Align to spec after lift?

[Abe Nitro]

Please advise on your experience with achieveing facorty alignment specifications after lifting your 100, and possible measures to resolve what I describe here.

After installing a complete OME suspension on my 99 100 Series, my local alignment shop informed me that it will not align to all factory specs. My understanding is that it would align to factory specs.

I installed the suspension this week and drove the truck around a bit to settle the suspension and make some final torsion bar adjustments prior to bringing it to the shop. My OME torsion bars are adjusted to the Slee recommended 60 MM of droop travel, and I have OME 860 springs in the rear.

The shop adjusted the camber and toe within spec, but informed that the caster could not be adjusted to within spec.

Here are the factory specs and my current settings.

factory spec min/max
caster 1.8 / 3.3
camber -0.7 / 0.8
toe 1/32 / 1/16

my results after alignment (right / left)
caster 0.5 / 0.8
camber 0.1 / 0.2
toe 1/32 / 1/32

 

[spressomon]

Please advise on your experience with achieveing facorty alignment specifications after lifting your 100, and possible measures to resolve what I describe here.

After installing a complete OME suspension on my 99 100 Series, my local alignment shop informed me that it will not align to all factory specs. My understanding is that it would align to factory specs.

I installed the suspension this week and drove the truck around a bit to settle the suspension and make some final torsion bar adjustments prior to bringing it to the shop. My OME torsion bars are adjusted to the Slee recommended 60 MM of droop travel, and I have OME 860 springs in the rear.

The shop adjusted the camber and toe within spec, but informed that the caster could not be adjusted to within spec.

Here are the factory specs and my current settings.

factory spec min/max
caster 1.8 / 3.3
camber -0.7 / 0.8
toe 1/32 / 1/16

my results after alignment (right / left)
caster 0.5 / 0.8
camber 0.1 / 0.2
toe 1/32 / 1/32

Typical of caster based upon my experience with my '99. The steering, post lift, was a little 'nervous/twitchy' at and on highway speeds...but that's all we got to work with. However less caster will benefit you when you are crawling around on-trail . FWIW: I added 1" wheel spacers in front that didnot change the caster but helped with the highway speed/twitchy steering issue: It did not return to the stock level of steering precision at speed...but it helped. FYI: Some 80 guys have said a little more toe in helps with this too...

 

[hoser]

Abe, my post lift caster specs came out very similiar to yours. Check my other thread. I'd like more caster but haven't figured out a way to do it short of custom upper A-arms.

LF Measured (OE-Specs)
Camber -0.1° (0°±0.75°)
Caster 0.4° (3.08°±0.75°)

RF Measured (OE-Specs)
Camber -0.4° (0°±0.75°)
Caster 1.6° (3.08°±0.75°)

Total Front Toe -0.07° (0°±0.2°)
Total Rear Toe 0.01°
Thrust Angle 0.06°

 

[sleeoffroad]

Ben, based on the camber readings, they can compromise on that a little and still be in spec. That way they will get the caster closer to spec.