I don't believe that the torsion bar in the lower A arm would cause a popping noise. It is constantly under tension unless you fully decompress the suspension while jumping or something. Plus, you described it as only happening when you take sharp slow turns. There are other components you have yet to consider. First though, is it a 4wd or 2wd? I haven't heard you mention that yet. I would key in on your steering system, idler arm and pitman arm bushings. They would make a "clunk" under tension in a tight turn but may seem fine on a lift. If it were popping numerous times through the turn I would consider wheel/hub bearings or cv axles (if 4wd) Also, A arm bushings... when you have the truck lifted, the tires and decompressed suspension would have tension on these areas and make it hard to find any play in them. Still thinking it is steering related.
I just don't see how a torsion bar in a tight turn would make a "clunk" Unless it is ready to fall out of the socket... even then, why only in a turn? You would most likely feel that on every little bump in the road.. not a turn.
Last edited by Toyz; 02-06-2012 at 10:11 AM.