Lycoming O-360

O-360
	Lycoming IO-360-A1B6
Type	Piston aircraft engine
National origin	United States
Manufacturer	Lycoming Engines
First run	1952 ; 1963 (injected version)
Major applications	Cessna 172 R & S ; Cessna 177 Cardinal ; Mooney M20
Produced	1955–present
Developed into	Lycoming IO-390 ; Lycoming O-540 ; Lycoming IO-720

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 hp (110 and 170 kW), with the basic O-360 producing 180 hp (130 kW).^[1]

Quick Facts O-360, Type ...

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The engine family has been installed in thousands of aircraft, including the Cessna 172, Piper Cherokee/Archer, Grumman Tiger, and many home-built types. It has a factory rated time between overhaul (TBO) of 2000 hours^[1] or twelve years.^[2] O-360 family engines are also widely used in airboats, most notably in the Hurricane Aircats used by the US Army during the Vietnam War.^[3]

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.^[4] The Lycoming IO-390 is an O-360 which has had its cylinder bore increased by 3⁄16 inch (4.8 mm), developing 210 hp (160 kW).^[5]^[6]

Series

The O-360 family of engines comprises 167 different models with 12 different prefixes. All have a 361 cu in (6 L) displacement and 5.125 and 4.375 in (130 and 111 mm) bore and stroke.^[4]^[7]^[8]^[9]

O-360 carbureted series
HO-360 horizontally mounted series for helicopter installation
LO-360 same as O-360, but with left-hand rotating crankshaft, for use in pairs on twin-engined aircraft^[10]
TO-360 turbocharged series
LTO-360 turbocharged left-hand rotation series
IO-360 fuel-injected series
LIO-360 same as IO-360, but with left-hand rotating crankshaft
AIO-360 inverted mount (dry sump aerobatic) fuel-injected series
AEIO-360 aerobatic fuel-injected series
HIO-360 horizontally mounted fuel-injected series for helicopters
LHIO-360 left-hand rotation, fuel-injected, horizontally mounted for helicopters
TIO-360 turbocharged and fuel-injected series

Variants

Applications

O-360

LO-360

IO-360

LIO-360

AIO-360

Stephens Akro

AEIO-360

HIO-360

LHIO-360

Silvercraft SH-3^[14]
Silvercraft SH-4^[14]

Specifications (O-360-A1A)

Data from Type Certificate Data Sheet E-286^[4]

General characteristics

Type: Four-cylinder, dual magneto, horizontally opposed, four-stroke aircraft engine
Bore: 5.125 in (130 mm)
Stroke: 4.375 in (111 mm)
Displacement: 361 cu in (5.9 L)
Dry weight: 258 lb (117 kg)

Components

Fuel type: 91/96 avgas minimum grade^[15]
Oil system: 8 US qt (8 L) wet sump
Cooling system: air-cooled

Performance

Power output: 180 hp (130 kW) at 2700 rpm
Compression ratio: 8.5:1
Fuel consumption: 7.8 US gal (30 L) to 9 US gal (34 L) per hour^[16]

References

[1]
Lycoming (2004). "360 Series" (PDF). Archived from the original (PDF) on November 26, 2010. Retrieved September 16, 2008.
[2]
Lycoming Engines (July 8, 2013). "Recommended Time Between Overhaul Periods" (PDF). Archived from the original (PDF) on September 13, 2013. Retrieved July 8, 2013.
[3]
Enfield, Samuel; Burr, R.; Badgett, R.; et al., eds. (April 15, 1966). Airboats (PDF) (Technical report). San Francisco: Army Concept Team in Vietnam. p. 2. R-1590 0. Archived from the original (PDF) on August 3, 2020 – via DTIC.
[4]
Federal Aviation Administration (August 2009). "Type Certificate Data Sheet No. E-286 Revision 20" (PDF). Retrieved September 9, 2011.
[5]
Lycoming Engines (n.d.). "Lycoming IO-390-X". Retrieved January 7, 2009.{{cite web}}: CS1 maint: year (link)
[6]
Lycoming Engines (2004). "Specialty datasheet" (PDF). Retrieved December 20, 2008.
[7]
Federal Aviation Administration (January 10, 2018). "Type Certificate Data Sheet No. 1E10 Revision 28" (PDF). Retrieved January 26, 2019.
[8]
Federal Aviation Administration (March 1986). "Type Certificate Data Sheet No. E26EA Revision 4". Retrieved January 18, 2009.
[9]
Federal Aviation Administration (March 1986). "Type Certificate Data Sheet No. E16EA Revision 5". Retrieved January 18, 2009.
[10]
Federal Aviation Administration (July 13, 2004). "Airplane Flying Handbook" (PDF). Archived from the original (PDF) on September 21, 2012. Retrieved September 18, 2012.
[11]
Mooney Aircraft, Inc. (March 1967). Executive 21 Owners Manual.
[12]
https://hartzellprop.com/SERVICE-DOCUMENTS/SB/HC-SB-61-227.pdf
[13]
Hartzell Propeller Inc. (August 27, 2012). SERVICE BULLETIN HC-SB-61-227 (Rev 6) Page 19.
[14]
Federal Aviation Administration (February 2007). "Docket No. FAA-2006-25948; Directorate Identifier 2006-NE-32-AD; Amendment 39-14951; AD 2007-04-19". Archived from the original on July 13, 2011. Retrieved March 9, 2009.
[15]
Lycoming (2010). "Lycoming Service Instruction 1070Q" (PDF). Archived from the original (PDF) on November 17, 2011. Retrieved November 3, 2011.
[16]
"O-360, HO-360, IO-360, AIO-360, HIO-360 & TIO-360 Operator's Manual". lycoming.com. Retrieved July 11, 2018.

