So what causes the bushes to nip up when installed? Is it because the tube is just off round?
Physics and metallurgy......
Quite simply, you are forcing a soft hollow round piece of metal into a harder round piece of metal as you don't want the smaller piece of metal to fall out.
The smaller piece of metal being ever so slightly larger than the hole in which it has to fit.
Which causes the sidewalls of the bush to distort and the kingpin not to fit the bushes, hence the need to ream them so the distortion is removed and the king pin fits the bushes once again.....
Arwyn
