Understanding rear lift and correcting suspension geometry

[frawstme]

My UZJ100 currently has 50mm spacers on top of factory springs (my Dobinsons springs are on order) and it's causing some issues with my rear end- at least I think that's the cause

It's my understanding that taller rear springs causes the panhard bar to ride higher, which pulls the entire rear axle outwards a little towards the RH side of the car where the panhard attaches at the frame. When I took my rear end apart over the weekend, my sway bar links were both destroyed. Both are excess weight like the sway bar is being pulled harder on the opposite side of the panhard bar, which leads me to think since the rear axle is slightly offset to the RH side and that's causing the sway bar to pull further in that direction towards the front of the car

However I also found out that my sway bar is some JDM aftermarket brand called SEV. So I'm not sure if it's the panhard bar or the sway bar that's causing this pulling at the rear end

The sway bar is 26mm thick and seems to be the same shape as OEM bars.

My question is can this be resolved with extended sway bar links? Or are there extended panhard bars? ..or would maybe going to a OEM sway bar be the fix? That seems like the most unlikely thing

I'm not familiar enough with the uzj suspension yet to fully understand the consequences of lifting and what all parts need to modified or swapped out to correct geometry

 

[Trapper50cal]

I can't answer any of your questions per say, except to offer that they make adjustable panhards and panhard relocation kits to re-center the rear axle side to side. I have a relatively large lift for a 100 and factory panhard and the extra angle pulls the DS tire/wheel in about a quarter to 3/8ths of an inch. I haven't recognized or identified any ill effect to my swaybar or swaybar links nor any driving dynamics that seem off or dangerous.

 

[frawstme]

I can't answer any of your questions per say, except to offer that they make adjustable panhards and panhard relocation kits to re-center the rear axle side to side. I have a relatively large lift for a 100 and factory panhard and the extra angle pulls the DS tire/wheel in about a quarter to 3/8ths of an inch. I haven't recognized or identified any ill effect to my swaybar or swaybar links nor any driving dynamics that seem off or dangerous.

Ohh thanks, that's super useful. 3/8ths an inch isn't bad at all I was expecting it to be a lot more than that. What's clear is that my sway bar is twisting slightly to the left when the cars just sitting with its weight on the tires, so it's always under some strain.

If it's less than half an inch of offset then I don't think making adjustments to the panhard would be necessary at all. I guess the best bet for me would be to try extended links to relieve some of the tension on my sway bars, and if that doesnt work I may need to find some OEM

Edit: how tall is your fender height?

 

[Trapper50cal]

For the rear:

23.5" - center of hub to edge of fender
38.5" - ground to edge of fender

I run OME 863 Heavies.

Oh, and I run Trail Tailor extended swaybar links and Fox Performance Series 2.0 shocks for 0"-3" lift.