So basically both units are totally rebuildable, the only difference is one uses a normal spicer ball joint and one uses a uni-ball.
So basically both units are totally rebuildable, the only difference is one uses a normal spicer ball joint and one uses a uni-ball.
2007 4.7 Liter XK | Front Modified OME HD Lift | Rear 4" Superlift | JBA UCA's | Rusty's Rear Adjustable Track Bar | Rysty’s Adjustable Upper and Lower Rear Control Arms w/Heim Joints | Mickey Thompson Classic III 17x9 Wheels | 315/70R17 Goodyear Duratracs | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front Electronic Locker | Rear Heat/AC Delete
Correct.
The result of this difference is that the HD UCA's from HM Engineering can be used for every lift available. The UCA's with the spicer ball joint can only be used with a lift for were the UCA's angle is corrected for.
This is a statement placed on an other forum on the exact same UCA's:
"Poly bushing are overated IMHO. First off they are the same bushing that are in your stock arms, which means wide availability.
Secondly they take out some road impact and don't require special grease like most poly bushings do.
Right now these are based a 2.5" lift geometry (over stock). This pretty much covers everyone except for the 4" Superlift (and equivalent) guys, since they are designed to run stock geometry arms.
Those as well as ones for stock/lowered WK/XK's will be on there way".
In other words stock / 4" lift require a different set of arms than the 2" lift. This is only because of the limited travel of the spicer ball joint.
Also, the poly bushings might be overrated but I do have read in several threads (on other forums) that the UCA bushings are worn / damaged on XK's and WK's. IMHO, better overrated. This means that they are probably don't have to be replaced at all.
Since the HM Engineering UCA's are designed with desert racing /experience in mind they might be overrated. Personally, I don't mind that at all, especially not on a critical part like this one.
2007 4x4 Limited, 5.7L Hemi
Mods:
OME HD Lift, 1/4" Rusty's strut plates, HD UCA's
American Racing ATX Mojave wheels with Goodyear Duratrac 265/70 R17 tires
Mopar skid plates & sport utility bars, 12" billet antenna
My main concern is alignment issues. I'm about to spend another grand on a new set of tires and hate to have the outter treads wear like the last set due to not being able to align it properly.
2007 4.7 Liter XK | Front Modified OME HD Lift | Rear 4" Superlift | JBA UCA's | Rusty's Rear Adjustable Track Bar | Rysty’s Adjustable Upper and Lower Rear Control Arms w/Heim Joints | Mickey Thompson Classic III 17x9 Wheels | 315/70R17 Goodyear Duratracs | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front Electronic Locker | Rear Heat/AC Delete
Last edited by Knappster; 01-29-2011 at 09:44 AM.
WOW what a diff in the angel man. Your on the six inch lift correct?
The JBA's would even be less of an angle because they correct a little for the lift. This will be a must have upgrade for anyone lifting the XK over the 2" lift. If it straightened your 6" lift out little it would be solid on the 4" lifts. not sure if you have posted it already but a shot of your CV angle would be cool.
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