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Old 02-16-2011, 12:57 AM   #1
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Control Arms help

Can anyone explain to me the difference between the control arms and long arms??? or if its worth the extra money to get for a 04 rubi with a 3" SL and 1" BL?????

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Old 02-16-2011, 06:44 AM   #2
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Long arms are control arms...just longer than stock to give added flex.

Is it worth the extra $? Personally I have to say 100% yes >IF< you do rock crawling. If you just drive around town or do mud and whatnot, then I don't think there is much benefit to having them.

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Old 02-16-2011, 07:24 AM   #3
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I was thinking about Long Arms a while back, but Jerry said they tend to get hung up on everything so I nixed the idea. I don't rock crawl, so the idea is still in the back of my head, though.
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Old 02-16-2011, 08:46 AM   #4
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Can anyone explain to me the difference between the control arms and long arms??? or if its worth the extra money to get for a 04 rubi with a 3" SL and 1" BL?????
No matter what lift size you have, you'll have control arms. Control arms locate the axle under the Jeep front to back. The track bar locates the axle side to side. In the stock double 4-link configuration, there are 8 total control arms.

Short arms attach between the stock mounts.


Long arms require cutting off the stock frame mounts, and extend the frame side mounting point further toward the center of the frame. They usually attach to the t-case skid.



The difference is noticed when you start talking about large ranges of suspension travel.



Long travel shocks used in conjunction with long arms means you can get lots of droop. Well...if you have short arms, the axles tends to move backwards more, the springs curve, and the shocks can actually hit the shock tower.

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Old 02-16-2011, 10:26 AM   #5
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Maybe that is why my bumpstop hits the front of the spring. My axle might be too far to the rear. Have to get an angle finder to check all my geometry. He did away with the cams so he might have the control arms sitting wrong in the slots.
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Old 02-16-2011, 10:39 AM   #6
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Maybe that is why my bumpstop hits the front of the spring. My axle might be too far to the rear. Have to get an angle finder to check all my geometry. He did away with the cams so he might have the control arms sitting wrong in the slots.
in the front, with a lift, you want to install something to gain some caster back.

that means cam bolts or adjustable lower control arms. 5.5-6.0° caster is good for 33s, 4.5-5.0° is a good range for 35s.

that will push your front axle forward slightly, and take some of the curvature of the spring...but you can also hammer the jounce tower pretty easily so it sits more centered.

also, bumpstop extensions go on the front lower - so they bolt to the spring pad. if you extend them from the uppers, the bumpstop cup will rub much worse on the spring.
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Old 02-16-2011, 11:39 AM   #7
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No matter what lift size you have, you'll have control arms. Control arms locate the axle under the Jeep front to back. The track bar locates the axle side to side. In the stock double 4-link configuration, there are 8 total control arms.


ok so if i may ask... i understand that i have control arms im trying to replace alot of my old parts. i think it would prob just be best to replace the old arms rather than put on long ones. but thank you for filling me in again

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