Browsing thru Hemmings Classic Car, may 2020 issue I read an article about a 1934 Chev pick up truck with a 207 cu. in. engine. To quote from this article: "The head also incorporated eight small stamped copper nozzles pressed in near the exhaust valves, used to direct streams of water at the valves and seats, keeping them cooler."
I am having a hard time understanding how this functioned. Could someone explain to me how this worked, not mixing water with oil, or oil with water?
Thanks
Tom Schmutz