About control arm
01-29-2014, 07:56 AM
#1
JK Newbie
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About control arm
I'm having to replace the upper control arms on my 07 JK to adjustable ones so I can tilt the pinion due to a vibration after changing the driveshaft. My question is, do i need to change out the lower control arms as well before i tilt it? Sorry if this sounds dumb but i'm trying to learn all this stuff as i go.
01-29-2014, 08:21 AM
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01-29-2014, 10:26 AM
#7
JK Super Freak
With 6" of lift you should replace all eight stock arms with adjustable arms and front axle housing with the C's positioned to get caster back.
Last edited by Ncb; 01-29-2014 at 10:37 AM.
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01-29-2014, 10:34 AM
#8
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6" lift with all stock control arms? it is likely that the driveline vibe is going to be the least of your worries. Once you minimize your pinion angle you could be into the - caster range which means on road handling may be dangerous. Are the springs bowed as well. Do you have the stock front axle housing?
In all honesty I don't think anything other then cut and reweld Cs and springs seats is gonna fix your problems.
In all honesty I don't think anything other then cut and reweld Cs and springs seats is gonna fix your problems.
Last edited by jtphoto JK; 01-29-2014 at 10:43 AM.
01-29-2014, 10:37 AM
#9
Agreed, and going to a longer arm would help too. If I were skimping I would want the front lowers and rear uppers for pinion angle adjustments. But again, with this much lift you really should consider lengthening the arms.
01-29-2014, 10:56 AM
#10
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If you are planning on changing the rear uppers I would highly recommend going with the RK uppers and lowers. This will push your rear axle back up to 1" to recenter your wheel in the wheel well. It will also allow you to adjust your pinion and thrust angle.
However at 6" of lift you will benefit from a long arm set up. I am surprised you didn't have a driveline vibe even before the driveshafts were installed.
PM us if you would like to talk in more detail on this.
However at 6" of lift you will benefit from a long arm set up. I am surprised you didn't have a driveline vibe even before the driveshafts were installed.
PM us if you would like to talk in more detail on this.