Join Date: Dec 2001
Location: Belleville, Illinois
Thanked 22 Times in 17 Posts
Re: 2\"-3\" lift steering geometry correction questions.
I think that Nix means tie rod and drag link need to be parallel.
Most CJ and YJ lift kits are springs with more arch, and some have longer shackles too. As the spring gets more arch it will have less travel and give a bouncier ride. Likewise, as the front shackles get longer, the caster will decrease and the steering will lose its straight-ahead stability.
Also, anything that takes the drag link off of horizontal will cause bump steer. The greater the angle, the greater the bump steer. A steering damper won't remove bump steer, although it might mask it aq little.
A 3" lift with a 3" drop pitman arm should have the same steering geometry as stock. But the few I've ridden in have a pretty nasty ride. And it's not a firm ride like a sports car, it's more like being on a pogo stick, with a lot of fore and aft pitching thrown in.
I don't think that I've ever ridden in a Jeep with a 2" lift.