Cast-iron cylinder head combustion chamber with two valves, spar…

Macro shot of a bare cast-iron cylinder head deck surface, showing one wedge combustion chamber with the intake and exhaust valve faces seated flush, the threaded spark plug hole above them, and cast identification numbers stamped in the chamber floor. Head bolt holes and neighboring chambers with light corrosion frame the shot.

AI caption September 2007 · Photo 10 of 102