Ball joint deletes

[arcjeeper]

Who's running ball joint deletes? I just lifted my rig, including a brand new UD44 front axle on 38s. From the get go I'm getting death wobble between 25-35 mph and only when one tire rolls over a bump. At that speed, if both tires roll over a bump there is no issue. High speeds no problem and steering feels solid. I'm thinking the spicer ball joints that the new axle came with are maybe just too weak right off the bat.

I've checked already, everything is tight, axle centered. Minor camber issue on my alignment but from what I understand that wouldn't contribute to death wobble.

I am most intrigued by the new American Iron Offroad ball joint deletes.

Curious to hear from people running those, or Dynatracs version.

 

[JeepJeezy]

What is your caster at?

 

[arcjeeper]

6.5 degrees

 

[JeepJeezy]

6.5 degrees

That's way too much! You want to be 4 to 4.5.

 

[arcjeeper]

Offroad alignment shop, as well as second offroad shop didn't seem to think caster was off so I just went with what they said. I suppose I could just lengthen the upper control arms a bit to bring it forward. But that should make wobble more likely than less shouldn't it? Stock is 6 degrees, and I have no driveline issues.

 

[JeepJeezy]

According to your spec sheet your caster is off. Red is bad green is good. Too much or too little caster is a prime candidate for wobble. You want your caster closer to 4.5-4. The lowers will center your axle front to back. The uppers will give your caster.

 

[Speartip]

According to your spec sheet your caster is off. Red is bad green is good. Too much or too little caster is a prime candidate for wobble. You want your caster closer to 4.5-4. The lowers will center your axle front to back. The uppers will give your caster.

Exactly . Looking at alignment print out castor is off by quite a bit .
And I Quote ;

You want your caster between 4 and 4.5 degrees. This is what factory calls for. Once you do that, your driveline angle will automatically be where it needs to. If you go higher on the caster, you will have improved steering but you could risk getting driveline vibrations.

I think what is happening right now when you hit a bump with a single tire .
The front axle starts oscillating , ie DW. It's because the geometry is off with castor.
Even though your lifted , running larger tires , adjustable control arms and new track bar etc.
The geometry of the front end compenets have to remain as was originally designed .
Drag Link/Trackbar parallel.
Castor 4.5 degrees.
Would most def bring to someone that knows how to align Jeeps and be specific about
4.5 degrees of castor . That should solve the issue .
If it doesn't than possibly one of the new MC pieces has a bad end .