I have CPP a-arms. I am trying to get to +5-degrees of caster, and I am not getting close. I can't put more than 1/4" of shims on the rear upper bolt (+1 1/4 caster) without running out of room on the bolt, due to the thickness of the shaft. Where could I get longer a-arm bolts? Perhaps, just get Grade 8 bolts that are longer? Camber is off as well so that will need a few shims. I double checked that the a-arms on the correct wheels, okay there.

 

UMI has rod ends for caster adjustment. I was only able to get about 3.25⁰ with my BMRs. I bottom the front bolt out, and leave just enough threads for the nut on the rear bolt.

 

I added 1/2” of shims to rear before I got too close to steering column. This gave me about +2 caster. Added 1/4” to front for +.5 camber. I think if I add more to front to achieve -.5 camber, my caster will decrease. Correct? Bummer, these upper a-arms may be sturdy but that over 1” cross shaft limits what I can do. Looks like Global West or UMI uppers are