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Old 05-03-2013, 09:39 PM   #1
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Control arm upgrade ?s

I'm in the market for control arms for my 2005 TJ. The front specifically. I'm hoping with all the knowledge here that someone can guide me through what advantages (if any) to adjustable arms versus non-adjustable arms and if they're needed for my 2.5 inch lift.

Thanks.

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Old 05-03-2013, 09:46 PM   #2
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adjustable arms give you the option of dialing in the specific length you want should your needs or lift height change over time; they give you more flexibility than fixed length arms.

For the front, you can use adjustable arms to dial in your caster angle, which will make the jeep feel less flighty on the road. If the steering feels ok with the arms you have on there now, then your caster angle is probably fine (not at stock angle, obviously, but not far off enough to make the jeep feel flighty).

why do you want to replace just the front / what are your long term plans for the jeep?

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Old 05-03-2013, 10:38 PM   #3
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Most of the time you'll be ok with your stock arms and a 2.5 inch lift, unless your gonna run an SYE and DC driveshaft or if you bend or break them. The stock ones aren't gonna be near as strong as DOM tubing arms but it probably takes quite a bit to bend them. Rustys offers pretty affordable control arms made from DOM tubing available with rubber or Flex joints. Check them out if you are thinking about getting new ones.
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Old 05-04-2013, 10:12 PM   #4
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Quote:
Originally Posted by JKralph View Post
adjustable arms give you the option of dialing in the specific length you want should your needs or lift height change over time; they give you more flexibility than fixed length arms.

For the front, you can use adjustable arms to dial in your caster angle, which will make the jeep feel less flighty on the road. If the steering feels ok with the arms you have on there now, then your caster angle is probably fine (not at stock angle, obviously, but not far off enough to make the jeep feel flighty).

why do you want to replace just the front / what are your long term plans for the jeep?
I discovered a few bad bushings (look like they had been pinched on one side) and a slightly bent arm. It feels as you described...flighty on the road.

My long range plans for my jeep would be to have a low CG rig with an eventual tummy tuck.
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Old 05-05-2013, 12:35 AM   #5
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For 2.5" it really is not needed. I have 4" and am still running the stock control arms. Just make sure if you are going to replace them get adjustable arms preferably with johnny joints.
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Old 05-05-2013, 01:14 PM   #6
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...I have 4" and am still running the stock control arms...
Oh God...Think of the geometry man! I guess you can get the axle where you need it but I wouldn't even want to try with stock CAs.
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Old 05-08-2013, 11:58 AM   #7
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Originally Posted by doclouie View Post
For 2.5" it really is not needed. I have 4" and am still running the stock control arms. Just make sure if you are going to replace them get adjustable arms preferably with johnny joints.
I didn't think they'd be needed for my lift. I just thought I might as well upgrade since I have to replace the bad bushings and bent arm.

I found a set that are adjustable with rebuildable, greaseable joints. I'll probably go with those.

Thanks!
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Old 05-08-2013, 12:12 PM   #8
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I have about 2.5" of lift and have replaced all 8 control arms with aftermarket arms utilizing Currie Johnny Joints.

But then again, I'm also particular that my axle is in the correct position (caster, pinion angle, clearances, etc).

Are aftermarket arms NEEDED for any lift? No.
Do aftermarket arms allow you to fix your axle position (if you know what you're doing)? Absolutely.

Fixed length arms are fine, provided the length is exactly what you need. For example, factory arms are the exact length you need for the factory suspension. For aftermarket suspension changes, you can determine what length you need by installing a set of adjustable arms, setting the necessary axle position (caster, pinion angle, etc), then making a set of fixed arms of the necessary length. But then again, that's kind of a useless 2nd step isn't it? Adjustable arms give you the best flexibility later down the road, should you change anything...like lift height, belly height, tire size, driveshaft type, weight, etc.

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I found a set that are adjustable with rebuildable, greaseable joints. I'll probably go with those.
just realize quality of arms, bushings and joints varies widely. Some are better than others. Bad ones can actually be worse than stock arms.

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