Lycoming LIO-320 Aircraft Engine - 320 Cubic Inch Air-Cooled 150-160 HP Helicopter Powerplant

The Lycoming LIO-320 is a horizontally opposed, air-cooled, four-cylinder aircraft engine manufactured by Lycoming Engines. Part of the widely used O-320 series, this engine is specifically designed for helicopter applications while also being suitable for fixed-wing aircraft.

• Engine Type: Horizontally opposed (flat-four) configuration, air-cooled
• Displacement: 320 cubic inches (5.24 liters)
• Power Output: 150 to 160 horsepower depending on model configuration
• Fuel Type: Aviation gasoline (100LL avgas)
• Weight: 240 to 260 pounds (109 to 118 kg)

This engine series is primarily used in light helicopters including the Robinson R22 and Schweizer 300 models, as well as various fixed-wing aircraft. Known for exceptional durability and reliability, the LIO-320 is a preferred choice for training and general aviation applications.

• LIO-320-B1A: Common helicopter variant with proven performance
• LIO-320-C1A: Alternative configuration with optimized power output

Regular maintenance is essential for optimal performance, including scheduled oil changes, spark plug replacements, and comprehensive inspections following manufacturer guidelines.