Rear wheel play 12 to 6 NSR. Upper control arm or Bearing ?

[LastOne]

Ok thanks .. I can't hear any noise when I spin the wheel .. (which I presume I would if it was the bearing) .. so I'll go with the upper control arm and see what happens ... The bolt at the back of it looks like its going to be fun :-) !

If you want confirmation that the upper arm's outer bush is worn before you go to the effort of removing the back bolt, just remove the front/outer bolt, pull the outer end of the arm away from the hub carrier and test how firm the bush is by putting a screwdriver through the hole and twisting the bush about. If it's fine it will take quite a bit of force to twist the bush, but when it does twist it will do so smoothly. If it's worn, it will either move much too easilly like it's made of jelly, or stiffly but feeling notchy rather than smooth.

[autov]

As you can't be sure of the quality of the arms it's either o/e which probably are Very expensive or replace just the bushes with powerflex at least there made in the uk and guaranteed for life.