rckymtnguy
NAXJA Forum User
- Location
- Englewood, CO
This is perhaps a discussion more than a question, and I am new to
so if I am asking about things already answered somewhere else... please let me know.
My 99 XJ will be getting 3.5" of RE lift and 31x10.50s which by my calculations are going to increase my ride height by about 5.5" over where the XJ sits now. That changes the geometry quite a bit. Now... I am probably over thinking this, but my engineers brain starts asking "how does really affect things? " I want to believe that most of these the "factors" have been taken into account by the lift manufacturers so I should just follow the instructions and everything should be ok... "right"? I don't know about that one.
I'm in the process of rebuilding the front end and I run across the adjustable Ball Joints. So I am thinking.... why would I even consider those? What does lifting the front by 3.5" actually change about the geometry of the alignment? Do I need to have adjustable ball joints to correct for camber / caster changes caused by the lift?
How much trouble have you had with keeping your alignment straight after a lift like the RE 3.5" Superflex? It does include the lower control Arms, and I will be ordering the RE adjustable track bar, as well as replacing nearly every movable joint in the front end. ( debating on the UCA's now)
Should I consider the adjustable ball joints now to save myself some trouble later?
I realize I am not running this thing around a race track, but I want to do it right the first time. Is it in the original engineering from Jeep that makes them popular to modify the suspension or just good marketing by the manufacturers?
- thanks
JM

My 99 XJ will be getting 3.5" of RE lift and 31x10.50s which by my calculations are going to increase my ride height by about 5.5" over where the XJ sits now. That changes the geometry quite a bit. Now... I am probably over thinking this, but my engineers brain starts asking "how does really affect things? " I want to believe that most of these the "factors" have been taken into account by the lift manufacturers so I should just follow the instructions and everything should be ok... "right"? I don't know about that one.
I'm in the process of rebuilding the front end and I run across the adjustable Ball Joints. So I am thinking.... why would I even consider those? What does lifting the front by 3.5" actually change about the geometry of the alignment? Do I need to have adjustable ball joints to correct for camber / caster changes caused by the lift?
How much trouble have you had with keeping your alignment straight after a lift like the RE 3.5" Superflex? It does include the lower control Arms, and I will be ordering the RE adjustable track bar, as well as replacing nearly every movable joint in the front end. ( debating on the UCA's now)
Should I consider the adjustable ball joints now to save myself some trouble later?
I realize I am not running this thing around a race track, but I want to do it right the first time. Is it in the original engineering from Jeep that makes them popular to modify the suspension or just good marketing by the manufacturers?
- thanks
JM