If the lower went in at a slight angle outwards, that would lean the top of the tire inward, the knuckles would not move freely due to binding the upper. That would cause erratic steering that has very little to no return to center. It would not steer well at all. The lower pin rotates on a ball. It can handle all manner of misalignment with no issue. The upper is the problem, it floats up and down in a straight bore with zero misalignment. It would bind very easily if the lower balljoint was out at all. Out as in not straight with the upper.
The other thing we don't know is if the uppers were adjustable ball joints and rotated to shove the top of the knuckle outward. There are some from the factory that way and also the reason adjustables for the TJ even exist. There was a TSB for an out of spec alignment issue that was fixed with an adjustable ball joint(s).
What we need is a good clear pic of the lower showing the shoulder seated all the way around the machined surface it butts up against.
The other thing we don't know is if the uppers were adjustable ball joints and rotated to shove the top of the knuckle outward. There are some from the factory that way and also the reason adjustables for the TJ even exist. There was a TSB for an out of spec alignment issue that was fixed with an adjustable ball joint(s).
If he has had the kit for quite awhile, it is possible we missed a pair that are out of spec. If he has had it less than a year, that likelihood goes way down. The possibility also exists that someone checked them and didn't get it right. As I said, we are not perfect but since we found an out of spec part more than 2 years ago, we do a 100% inspection.Just my .02 but from the OPs description of how it felt when they landed home and the (un)likelihood of getting a pair of bad parts that are wrong in the same way either from Spicer or from BMB...this seems like the most likely scenario here.
We all assume that Spicer is the OEM balljoint. I've removed 100's and I still don't know how to very exactly determine that they are Spicer other than communal accepted knowledge.That was news to me, and good to know.
I also don't know the history of the jeep (unless it was posted and I missed it) but I wouldn't bet money that I could tell a 10 year old ball joint from the original if it was Spicer, so I don't know that it can be ruled out that the axle didn't land a jump and bend the inners or the housing and then get Spicer offset joints installed as the fix.
Something is definitely askew but when you look at this pic you can see that the inner C and the knuckle appear to be correctly oriented. Almost like the ball joints are being dumb once weight is being applied to them.
View attachment 461002
This all makes sense, as soon as I am back at the Jeep tomorrow I will get pictures of the old ball joints and how the new ones are installed. And start checking angles
The ball joints āpoppedā in further with each crank of the press, until it firmly bottomed out and the press noticeably got very tough to turn. Any further and it felt like I was going to break the press. I was also aware of the shoulders being flush with the C. I really donāt think this is the problem but I will triple check.
Negative, no shims on anything.
Yes. Tires are toast. The brakes and steering preparation for 35s. Plus a slew of other parts. Trying to get this work done and get it aligned before the new tires.
Why wouldn't Dana use Dana-Spicer ball joints for their axles? I dunno why they'd use a different brand for an integral part of a Dana-Spicer axle since Dana-Spicer makes ball joints, u-joints, etc.. It's not like a seal that Dana-Spicer doesn't make.We all assume that Spicer is the OEM balljoint. I've removed 100's and I still don't know how to very exactly determine that they are Spicer other than communal accepted knowledge.
Why wouldn't Dana use Dana-Spicer ball joints for their axles? I dunno why they'd use a different brand for an integral part of a Dana-Spicer axle since Dana-Spicer makes ball joints, u-joints, etc.. It's not like a seal that Dana-Spicer doesn't make.
Why wouldn't Dana use Dana-Spicer ball joints for their axles? I dunno why they'd use a different brand for an integral part of a Dana-Spicer axle since Dana-Spicer makes ball joints, u-joints, etc.. It's not like a seal that Dana-Spicer doesn't make.
Because it is up to the customer (in this case Jeep) what parts are installed in those housings. If it were not there would not have been all the ball joint issues with the Dodge pickups after they had Spicer stop using the same ball joints that the Fords used.
I also don't fully believe that any I would buy over the counter at the dealer are quite the same as what was put in at the factory.
I've always wondered why my brake pads on my new car or pickup last forever but replacements wear quickly.
do you replace or turn the rotors or just throw new pads on it?
Your gonna call me out in the presence of the brake guru...I usually try to change the rotors as well but won't say that's the case 100% of the time. I can remember when the new rotor quality was so shitty I used to tell people to turn new rotors. This was years ago and was probably a value line of rotor but still.
Also the brake kit was ordered march of this year. Standing by to take things apart further, but with how far out that tire is, I feel like something would blatantly stand out here.