Bare four-cylinder aluminum cylinder head, deck side up, with we…

Bare aluminum four-cylinder cylinder head on a workbench, deck face up, showing combustion chambers, valve seat inserts, brass valve guides and studs, with two chambers welded and filled. Fresh weld beads run across the deck between chambers and a cast number 18 appears at the end of the head.

AI caption October 2008 · Photo 20 of 26