As you can see, the shoulder is on the outside with spring pressure holding it in the pocket. The weight of the car can overcome spring pressure and the ball joint can pop out if you jack in the wrong place. This one came out while the car was being lifted on a hoist. The tack weld is hard to see. If you are still skeptical, I can take a pic of the otherside of the ball joint where the tack is more noticeable. Think about the geometry of it. When the weight of the car is on it's wheels the ball joint is being forced into the hole. If you lift the car by the control arm the ball joint is being forced out of the hole. Do you really think I would make something like that up?
