Lycoming IO-390-C3B6 Aircraft Engine 210 HP 2700 RPM

Basic Information

Place of Origin:	America
Brand Name:	Lycoming
Certification:	FAA 8130-3
Model Number:	Lycoming IO-390-C3B6 Engine

Minimum Order Quantity:	1 EA
Payment Terms:	,T/T

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Rated Power:	210 Horsepower	Rated Speed:	2700 Rpm
Cylinder Diameter:	5.319 Inches	Stroke:	4.375 Inches
Displacement:	389 Cubic Inches	Compression Ratio:	8.9:1
Firing Order:	1-3-2-4	Valve Rocker Arm Clearance:	0.028-0.080 Inches
Transmission Ratio:	1:1	Rotation Direction:	Clockwise
Net Weight:	315 Pounds	Moment Of Inertia:	X-axis (rotation Axis Parallel To The Centerline Of The Crankshaft) Is 59.3in·lb·s²; Y-axis (rotation Axis Parallel To The Centerline Of The Cylinder) Is 86.7in·lb·s²; Z-axis (vertical Direction) Is 45.2in·lb·s²
Highlight:	C3B6 Lycoming IO-390 Engine , IO-390-C3B6 Lycoming Engine , Lycoming IO-390-C3B6 Engine

Lycoming IO-390-C3B6 Engine

Technical Specifications

Attribute	Value
Rated power	210 horsepower
Rated speed	2700 rpm
Cylinder diameter	5.319 inches
Stroke	4.375 inches
Displacement	389 cubic inches
Compression ratio	8.9:1
Firing order	1-3-2-4
Valve rocker arm clearance	0.028-0.080 inches
Transmission ratio	1:1
Rotation direction	clockwise
Net weight	315 pounds
Moment of inertia	X-axis (rotation axis parallel to the centerline of the crankshaft) is 59.3in·lb·s²; Y-axis (rotation axis parallel to the centerline of the cylinder) is 86.7in·lb·s²; Z-axis (vertical direction) is 45.2in·lb·s²

Product Description

The IO-390-C3B6 is a popular choice for builders and pilots looking for a reliable, high-performance engine for light aircraft.

Part Numbers

New	Rebuilt	Overhaul
ENPL-RT11143	RENPL-RT11143	HENPL-RT11143

Detailed Specifications

Engine Type: 6-cylinder, horizontally opposed (flat-six)
Displacement: 541.5 cubic inches (8.87 liters)
Power Output: 300 horsepower (224 kW) at 2,700 RPM
Compression Ratio: 8.7:1
Fuel System: Fuel injection (Continental Bendix RSA-5AD1 fuel injector)
Cooling System: Air-cooled
Weight: Approximately 390 lbs (177 kg) dry
Fuel Type: 100LL aviation gasoline (avgas)
Oil Capacity: 12 quarts (11.4 liters)

Key Features

Fuel Injection: Provides better fuel efficiency and performance compared to carbureted engines.
Air-Cooled Design: Simplifies maintenance and reduces weight.
High Power-to-Weight Ratio: Makes it suitable for a variety of aircraft, including high-performance singles and light twins.
Reliability: Known for its durability and long service life with proper maintenance.

Applications

The IO-540-AE1A5 is commonly found in aircraft such as:

Cessna 206 Stationair
Piper PA-32 Cherokee Six
Mooney M20K
Aerostar 600

Maintenance and TBO

TBO (Time Between Overhauls): Typically 2,000 hours, depending on operating conditions and maintenance practices.
Maintenance: Regular inspections, oil changes, and adherence to Lycoming's service bulletins are critical for longevity.

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