kit and CV driveshaft so you can get rid of the t-case drop, or move the console back a half-inch or so. That is easily done by just removing its self-tapping screws and moving it back, then drilling new holes for the self-tapping screws.

The rattle is probably caused by the transfer case shifter mechanism being a little out of kilter since you lowered the transmission/transfer case assembly with the t-case drop. The t-case shifter mechanism is mounted onto the transfer case on one side and the tub on the other. Dropping the t-case tilts the mechanism which can not only cause it to rattle but to not shift as well as well.
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Old 03-05-2012, 04:01 PM   #4
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I noticed my shifter was a little lower after the tc drop but I don't have any issues getting it to shift or have any noises
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Old 03-08-2012, 12:45 PM   #5
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I heard with this lift if you have the LJ you don't need the TC drop kit. I recently took out mine to give it a try and the vibrations died down a lot. I will get a SYE and CV in the future but this should be fine now right?
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Old 03-08-2012, 01:18 PM   #6
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I heard with this lift if you have the LJ you don't need the TC drop kit.
The Unlimited's longer wheelbase includes a longer rear driveshaft. The longer the rear driveshaft, the less it is affected by a suspension lift. An Unlimited can be lifted higher than a standard SWB TJ before it needs a t-case drop or SYE kit and CV driveshaft.

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