Caster/Alignment Question with Adjustable UCA's

[ryankmasuda]

I'm getting ready to install my LR UCA's and I was looking at my last alignment print out. The caster was noted as being "maxed" and the left side is at 1.5 degrees and the right side is 2.2 degrees.

With these UCA's having an added +2.0 degrees of caster without adjusting (and adjustable to +4.0 degrees) should I install these at the +2.0 degrees or should I go to 3.0 degrees?

Does anyone have any experience with alignment or initial settings of the LR UCA's?

I've attached these photos of my print out and the setting options I have when I install the UBJ's

<a href="http://s11.photobucket.com/albums/a155/ryankmasuda/Toyota%204Runner%20Build/?action=view&current=Alignment-001_picture.jpg" target="_blank"><img src="http://i11.photobucket.com/albums/a155/ryankmasuda/Toyota%204Runner%20Build/Alignment-001_picture.jpg" border="0" alt="Photobucket"></a>

<a href="http://s11.photobucket.com/albums/a155/ryankmasuda/Toyota%204Runner%20Build/?action=view&current=dcee66f6.jpg" target="_blank"><img src="http://i11.photobucket.com/albums/a155/ryankmasuda/Toyota%204Runner%20Build/dcee66f6.jpg" border="0" alt="Uploaded from the Photobucket iPhone App"></a>

 

[J-money$$$]

What i dont totally understand on the "caster is maxed" is that there is no single adjustment for caster on the front end of the truck. There are two alignment cams. The front mainly does caster, but some camber as well. The rear does mainly camber but effects the caster some in the process. Its about a 75-25 deal on those cams. I would check to make sure that indeed one of your alignment cams is maxed out. It shouldnt need to be.

You are looking for 3˚ +or- 0.75˚ of caster total. If your front alignment cam is honestly maxed out, and your lower control arm bushings are good. then I would install them at 2˚ then go have it re aligned so the alignment cam is not maxed out any more. If you look down there and the cams are not fully one way then I would adjust those a arms to about +1˚

 

[ryankmasuda]

Thanks for the input, that makes sense to check those cams. You got me thinking that I should replace my lower A-arm bushings while I have things apart before the alignment too.