Man I wish I knew that before I went all in. Ill keep an eye on them. I don't go to riding parks or rock climb . Mostly, I'll use it to get down narrow dirt roads so I don't scratch up my new truck. We will be taking it to the woods for hunting and driving it around with the top off in the summer. If I ever get all the little odds and ends addressed. Thanks. E
Cant find control arm relocation brackets (geometry bracket) for TJs
- Thread starter EROCK
- Start date
I emailed Core to see what options and cost it is to get Jonnie Joints for all eight arms. Would I need to get JohnnyJoints on both ends of every control arm or just get them on the adjustable ends of all control arms? Thanks. E
Dick Cepek and Superlift made drop brackets years ago. They were not very popular as you can tell.
If you're not really flexing her out, then I don't know the harm in just getting JJ's for one end. I know it will cut down on articulation, but I don't know if it will relieve the stress on the brackets enough to prevent breakage. Someone smarter than me would have to say for sure. ...maybe @Jerry Bransford or @mrblaine can help answer that more fully.
I'll double check here in a day or two but I'm 99.9% sure that one JJ has more than enough misalignment to work even if the other end can't move at all.
That would be good information to have, both for the OP and me, as I'm contemplating which arms to get. Thanks!
I'll have to do some actual measuring to verify, but playing with a drafting program, there is 20 degrees of axle slope with 12" of travel per side for a total of 24" height difference total. A JJ has about 32 degrees of misalignment.
I believe that will be roughly 15 degrees either direction from the middle which is what I need to check. If that is correct, then the Clevite would be subjected to 5 degrees of misalignment at full articulation with 12" of travel each side. There are several assumptions I made to get there so I need to verify.
That is golden information right there...I would actually enjoy modeling the rear (or front) suspension of my jeep...I have solidworks installed on my work AND home computers. However, I don't have anything more than a tape measure and angle finder to make accurate measurements. Maybe that is enough though...
You don't need an angle finder. All you need is a few measurements.
Width between shock mounts on axle.
Width of axle at outside of tires.
Shock travel.
Basic- lay out a horizontal line at axle width.
Set points same distance in from each end to establish shock mount points.
Set vertical line ungrouped to represent vertical travel of shock above and below axle line.
Grab one end of horizontal line and raise it to top of shock travel line.
Do the opposite with other end.
Apply angle calculator to determine slope of axle line. That is your full articulation angle.
If you are working off of a horizontal line representing the ground and you put a vertical line at the end of the axle representing tire size, you can use that to measure wheel travel which will be greater than shock travel due to the overhang past the shock mounting points.
Rubicon Express used a clevite on one end and thier undampened JJ clone on the other. Other than the increase in NVH they did not seem to cause any mount issues.
Great info fellas! So, if I put a JJ on the adjustable end of my "Tier 1" Cores all around. I could theoretically pull my sway bar links and tackle most conditions? Once again, theoretically? One last big question.....
If I leave my sway bar links connected, could I get by with my current set up, leaving the Clevites on both ends of the of the Core "Tier one" control arms?
If I leave my sway bar links connected, could I get by with my current set up, leaving the Clevites on both ends of the of the Core "Tier one" control arms?
I did some rough calculations on mine a while back. I don't recall the numbers except that even with 12" of shock travel at full flex, a single Johnny Joint was enough to accommodate the misalignment.
I wouldn't...your rear can flex pretty well, even with the sway bars connected. In fact, you don't really want to ever disconnect the rear. It will not limit flex...well, usable flex anyway. I'd say even connected, the standard clevite bushing when combined with arms that cannot add more flex by twisting, will be dangerous to the mounts. I honestly don't know why people sell arms like that...
If that is the case, why does everyone make short arms with a pair of high misalignment joints? Sounds like the Tier 2 Core arms with a single JJ will be plenty for a TJ with 2" of lift and 10" travel shocks (my eventual build plan)
One reason to not keep the bonded rubber bushing would be its limits of rotation. On a stock arm, anything beyond the stock up and down travels will contribute to the wear of the bushing. At some point the bonded rubber will want to tear away from the housing or sleeve.
That makes sense. That is what the Synergy bushing is supposed to eliminate, right? Its got some mechanism to allow rotation.
I actually have a 6in lift that measures 5.5 sitting on the ground. Think a single jj might still work?