Hmmm. So if the rods are copper plated to prevent the rod body from being hardened, at what point would that copper be removed? When they were tossed into the NO-GO bin, were they still copper platted? At what point do the rods get shot peened?
Are production rods ever shot peened? If so why was 'shot peened' rods such a big deal for the first 50 years or so of hot rodding before the atermarket got involved? I remember getting my stock rods shotpeened because the factory units were not...
I would imagine the copper was removed after being heat treated maybe by being blasted, going into a shot tumbler or maybe by running thru an acid bath?
Don't know... just asking.
All I know is I'm taking some copper rods to my engine guy this week to be sized and have new bolts installed... these will replace the one's that were damaged during the last engine failure.