Vehicle & Technical > Jeep

grand cherokee body lift

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dxmedia:
Have you adjusted  your castor?

Yeah I've a set of spacers on top of a 4 inch lift.

fuddy-mukker:
nop, how do you do that??

dxmedia:
When you lifted the front end, did you use the standard radius arms? (the arms which attach the axle to the chassis rails on the body).

If you used the stock ones, as you lift the bottom of the axle will pull in towards the back of the truck, rotating the axle around. This rotation around the centre line of the axle is castor. Just think of how a shopping trolley wheel always points back, that's what castor does.

What you should have got in the kit is a set of longer / adjustable lower radius arms, these will rotate the axle back around, which in turn will sort out a lot of the self centering (which you probably don't have at the moment) and steering issues, as well as bump steer (death wobble to the US guys) issues. The problem with rotating the axle back on such a lift if you have the CV style front prop shaft, you'll go past it's limits of movement, so you'd need to swap your front prop for one from an XJ which has the normal UJ and a slide, which also means swapping out the yoke on the front axle.

You'll also need to cut and shunt your panhard. At 4 inches, you can bodge the bottom mount over a little by drilling a new hole, at 6 inches, you'll need to cut and weld the panhard, and it's a good opertunity to take it to someone with a pipe bender and bend a double S in it to get it straight again.

You should also extend your bump stops by the same amount as the lift. I've only extended by bump stops by 4 inches on mine, and have yet to have any problems. I do have 6 inch over stock shocks, and extended brake lines, the shocks max out first.

Well, that's what I've had to do to the front of mine to get the castor about right, the axle lined up and articulation clear on both sides, other people may have taken different approches will also have worked, but the issues with yours, most likely is that the castor is way out due to the lift.

Brian the Sn@il:
Got any Pictures ? as ive just bought a Grand Chokie :)

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