Continental O-200
The Continental C90 and O-200 are a family of air-cooled, horizontally opposed, four-cylinder, direct-drive aircraft engines of 201 in3 (3.29 L) displacement, producing between 90 and 100 horsepower (67 and 75 kW). Built by Continental Motors these engines are used in many light aircraft designs of the United States, including the early Piper PA-18 Super Cub, the Champion 7EC, the Alon Aircoupe, and the Cessna 150.