How do you adjust the caster. Sorry I have a 3.5 lift with a 1 inch spacer up front. I haven't adjusted anything. Don't know how lol. And don't know how to tell if the driveshaft is at proper specs. Any help on this.

 

Use one of the following

1. Adjustable lower or upper front control arms
2. Drop brackets for lower arms (like the AEV ones)
3. Cam bolts (not recommended).

 

Ok. I still have the stock control arms. Can you adjust those?

 

Go up to the write-ups area and find the DIY Alignment write-up (there is an index stickied to the top). It is a good resource, but obviously not as accurate as the readings you would get from an alignment shop.

For the driveshaft, go out to Tom Woods website and read through both the JK section, and the Tech Info link at the top. That is more for aftermarket shafts, but you will get some info on the stock shafts as well.

No. You need to add components to adjust the caster and/or camber.

Cam Bolts are the least expensive, but not the best option for an offroad rig as they have been known to slip. And you will need to notch out the brackets to install them, so if you decide to go with new arms later, the notches will need to be welded up. Brackets have some good reviews, but again, may not be the best option offroad because they hang down lower and may catch on rocks and such. New longer/shorter 'fixed' arms can work, but you can not fine tune with them. Adjustable arms are the most expensive, but are arguably the best option.

 

You can get an idea of where caster is by knowing pinion angle.

You can measure pinion angle at the 2 flat circles on each side of the differential.

Stock is around 2* pinion up (88*) and caster would be 4* with a total of 6* separation.

1* at the pinion (89*) caster 5*

0* at pinion (90*) caster 6*

Lowers or AEV drop brackets for caster correction. Uppers will work as well but a little harder to get to and adjust.

 

x2 this about sums it up for the adjusting of your caster/pinion.... If you get some adjustable control arms, TeraFlex has a great step by step for dialing in your front caster and rear pinion.

 

The best option is adjustable lower control arms.

If you do the drop brackets (which is fine if you don't have many rocks on the trails you run) you will end up losing ground clearance.

The adjustable control arms will also be much stronger than the factory arms.