Lycoming O-360 Information & Lycoming O-360 Links at HealthHaven.com

O-360
	Lycoming IO-360-A1B6
Type	Piston aero-engine
Manufacturer	Lycoming Engines
Major applications	Piper Cherokee; Cessna 172

For a similarly named, but differently constructed, aircraft engine by another manufacturer, see Continental IO-360.

The Lycoming O-360 is a family of four-cylinder, direct-drive, horizontally opposed, air-cooled, piston aircraft engines. Engines in the O-360 series produce between 145 and 225 horsepower (109 to 168 kW).^[1]

[edit] Design and development

There are 167 different models within the O-360 family of engines, with 12 different prefixes. This includes:^[2]^[3]^[4]^[5]

O-360 carbureted horizontally opposed engine series
HO-360 horizontal mounted engine series for helicopter installation
LO-360 identical to the same model O-360, but with the crankshaft rotating in the opposite direction for use on twin-engined aircraft to eliminate the critical engine.
TO-360 turbocharged engine series
LTO-360 turbocharged left-hand rotation engine series
IO-360 fuel injected horizontally opposed engine series
LIO-360 identical to the same model IO-360, but with the crankshaft rotating in the opposite direction
AIO-360 inverted mount, fuel injected engine series
AEIO-360 aerobatic, fuel injected engine series
HIO-360 horizontal mounted, fuel injected engine series for helicopter installation
LHIO-360 left-hand rotation, fuel injected, horizontal-mount helicopter engine.
TIO-360 turbocharged and fuel injected engine series

The O-360 series all have a displacement of 361 cubic inches (5.9 liters). Bore and stroke are 5.125 and 4.375 inches (130 and 111 mm) respectively.^[2]^[3]

The O-360 has a factory rated TBO (Time Between Overhaul) of 2000 hours.^[1] They have been installed in thousands of aircraft including Cessna 172s, Piper Cherokees/Archers, Grumman Tigers and many home-built aircraft.

By increasing the cylinder bore of the O-360 by ³⁄₁₆ inches, the engine was developed into the 210 hp (157 kW) Lycoming IO-390.^[6]^[7]

The first O-360 certified was the A1A model, certified on 20 July 1955 to United States CAR 13 effective March 5, 1952 as amended by 13-1 and 13-2.^[2]

[edit] Variants

Main article: List of Lycoming O-360 variants

[edit] Applications

Piper PA-44-180 Seminole features two Lycoming O-360 engines

O-360

LO-360

Piper PA-44-180 Seminole

IO-360

LIO-360

Piper PA-34 Seneca I

AEIO-360

HIO-360

LHIO-360

[edit] Specifications (O-360-A)

General characteristics

Type: 4-cylinder air-cooled horizontally opposed aircraft piston engine
Bore: 5.125 in (130 mm)
Stroke: 4.375 in (111 mm)
Displacement: 361 in³ (5.9 L)
Dry weight: 280 - 301 lb (127 - 137 kg)

Components

Fuel type: 100LL avgas
Cooling system: Air-cooled

Performance

Power output: 180 hp (135 kW) at 2,700 rpm at sea level
Specific power: 0.50 hp/in³ (22.9 kW/L)
Compression ratio: 8.5:1
Fuel consumption: 10 US gal (37.9 L/h) at 65% power, 10.5 USG (39.8L/h) at 75% power
Power-to-weight ratio: 0.60 - 0.64 hp/lb (0.98 - 1.1 kW/kg)

