Well, I lied earlier....my suspension project is not quite complete, yet.
I took the Jeep in to have the alignment professionally checked. The camber was good. The toe was off, but well within adjustment range.
Unfortunately, as I kinda expected, the castor is only about 2.5 degrees. Factory spec is 5-7. So, I need some 3-5 degree shims under the front axles. Darn.
My question is, the OME YJ rear springs, which I'm using for my fronts, already have what appears to be a shim installed by the factory. They look to be about 1.5 - 2 degrees, but the factory position has the thick end of the shim facing towards the rear of the Jeep.
The alignment mechanic told me I should be able to flip those existing shims 180 degrees. If our geometry is correct, doing this should net about a 3-4 degree change in the castor, and get me within spec.
What I'd like to know, before I drop the springs again, do those factory shims, in fact, rotate? Or, will I have to order a set of 4 degree shims to stack on top?
Could one of you, who have the springs loose, check to see if the factory shims are moveable?
Many thanks in advance,