I searched and couldn't find anything so here goes. Have a Teraflex 3" longarm lift
on my JK. The rear coil springs are bowed and the passenger spring is rubbing the stock trackbar and making an annoying squeek. I tried making the lowers a few turns longer but it didn't help. I have the stock rear driveshaft still and the pinion is pretty close to being inline with it. Any ideas? I really don't want to have to buy wedges to fix it. Is there anyway to fix this buy adjusting the arms? Did lengthening the lowers help or hurt? Which adjustments should
I make to fix it? Can I fix it without the wedges while still having the pinion angle set properly?

 

To get some spring perches or wedges, this weekend I'll be changing over my control arms and drive line found a few posts on springs bowing. Appears that once you lift and set the pinioin the lower spring mount requires a wedge or new mount. Check out northridge4x4 he has options, or google it!

 

Rock Krawler has a 15 degree wedge that goes in the lower spring perch to help out with this problem.

 

I ordered the Rock crawlers they posted up on another site saying they are 10 degree.

 

I ordered a new set of teraflex spring mounts with retainer clips, cut off the old mounts and welded the new one on the true top center of the axle.
It made a big difference in the ride height of the rear and also improved the ride, with the springs bent like that the ride is alot "squisher" than it will be if you mount the springs back in the correct location.

 

i know you said you dont want to, but I dont know how to adjust it without removing/rewelding the perches or by buying the wedges. I tried to adjust mine out & couldnt or i screwed up my pinion angle, so i just set the pinion where i wanted it and installed th wedges. The wedges wont screw up your pinion angle, they only flatten the springs out some so they ride more perpendicular to the axle.

If i could weld i would have moved the perches instead (just a s a matter of preference) but the wedges have solved the problem at a much cheaper and less labor intensive route.

 

We installed the JKS rear adjustable spring perches...... problem solved!

 

Thanks for the reply. That's what I was afraid of, adjusting the arms not being able to fix it. I really don't want to cut the stock mounts off so it looks lime
I'll go ahead and order the wedges from rock krawler. Glad to see they fixed it. Was just hoping I didn't have to pull the rear springs out but I guess it isn't tha bad of a job. 2 hours or so total I'm sure. Thanks again!

 

The bow comes from 2 sources: the forward movement of the axle and the rotation of the axle.

If you have both upper and lower CAs you can move the axle towards the back and then use wedges or adjustable perches to adjust for the rotation.

 

I already have the axle adjusted aft so the tires clear the pinch seam.