Quick question, I just got around to putting my Black Diamond 2"bb on this morning and I measured the axle both before and after. Before the front was dead center, the rear was a total 1/4" off to the drivers side, after the lift the front is a total of 5/16" off (slightly more than 1/8 " off center) and the rear is a total of 3/4" off ( 3/8" off center) to the passenger side. Is this typical of 2" BB installs, is it worth looking for an adj track bar for the rear and if so is there one that will work with such a small amount of correction needed. Am I just being to critical, should I just leave it alone. Thanks in advance for any info..


Wheelerbob

 

Your front seems pretty close and you could probably get buy with it like that just fine.
The rear is far enough off center, and being off the opposite side as the front, that I would fix it.
You could get the Full Traction rear track bar to fix your rear axle centering problem.
Then if you ever go bigger, you'd still have the adjustment to center the axle again.
The adjustable FT track bar, as short as it will go, is the same length as the stock track bar, so it will work fine.
I'd suggest Northridge 4x4 if you want to buy one

 

Bump, any other opinions....

 

anything under .5 inche is fine. When adjusting your track bar, don't lift the car... that just makes it harder to get the bolt on or off. Leave it on the ground and turn you wheel. The pressure from turning your wheel will shift the axle.

 

IMO a 1/2" off is enough to notice without even getting a tape measure out.
The problem is the fact that the front and rear track bars mount to the opposite sides of the frame.
So that means your front will be off center to the driver side, and the rear will be off center to the passenger side,
which means they are even further off center from each other and your Jeep will dog track down the road.

 

I agree, something else to consider is any amount of off center is putting stress on all of your suspension components. Your sway bars, control arms, springs, shocks, etc. are bearing that stress 100% of the time. When I installed my F/R FT Trackbars, I removed the OEM ones and immediately noticed everything pulled itself back to vertical. A slight tug on the body, and the Trackbar bolts lined right up. Now it doesn't feel like the Jeep is tugging left/right over the bumps either.

One note, if you purchase the FT trackbars, make sure to grease the crap out of the bushings (including the Jeep frame mounts) and tighten the living hell out of them. 125 ft. lbs. didn't work for mine, I ended up with 170 ft. lbs. and now they are quiet and still flex as designed.

 

My statement was under .5 inch. So if looking at 3/8's inch, that isn't much. Someone made the point that .5 inch off adds stress to the system. If the arm is 18 inches (just a wild guess, have not measured it) and you are off by .5 inch the perpendicular load is less than, 27 pound force per 1K pounds force of load. Not really worried about the stress.

 

This of course assumes 0 tolerances. Since the control arms have bushings which have give, the lateral or perpendicular stresses differences do drop significantly