Quote: The only way I ever cured a spinning ball joint is to put a jack under the lower ball joint and force the taper portion into he spindle until it stopped spinning.
Stop being an engineer and start forcing thing like a mechanic.
ditto....Jack the lower BJ up into the control arm, unbolt it from the spindle and quit fooling with the upper BJ. Tighten the lower BJ up, put the cotter pin in and then put the 2 bolts in the spindle. Make sure you line the cotter pin hole up front to back!
To be fair, the LCA ball joint castle nut is a total PIA to get to with the UCA balljoint in place. Although, your way doesn't sound too bad either. So I'm assuming the cotter pin will be a PIA if the hole is facing wheel to frame rails?
