ok so i replaced my u joint and the hub bearing on my driver side and still i have a grinding popping sound when i take left hand curves. im not realy sure what else it can be. my only thought left is that the brake rotor is somehow rubbing just enough to hit weird when pressure is put on it. don't know if anyone else has had this problem but i need some help. thanks.

 

Or it's actually the right side making the noise! Or the diff is shot, or your tires are wide and are rubbing the control arm when you turn.

 

^^ Left turns put more force on the right-hand side. Might check the right side bearing/hub for play.