Bob Engelhardt on Mon, 19 Mar 2012
16:59:10 -0400 typed in rec.crafts.metalworking the following:
There were 2 heads at the dump, each for 2 cylinders - from a a v4
engine I'd guess. Each of the heads had 1 cylinder badly "burned", as
shown. Anybody know what happened?

Yep.

Valve snapped off. Beat the hell out of the piston, and the head.
I'd wager the head is aluminum, with fins - 'cause it sure looks like
a VW head after it ate the valve.

Air cooled VWs are notorious for doing that: you have to check the
valve settings every time you service it, and replace the valves ~
50,000 miles - just to be safe.

On third look, that's a four valve head. Doubt it is a VW, but
.... the valve snapped off and beat it all to hell and back.
--
pyotr
Go not to the Net for answers, for it will tell you Yes and no. And
you are a bloody fool, only an ignorant cretin would even ask the
question, forty two, 47, the second door, and how many blonde lawyers
does it take to change a lightbulb.