ok here goes trying to explain this one.

if i turn my steering fully right i get a hell of a clunk/bang almost sounds like a spring moving ?? had a look but cant see anything out of place.
i have replaced the anti roll bar rubber but that didnt help.

any ideas???

 

check LCA bushing housing moving in the arm and lower knuckle ball joint.

 

Also check your shock mounts up front. I had one of the small rubber bushings split and fail on my driver's upper shock mount in the engine bay and it sounds like a similar issue to what you're having.

 

cheers well worth a look