Building A looper Beast

[R Austin]

On the first trial run of heads, the core had 4 posts that met the plug side of the head to insure positioning of the core and would be welded shut with a plug. They are eliminated in the final head allowing the heads and all other cast parts to go straight to heat treat to bring them to T6 state. The following pics are of a head that I sacrificed to ensure core position and wall thickness around the combustion chamber.