Thanks Guys! A guy on ebay has some military surplus 2 cylinder air cooled engines for sale. They are 16 cubic inch disp. The gov. rated hp is 3 hp. He says it is more like 10hp. At 262 cc's, I don't think that they are 10 hp. Kinda neat engines, he wants $135. 00 ea plus $35. 00 shipping. Anyhow,I wanted to convert to cc's to get an idea how big.
Bob, I saved that table you posted... Handy!... Chris