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Old 09-15-2011, 09:40 PM   #1
rda616's Avatar
Join Date: Apr 2011
Location: Allegan MI
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shopping for jku and lift info

I have a few questions about jk lifts and jk's in general . I am a tj guy now and will never part with my tj, but with an 18 month old it would be nice to have four doors and the old ram is on her last winter . I am planing on ome springs and shocks, and a 1" bl. Also some tube fenders which is a toss up between m.o.r.e., poison spider and river raider. She will mostly be a mall crawler, but will see an occasional excursion . The plan is 35" tires, but 37" isn't out of the question. I figure brakes, steering and gears will need upgrades as well as axle shafts.

I guess the question is what are pros and cons of different years . Anything I need to look out for? Track bar suggestions currie, jks? How much spring lift for 37" tires with the flat fenders and a 1" bl. Will I be ok with 2.25" of spring lift.

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Old 09-16-2011, 06:32 AM   #2
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Start here:
Since it's a mall crawler and you're planning on flat fenders, all you need is a 3" suspension lift to easily fit the 37's. Ditch the BL idea, JK's don't need them. Since you asked about "years" I assume you are buying used. Gearing is going to be an issue with 37's and the 3.8, especially with the automatic trans. Add new gears to your list.


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Old 09-17-2011, 09:01 AM   #3
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I read the lift reviews before I posted, but already knew my springs would be ome or currie and really didn't see anything on track bars. Also do I understand it right that you don't need a bl to do a tt on a jku then.

Also is there some issue with gearing a newer jk?
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Old 09-17-2011, 11:53 AM   #4

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Originally Posted by rda616 View Post
Also is there some issue with gearing a newer jk?
No if you're running an auto, 4.10s (only available on the Rubicon), and nothing bigger than 35s.

2012 JKU Rubicon - Delivered 8/19/2011
Auto - 4.10s - AEV: 3.5" SC lift, Milspec front bumper, rear bumper, tire carrier w/ hi-lift mount, front skid plate, high-steer - Warn XD9000i w/ Viking Winchline - 35" BFG MTs - Hellas - Katzkin Leather - RAM iPad mount - Cobra 75/Firestik - Poison Spyder Fairlead - Mopar Enhanced Rock Rails - aFe y-pipe - Rock Hard Oil Pan/Engine Skid - 10lb PowerTank
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Old 09-17-2011, 02:03 PM   #5
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Sorry. Thought I heard about it locking up in safe mode (trans not shifting ) with a regear on some new models. Could have just been the 2012 model which is out of my price range anyway unless I lease it, then buy it out later. The actual gearing part I can do myself. I have done them on several other vehicles I have owned and have my own dial indicator inch pound torque wrench. Press and other specialty tools.

The reason I asked about lifts is I figured people would throw ideas and suggestions about do and don't things . Like I have heard about bump steer issues with lifted jk's as well . Is this fact or fiction, and if fact then what do you need to correct it, drop pitman arm, track bar relocation bracket?
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