Direct Drive Aircraft Engine IO-390 Four Cylinder Lycoming

Lycoming IO-390 Aircraft Engine

The Lycoming IO-390 series is a family of modern, fuel-injected, four-cylinder, horizontally opposed (flat-four), air-cooled aircraft engines designed for light general aviation and experimental aircraft. These engines are part of Lycoming's Thunderbolt series, which emphasizes performance, efficiency, and reliability.

Part Number

New	Rebuilt	Overhaul
ENPL-RT10592	RENPL-RT10592	HENPL-RT10592
ENPL-RT10620	RENPL-RT10620	HENPL-RT10620
ENPL-RT10714	RENPL-RT10714	HENPL-RT10714
ENPL-RT10696	RENPL-RT10696	HENPL-RT10696
ENPL-RT10656	RENPL-RT10656	HENPL-RT10656
ENPL-RT11113	RENPL-RT11113	HENPL-RT11113
ENPL-RT11143	RENPL-RT11143	HENPL-RT11143

General Specifications:

• Engine Type: 4-cylinder, horizontally opposed (flat-four)
• Displacement: 390 cubic inches (6.4 liters)
• Power Output: 210 horsepower (157 kW) at 2,700 RPM (varies slightly by model)
• Compression Ratio: 8.9:1
• Fuel System: Fuel injection (Airflow Performance or equivalent)
• Cooling System: Air-cooled
• Weight: Approximately 267 lbs (121 kg) dry
• Fuel Type: 100LL aviation gasoline (avgas) or unleaded alternatives (if approved)
• Oil Capacity: 8 quarts (7.6 liters)

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Lycoming IO-390 Aircraft Engine

Key Features:

• Fuel Injection: Provides precise fuel delivery, improved efficiency, and better performance at varying altitudes.
• Lightweight Design: Optimized for light sport, experimental, and modern certified aircraft.
• High Power-to-Weight Ratio: Delivers strong performance for its size.
• Modern Engineering: Incorporates advanced materials and design for improved durability and reliability.
• mooth Operation: The horizontally opposed configuration reduces vibration.

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Popular Models in the IO-390 Series:

The IO-390 series includes several models, each tailored for specific aircraft and performance requirements. Some of the most common models are:

• IO-390-C (IO-390-C1B6, IO-390-C3B6): 210 hp, used in experimental and light sport aircraft like the Van's RV-14 ,Cirrus SR20.
• IO-390-A (IO-390-A3A6, IO-390-A3B6): 210 hp, used in certified aircraft like the CubCrafters XCub.
• IO-390-EXP119: A variant designed for experimental aircraft with specific performance requirements.

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Applications:

The IO-390 series powers a variety of aircraft, including:

• Experimental and Kit-Built Aircraft: Such as the Van's RV-14, RV-10, and other high-performance homebuilts.
• Certified Aircraft: Like the CubCrafters XCub and Carbon Cub SS.
• Light Sport Aircraft: Ideal for modern LSA designs requiring a compact, high-output engine.

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Maintenance and TBO:

• TBO (Time Between Overhauls): 2,000 hours or 12 years, whichever comes first (under normal operating conditions).
• Maintenance: Regular oil changes, inspections, and adherence to Lycoming's service bulletins are essential for optimal performance.

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Advantages:

• Efficiency: Fuel injection and modern design contribute to better fuel economy.
• Performance: Ideal for aircraft requiring a compact, high-output engine.
• Versatility: Suitable for both experimental and certified aircraft.
• Reliability: Built with modern engineering and materials for enhanced durability.

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Comparison to IO-360 Series:

The IO-390 is a larger-displacement engine (390 cubic inches vs. 360 cubic inches) and produces more power (210 hp vs. 180-200 hp).

It is often chosen for aircraft requiring higher performance or for upgrades to older airframes.

Product Tags:

Direct Drive Aircraft Engine

      

Aircraft Engine Four Cylinder

      

Four Cylinder lycoming

      

Direct Drive Aircraft Engine IO-390 Four Cylinder Lycoming Images