Camber Bolt Adjustment
It’s really up to you. The QA1 UCA’s have additional positive caster built in, so that may change the way you set the adjustment.
Usually I start at the maximum positive caster setting, which means the forward adjuster is set so the control arm is all the way “out” and the rear adjuster is set so the control arm is all the way “in”. Or in other words the front adjuster positions the control arm as far away from the frame as it will go and the rear adjuster pulls it in to the frame as far as it will go. That setting creates the most positive caster you can have regardless of what UCA you’re using.
Depending on the UCA and your ride height you may need to adjust further from there to get your camber where you want it. I run my cars lower than stock, so max positive caster usually results in some negative camber, which is good for radials.
But it really depends on what you want for an alignment. For radials positive caster and slightly negative camber is what you want. How positive you make the caster and how negative you want the camber depends on how aggressive you want your handling to be.
The SKOSH chart is a good guide, although it’s a little conservative with positive caster IMHO, especially for a power steering car. Some of that I think is leftover from the parts available at the time, it was hard to get more than +3* of caster even with offset UCA bushings. Personally I think you can add about +2* caster to these recommendations across the board.
It’s really up to you. The QA1 UCA’s have additional positive caster built in, so that may change the way you set the adjustment.
Usually I start at the maximum positive caster setting, which means the forward adjuster is set so the control arm is all the way “out” and the rear adjuster is set so the control arm is all the way “in”. Or in other words the front adjuster positions the control arm as far away from the frame as it will go and the rear adjuster pulls it in to the frame as far as it will go. That setting creates the most positive caster you can have regardless of what UCA you’re using.
Depending on the UCA and your ride height you may need to adjust further from there to get your camber where you want it. I run my cars lower than stock, so max positive caster usually results in some negative camber, which is good for radials.
But it really depends on what you want for an alignment. For radials positive caster and slightly negative camber is what you want. How positive you make the caster and how negative you want the camber depends on how aggressive you want your handling to be.
The SKOSH chart is a good guide, although it’s a little conservative with positive caster IMHO, especially for a power steering car. Some of that I think is leftover from the parts available at the time, it was hard to get more than +3* of caster even with offset UCA bushings. Personally I think you can add about +2* caster to these recommendations across the board.