C3 Head Casting and Modification Process

bring the next cylinder head about I got a few questions sure when Robert started making these heads how he you know spent three months welding them all solid and moving the spark plugs completely and all that what did that Head Start Life as what was what what came to the shop before it got all modified the early version of the C3 so the C3 would come in it had porosity issues it had meaning hitting inside the castings there'd be light fractures you'd have to basically pressure test it to see if there's any water leaks or air leaks in the cylinder head itself from putting air on the water inlet and Outlet put plates on the deck to make sure it hold pressure as long as there's no problem there then you would move forward into welding and you'd weld up some of the ports you weld up some of the valve angles the seats and then go through and machine it how you wanted it and a lot of times it was a lot of hand grinding a lot of hand grinding to clearance and port engine how you wanted it and then you would take what you call Snap gauges and snap mics where it would look like a a t tool that you compress the T on it and tighten it and you'd stick it down inside the port when you release it the little T would expand then you take it out and you put it in your micro calipers and you'd measure it and you'd measure you basically do a blueprint before we had Roamer arms and all this engineering technology you would do that manually you would you would measure every eighth of an inch and pour it all the way down and give the dimensional changes because that's how you made a basically a blueprint of that Port I was wondering how that worked yes so they actually it's like coordinates almost write them down and then you can duplicate it it was really hard right you had to do one set intake and exhaust on the floor if you got that down right and then a guy like John caley's you know that worked for Dad and they