JBA Upper Control Arms

[hoaxci5]

Yes they do and I contacted Marlin about it and he said its normal.

[Sal-XK]

Is it the opinion then these were designed for larger lifts?


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[hoaxci5]

Is this at full droupe?

We designed a coilover strut for these reason needing more strut to steering knuckle clearance at full droupe.
Marlin Gehman

Yes it is at full droop in the pictures. So are you saying it's normal (but obviously not ideal?)

Yes, with how tight everything is on the IFS, the coil spring needs to be smaller and then suspension can drop more.
Marlin Gehman

(Email exchange from when I installed them)

[Omelet]

If you don't like the idea of them contacting, you could install limit straps to stop the down travel right before contact. It is a fairly easy thing to do.

[07JeepXK]

hoaxci5, how close is your steering knuckle to the spring/strut at normal ride height? Mine is extremely close. I can barely fit a finger in between. Think you could take a picture at normal ride height so that i can compare it to mine?

If you don't like the idea of them contacting, you could install limit straps to stop the down travel right before contact. It is a fairly easy thing to do.

Omelet, Im going to have to take a closer look at the suspension in the next couple days. I could be wrong, but think it might make contact prior to the tire being at full drop. I'll have to check it out. If this is the case and I add limiting straps Id lose a lot of down travel. I wouldnt care if my XK never left the pavement, but as well all know its off road almost as much as it is on road.

In the mean time can you point me in the right direction to where I can get my hands on some limiting straps that will work perfectly for my XK? Also where exactly do you install each end of the limiting strap?

[Omelet]

So you are thinking the arm are limiting your down travel by a good bit? Any chance know what your hub-fender measurement was at full drop before? I guess you could ask another XK owner with the OME and no JBA UCAs to measure theirs. Then compare that to your measurement at full drop to see the difference.

I got mine from a local off road shop. You could get just an adjustable strap and run it from one bolt to the next, or get a little more complicated like I did I got an adjustable clevis and a weld on mount to have fine adjustment in length. It is the more excepted way to do it. Also be aware that straps will stretch over time and the longer the strap the more it will stretch. I know some people here don't like certain other forums, but here is a link to my instal:

http://www.jeepforum.com/forum/f67/l...traps-1247555/

[07JeepXK]

I'm not sure if the control arms are limiting travel or not. I guess it could be possible since the steering knuckle is hitting the coil stopping it from going down any farther. I dont have any down travel measurements proir to the install.

[hoaxci5]

hoaxci5, how close is your steering knuckle to the spring/strut at normal ride height? Mine is extremely close. I can barely fit a finger in between. Think you could take a picture at normal ride height so that i can compare it to mine?

You'd have to ask Jon, I'm in Michigan for the next month and a half and left my Jeep with him. I don't remember to be able to even guess..

[Omelet]

Well you would need the measurements from a XK with the OME lift without the arms to compare to yours with the arms. You and Jake both have the arms so you need someone else. Or spend some time and swap the OEM arm back in on one side just to compare it to the other side.

[07JeepXK]

Well you would need the measurements from a XK with the OME lift without the arms to compare to yours with the arms. You and Jake both have the arms so you need someone else. Or spend some time and swap the OEM arm back in on one side just to compare it to the other side.

Oh there will be no swapping oem control arms back on this XK...lol I made the mistake of putting the bolts back in the same way it took them out. Didint realize it until I was totally finished with the install. That means the struts would need to come back out again. Im going to mess with it tomorrow night after work and see what I can figure out. There might be limiting straps in my future.