Drivetrain jerk

[DTHVLY]

Originally posted by evldave:
I'd bet you my hummer it isn't axle wrap.

That's common on USED vehicles, with softer springs, and I honestly can't remember ever hearing of it on a axle-over-spring setup. I've got some experience lifting Jeeps and axle-wrap happens over time, mostly with cheapo budget lifts using lift blocks on stock springs after tens (or hundreds) of thousands of miles.

The best and cheapest way to get rid of axle wrap is an add-a-leaf. It will make your ride stiff as hell, but your axle won't wrap. Given the stiffness of the ride, I seriously doubt that anyone has enough (hard) miles on their rear springs to cause the # of issues that seem to be outlined on this thread. I'd even be willing to bet we could disconnect the rear swaybar and drive with no problems (I think there's another thread on that) - trust me, if you can disconnect the swaybar and drive around a corner, your springs are stiff enough to not have axle wrap as a problem.

While axle wrap is more likely with old springs it does occur on new vehicles. Ask anyone with a Tacoma they come straight from the factory with it bad and they only have 190hp. After driving a Tacoma I swore I would never buy a leaf spung offroad rig. I really like the Toy 4 link coilover rear suspensions a lot better than the leafs, that's one of the main reasons I want't to check out the FJ.

While it's less likely on a axle-over-spring setup it does still happen but the swaybar disconnect would be a good test.

Don't you think a traction bar would be a better cure because it dousn't stiffen the ride like an AAL and won't soften like the AAL eventually will.

Is your name "evldave" taken from Evil Dave on the Stern show?