on the top suspension of the MK. does the locking nut go to the inside of the car or the outside The nut is the one that goes through the top arm.

i suspect it goes on whichever side has space, though i dont know where that falls on the average MK. shouldnt make much difference, cos if it comes loose its usless anyway, doesnt matter if it falls off altogether or not!

The nut goes on the outside. If you've got enough thread on the inside then you must be running a ton of camber.

The camber is about zero (which is where it should be) when the thread is just about flush with the back (inside) of the suspension arm thingy.