[edit] See also

[edit] References

^ ^a ^b Lycoming (2004). "360 Series" (PDF). http://www.lycoming.com/engines/series/pdfs/360ci%20Engine%20Insert.pdf. Retrieved 2008-09-16.
^ ^a ^b ^c Federal Aviation Administration (December 2003). "TYPE CERTIFICATE DATA SHEET NO. E-286 Revision 19". http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/AE9ABB706DA3412986256E4E00746651?OpenDocument&Highlight=o-360. Retrieved 2009-01-17.
^ ^a ^b Federal Aviation Administration (April 2004). "TYPE CERTIFICATE DATA SHEET NO. 1E10 Revision 22". http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/d53c5aa69b61adde862574c9004eeb11!OpenDocument&Highlight=360&Click=852566E20067A2FD.85dedde3028f02e286257439004b6c7d/$Body/0.1B9E. Retrieved 2009-01-17.
^ Federal Aviation Administration (March 1986). "TYPE CERTIFICATE DATA SHEET NO. E26EA Revision 4". http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/73386F68804EBC5A8525670E0052E547?OpenDocument&Highlight=to-360. Retrieved 2009-01-18.
^ Federal Aviation Administration (March 1986). "TYPE CERTIFICATE DATA SHEET NO. E16EA Revision 5". http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/236C0F354301B8D28525670E0052CBDD?OpenDocument&Highlight=tio-360. Retrieved 2009-01-18.
^ Lycoming Engines (undated). "Lycoming IO-390-X". http://www.lycoming.textron.com/engines/series/390-series-engines.html. Retrieved 2009-01-07.
^ Lycoming Engines (2004). "Specialty datasheet" (PDF). http://www.lycoming.textron.com/engines/series/pdfs/Specialty%20insert.pdf. Retrieved 2008-12-20.
^ Mooney Aircraft, Inc. (March 1967). Executive 21 Owners Manual.
^ ^a ^b Federal Aviation Administration (February 2007). "Docket No. FAA-2006-25948; Directorate Identifier 2006-NE-32-AD; Amendment 39-14951; AD 2007-04-19". http://www.lion.com/FederalRegister/2007/February23/E7-2985.htm. Retrieved 2009-03-09.

[edit] External links

Wikimedia Commons has media related to: Lycoming O-360

Lycoming Homepage

[Lycoming360SpecSheet-0] Lycoming (2004). "360 Series" (PDF). http://www.lycoming.com/engines/series/pdfs/360ci%20Engine%20Insert.pdf. Retrieved 2008-09-16.

[E286-1] Federal Aviation Administration (December 2003). "TYPE CERTIFICATE DATA SHEET NO. E-286 Revision 19". http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/AE9ABB706DA3412986256E4E00746651?OpenDocument&Highlight=o-360. Retrieved 2009-01-17.

[1E10-2] Federal Aviation Administration (April 2004). "TYPE CERTIFICATE DATA SHEET NO. 1E10 Revision 22". http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/d53c5aa69b61adde862574c9004eeb11!OpenDocument&Highlight=360&Click=852566E20067A2FD.85dedde3028f02e286257439004b6c7d/$Body/0.1B9E. Retrieved 2009-01-17.

[E26EA-3] Federal Aviation Administration (March 1986). "TYPE CERTIFICATE DATA SHEET NO. E26EA Revision 4". http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/73386F68804EBC5A8525670E0052E547?OpenDocument&Highlight=to-360. Retrieved 2009-01-18.

[E16EA-4] Federal Aviation Administration (March 1986). "TYPE CERTIFICATE DATA SHEET NO. E16EA Revision 5". http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/236C0F354301B8D28525670E0052CBDD?OpenDocument&Highlight=tio-360. Retrieved 2009-01-18.

[IO390-5] Lycoming Engines (undated). "Lycoming IO-390-X". http://www.lycoming.textron.com/engines/series/390-series-engines.html. Retrieved 2009-01-07.

[SpecSheet-6] Lycoming Engines (2004). "Specialty datasheet" (PDF). http://www.lycoming.textron.com/engines/series/pdfs/Specialty%20insert.pdf. Retrieved 2008-12-20.

[Executive_21_POH-7] Mooney Aircraft, Inc. (March 1967). Executive 21 Owners Manual.

[FedRes23Feb07-8] Federal Aviation Administration (February 2007). "Docket No. FAA-2006-25948; Directorate Identifier 2006-NE-32-AD; Amendment 39-14951; AD 2007-04-19". http://www.lion.com/FederalRegister/2007/February23/E7-2985.htm. Retrieved 2009-03-09.

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