Throttling back is probably what saved it from something far more serious, don't you think..?
I agree Nige . The engine was at 750 rpm. Just wish I Had shut it completely down before it came apart . My fault . From a mechanics standpoint I was trying to figure out why it was missing then buy the time the pecking noise started it was to late. All happened pretty quick. I think a wrist pin retainer came loose then got in the intake ports of the sleeve is what happened . This 8-V-71 uses the thin stamped steel wrist pin retainers where you just drive them in . No snap ring or groove . They also seal the oil in the wrist pin boss.
Yeah stinkeycat , Its amazing all the different combinations the Military had for the Detroit's on land and at sea.