Do you really need a new driveshaft for a TJ with 4 inches of Lift? - JeepForum.com

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post #1 of 57 Old 06-06-2010, 02:00 PM Thread Starter
Smitty98TJ
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Do you really need a new driveshaft for a TJ with 4 inches of Lift?

I am about to get a lift kit for my 98 tj sport, i hear a lot that you have to get a new driveshaft with 4 inches and over of lift, is this true, i wont be doing much offroading, just a little bit of muding here and there.

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post #2 of 57 Old 06-06-2010, 02:06 PM
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Yup. At the VERY least, you need to be able to rotate your rear axle for proper pinion angle meaning you need adjustable upper arms at a minimum, and IMHO, an SYE is an absolute must for any lifted TJ. (Because you can't rotate the drivetrain down to get matching angles on the U-joints, an SYE is helpful.)

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post #3 of 57 Old 06-06-2010, 02:07 PM
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Every TJ is different, but the DS on a TJ is already short. You will be at the threshold of the working limit for the u-joints. You might get away with a motor mount lift, low profile transmission mount, and a transfer case drop to prevent you from getting vibes.

Why do you want a 4" lift? What are your plans? There is a lot that goes into a 4" lift to get it done right, and if you aren't willing to do a sye, I wonder if you are willing to get the rest of the necessary things done.

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post #4 of 57 Old 06-06-2010, 02:08 PM
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It's not about the "abuse" a shaft takes when it's off-road, it's about driveline angles and their effects on universal joints.

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post #5 of 57 Old 06-06-2010, 02:12 PM
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I never have and never had any problems.I always did a MML and a slight t case drop to get rid of all vibes.You can do a 3" lift and 1" BL and run 35's.I've done that too.4" lift and 33's.
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post #6 of 57 Old 06-06-2010, 02:24 PM Thread Starter
Smitty98TJ
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What is the most amount of lift that i could get without doing anything major to the drivetrain? I am in high school so i'm trying to make my tj look good without spending to much money lol, just trying to spend enough for a lift, rims, and tires.
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post #7 of 57 Old 06-06-2010, 02:25 PM
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Quote:
Originally Posted by Smitty98TJ View Post
What is the most amount of lift that i could get without doing anything major to the drivetrain? I am in high school so i'm trying to make my tj look good without spending to much money lol, just trying to spend enough for a lift, rims, and tires.
You could do 2-3" suspension lift and a 1.25" BL for 33's.
2" BB and 1" BL here with 33's.
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post #8 of 57 Old 06-06-2010, 02:28 PM
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MCE Fenders (Modern Classic Enterprises - $160)
33" Goodyear Wrangler Duratrac (high quality, long lasting, quiet, aggressive, pretty cheap tires)
Maybe a small 2" lift or 2" lift and a 1" body lift.

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post #9 of 57 Old 06-06-2010, 02:29 PM Thread Starter
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Alright thanks, are the rough country lift kits any good?
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post #10 of 57 Old 06-06-2010, 02:34 PM
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These are the MCE Fenders

[Edit by Jerry Bransford: ]

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post #11 of 57 Old 06-06-2010, 02:37 PM
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post #12 of 57 Old 06-06-2010, 02:39 PM
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Quote:
Originally Posted by Smitty98TJ View Post
Alright, do you have the rough country lift kit?
I had the RC 3.25" kit(2.5" springs/3/4" spacers) with 1" BL and 35's.
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post #13 of 57 Old 06-06-2010, 02:41 PM
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post #14 of 57 Old 06-06-2010, 02:47 PM Thread Starter
Smitty98TJ
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So i take it that it is a good lift, just not the shocks. What shocks would be best? What brand would you guys suggest on a 2.5 or 3 inch lift?
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post #15 of 57 Old 06-06-2010, 02:49 PM
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Quote:
Originally Posted by Smitty98TJ View Post
So i take it that it is a good lift, just not the shocks. What shocks would be best? What brand would you guys suggest on a 2.5 or 3 inch lift?
For every 1 person who doesn't like the shocks,there are 10 that say they're as good as stock or better.Mine rode just fine.
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