O320

O320 is a designation commonly associated with a range of aircraft engines produced by Lycoming Engines, specifically the Lycoming O-320 series. These engines are four-cylinder, air-cooled, horizontally opposed piston engines widely used in general aviation aircraft. The O-320 series has been in production since the late 1950s and remains popular due to its reliability, simplicity, and versatility.

The O-320 engines typically develop power outputs ranging from 150 to 160 horsepower, depending on the specific model and configuration. They operate using a thumb-operated throttle, carbureted fuel systems, and are designed for both fixed-wing aircraft and experimental aircraft builders. The engines are known for their robust performance, ease of maintenance, and widespread availability of parts.

Variants of the O-320 include engines optimized for different operational requirements, such as those equipped with different cylinder arrangements, compression ratios, or propeller drives. Some versions feature fuel injection systems instead of carburetors, offering improved fuel efficiency and performance. The O-320 series is used in numerous aircraft models, including Cessna 150, 152, and 172 series, as well as other light aircraft.

The design of the O-320 emphasizes simplicity and durability, making it suitable for training, personal, and recreational flying. Its modular architecture facilitates repairs and overhauls, contributing to its longevity on the fleet. The engine’s widespread deployment and long production history have established it as a staple in light aircraft propulsion.

Overall, the Lycoming O-320 engine series is regarded as a reliable, versatile powerplant that has significantly contributed to the development and operation of general aviation aircraft worldwide.