I just installed a set of rockkrawler rear control arms on my AEV 4.5" lift. I took it out for a little stroll in a ditch and discovered that at flex, the frame-side track bar bracket hits the bump plate extensions before the bump stop even gets close even if it got close they won't line up, any suggestions? I was thinking of shaving the blocks down on the back side, or just getting rid of them and putting in a true bumpstop extension like RK's weld on one.

i was rolling through a ditch to flex out the suspension a bit



this is the contact

 

what is that big block for?

 

the big block is an extension of the plate on the axle, instead of running an extension on the bumpstop itself, but in this case, it is more of a hassle. the bumpstop is mounted on the frame outside of the coil spring from the top.

 

If I'm seeing it right in that pic, the upper bumpstop will contact the lower at the very front edge? If so, shaving the back corner of that block should do it.

Any thoughts of grinding off the spring and bumpstop perches and welding them back on top of the axle? (the 'new' top of the axle, I guess, since it's rotated back with the lift...) I've seen a few posts with similar issues, and that was one of the fixes.

 

Looks like you have your axle adjusted too far back(control arms too long). Even if you shave the bumpstop off, more than likely the track bar will be hitting the coil springs.

 

well it is much further, but I followed the specs in the RK instruction manual, and I even went a little shorter than they said. The spring doesn't make contact with the bar, although it comes close because the spring is bowed, however I saw that RK makes coil spring wedges to help alleviate that issue. Another complany's blocks, who I am not going to say are similar except they are square tube steel cut at an angle, so that the front sticks out in front of the axle and there is a void in the rear.

 

I am running the same rock krawler control arms with teraflex bump stops, no issues here. Teraflex stops overhang the front side of the axle to meet up to the bump stop, and the back side is cut on a taper.