Ron
I found the French manufacturer of this cylinder head while searchig the net. The head is not cast, it's machined from aluminum. The water spigots are threaded into the head.
I also thought that the picture they sent med showed a blank insert but they claim that they've "invented" the combustion chamber design. I'm no expert but none of the features of their combustion chamber makes sense to me.
I expect to make a few more inserts of my own as soon as I learn how to calculate squish velocity.
Kent
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