Just for the record, I've rec'd several replies off list confirming
this. Apparently this process wasn't exclusive to MG either.
You learn something new every day.
Larry Hoy
> -----Original Message-----
> > Oh man, is this for real?
> >
> > Larry Hoy
> >
> > > -----Original Message-----
> > > During manufacture, because of accuracy limitations on the
> > > production machines it was not possible to get the diameter
> > > of the cylinder boring exactly "right". It was possible
> > > however to quickly measure the finished diameter and grade
> > > each cylinder according to how much it varied from the
> > > nominal bore. This grading was then stamped on the top of the
> > > block along side each cylinder.
> > >
> > > Pistons were similarly graded and stamped.
> > >
> > > At the assembly stage, piston and cylinder grades were
> > > matched to get the best possible fit.
> > >
> > > Cheers
> > > Ian F
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