I've got a 88 YJ that I just finished putting Ford full width 1/2 ton axles under it. At the same time I put the steering tie rod and drag link above the springs. The Jeep was spring over to begin with. Going down the highway today the rearend started to sway back and forth uncontrollably this was not translated through the steering wheel. The guys in the Jeep behind me said that the rear tires started to come off the ground while I was doing about 65 or so. :eek: What can I do to make this thing driveable again? It worked perfect on the trail. Thanks

Originally posted by Ropeburn
Ford full width 1/2 axles under it.

WTF?:confused: :confused: :confused:

Sorry it was late. 1/2 ton

Sounds like maybe you need an ailgnment with the rear in relation to the frame and front tires. Are your bushings worn out? Tires balanced? Check your hardware and see if anythings broken or come loose. Thats about it though.

if the tires were coming off the ground I would say it was the tires out of blance. Adding wider axles should not effect your suspension THAT much. I would try to add a leaf to the springs to increase the spring rate sense the tires now have more leverage on the springs and to handle the extra unsprung weight, also stiffer shacks to deal with the extra wieght

I'm going to get some 9000 and see if that helps. The tires were balanced when I swapped axles, I had to change rims at the same time. I know it was done right because I did it myself. I didn't see anthing loose or worn out. I thing the reason the tires were coming off the ground was because the body was swaying so much they were pulled off the ground.

sfazr2, so you think the rear axle might not be aligned right with the frame? How so?

MY RIG USED TO lift tires driving down the road with out shocks like you were saying because of body roll a good set of shocks cured all my problems. Goood luck

SHOCKS! Its all about the shocks. Alignment death wobble would have happened before 65 mph. 9000 will solve your problem, most likely.

The rear shocks are really toast. I'll put some new 9000s on and hope that helps. Thanks.

Originally posted by ccmtrsprt
SHOCKS! Its all about the shocks. Alignment death wobble would have happened before 65 mph. 9000 will solve your problem, most likely.

don't listen to this guy, just cut the body off it...:flipoff2:

Cut the body off, toss some rockwells under it , 44s, trailer it and then I'll never have that problem again. Right? :flipoff2: :flipoff2:

Good point, I noticed that since I started trailing I haven't had any body roll problems not to mention tire wear is great.

That's the great thing about a trailer queen. No fender flares, tail lights, can run bead locks (legally) and can play hard with out worring about getting home.

RS9000'S ARE YOUR CURE

I Had the same problem, but i didnt lift any tires, after i installed my 9k's i ride like a real truck again :)

I hope so. Some of the other guys were telling me to put swaybars on. :barf::barf::barf:

Oh yea when was the last time you waxed it. It might need a new coat if its been more than three week. The air sticks to the unwaxed and causes the death wobble.
Right FatKid

Never been waxed while I've owned it. :flipoff2: But I would think that the air would slip off of the dust and dirt just fine.