I'll add that the pistons are not "scrap bin" parts as the skirts could be hit with Scotchbrite and coated to be perfectly usable.
Just to expound on this: The procedure which has proven to work well in salvaging pistons in this condition for us has been to glass-bead (new clean material please!
) the damaged skirts, this beats down the crowns of the peaks pushing some of this material back to a useful placement, also tends to work well at lifting out the foreign particulate impinged in the surface, and tends to "fluff-up" through the peening process the surface thereby blending and recovering some of the lost diameter of the piston, and then yes, "Scotch-Brite" the surface, by hand (no flap-wheels & drill motors please!
) thoroughly to remove any impinged blasting media, and to smooth and lay down the surface additionally. This is not difficult but does require some technique in order to acquire pleasing results. And yes the further inclusion of a coating process is a nice option but necessarily a requirement for function.
Scott.
