Surprise. Another Death Wobble Concern
JK Jedi Master
Joined: Jan 2008
Posts: 11,463
Likes: 165
From: Austin <--> Colorado Springs
3 inches of lift with no caster adjustment. Sorry, centering your steering wheel just isn't going to adjust your caster from the additional lift height. (the kit included a way to adjust caster for a reason...)
Cams - least expensive, but have some issues.
Fixed Arms - Longer/shorter than stock, no additional adjustment.
Adj Arms - Preferable. Uppers are less expensive, but lowers offer a wider range of adjustment.
From the FAQ's at the top of this section. ( with 3 inches and no adjustment, your caster is likely down around 3° )
A quick way to tell is to go toss an angle indicator under your c's on both sides (see the alignment write-up link above) and see what you have currently.
Cams - least expensive, but have some issues.
Fixed Arms - Longer/shorter than stock, no additional adjustment.
Adj Arms - Preferable. Uppers are less expensive, but lowers offer a wider range of adjustment.
From the FAQ's at the top of this section. ( with 3 inches and no adjustment, your caster is likely down around 3° )
Q: What is Caster? How much do I need?
A: Caster is the angle upon which your front axle sits at in order to help keep your Jeep driving straight. Positive caster, which is what you want, will cause your axle to sit in a way that your pinion shaft will be dipping ever so slightly towards the ground. Too little or even negative caster angle can cause your Jeep to wander and feel 'flighty' or 'darty' as I've heard some people call it. From the factory, your JK will have +4.2° of caster and if you lift it and install larger tires, you will need to increase this amount to help compensate for the modifications. At 3"-4" of lift, I have found that +6°~8° of caster will do wonders to help improve the handling of your Jeep JK Wrangler.
A: Caster is the angle upon which your front axle sits at in order to help keep your Jeep driving straight. Positive caster, which is what you want, will cause your axle to sit in a way that your pinion shaft will be dipping ever so slightly towards the ground. Too little or even negative caster angle can cause your Jeep to wander and feel 'flighty' or 'darty' as I've heard some people call it. From the factory, your JK will have +4.2° of caster and if you lift it and install larger tires, you will need to increase this amount to help compensate for the modifications. At 3"-4" of lift, I have found that +6°~8° of caster will do wonders to help improve the handling of your Jeep JK Wrangler.
Last edited by nthinuf; Nov 7, 2009 at 03:18 PM.
JK Enthusiast
Joined: Oct 2007
Posts: 479
Likes: 0
From: Downingtown, PA
I had something similar happen so I added JKS lower front control arms. My caster was about 3 deg and the new LCA took it up to 6.5 deg it was a huge difference in steering control, much tighter. Also may want to upgrade to a better steering stabilizer.