External links

Lycoming Homepage
"Operator's Manual O-360, HO-360, IO-360, AIO-360, HIO-360 & TIO-360 Series" (PDF). Lycoming. October 2005.

[Lycoming360SpecSheet-1] [1]
Lycoming (2004). "360 Series" (PDF). Archived from the original (PDF) on November 26, 2010. Retrieved September 16, 2008.

[TwelveYears-2] [2]
Lycoming Engines (July 8, 2013). "Recommended Time Between Overhaul Periods" (PDF). Archived from the original (PDF) on September 13, 2013. Retrieved July 8, 2013.

[SF-3] [3]
Enfield, Samuel; Burr, R.; Badgett, R.; et al., eds. (April 15, 1966). Airboats (PDF) (Technical report). San Francisco: Army Concept Team in Vietnam. p. 2. R-1590 0. Archived from the original (PDF) on August 3, 2020 – via DTIC.

[E286-4] [4]
Federal Aviation Administration (August 2009). "Type Certificate Data Sheet No. E-286 Revision 20" (PDF). Retrieved September 9, 2011.

[IO390-5] [5]
Lycoming Engines (n.d.). "Lycoming IO-390-X". Retrieved January 7, 2009.{{cite web}}: CS1 maint: year (link)

[SpecSheet-6] [6]
Lycoming Engines (2004). "Specialty datasheet" (PDF). Retrieved December 20, 2008.

[1E10-7] [7]
Federal Aviation Administration (January 10, 2018). "Type Certificate Data Sheet No. 1E10 Revision 28" (PDF). Retrieved January 26, 2019.

[E26EA-8] [8]
Federal Aviation Administration (March 1986). "Type Certificate Data Sheet No. E26EA Revision 4". Retrieved January 18, 2009.

[E16EA-9] [9]
Federal Aviation Administration (March 1986). "Type Certificate Data Sheet No. E16EA Revision 5". Retrieved January 18, 2009.

[FAA-10] [10]
Federal Aviation Administration (July 13, 2004). "Airplane Flying Handbook" (PDF). Archived from the original (PDF) on September 21, 2012. Retrieved September 18, 2012.

[Executive_21_POH-11] [11]
Mooney Aircraft, Inc. (March 1967). Executive 21 Owners Manual.

[12] [12]
https://hartzellprop.com/SERVICE-DOCUMENTS/SB/HC-SB-61-227.pdf

[HC-SB-61-227-13] [13]
Hartzell Propeller Inc. (August 27, 2012). SERVICE BULLETIN HC-SB-61-227 (Rev 6) Page 19.

[FedRes23Feb07-14] [14]
Federal Aviation Administration (February 2007). "Docket No. FAA-2006-25948; Directorate Identifier 2006-NE-32-AD; Amendment 39-14951; AD 2007-04-19". Archived from the original on July 13, 2011. Retrieved March 9, 2009.

[SI1070Q-15] [15]
Lycoming (2010). "Lycoming Service Instruction 1070Q" (PDF). Archived from the original (PDF) on November 17, 2011. Retrieved November 3, 2011.

[16] [16]
"O-360, HO-360, IO-360, AIO-360, HIO-360 & TIO-360 Operator's Manual". lycoming.com. Retrieved July 11, 2018.

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