World Library  
Flag as Inappropriate
Email this Article

Lycoming O-360

Article Id: WHEBN0001953625
Reproduction Date:

Title: Lycoming O-360  
Author: World Heritage Encyclopedia
Language: English
Subject: Piper PA-28 Cherokee, Beechcraft Musketeer, Piper PA-44 Seminole, Rockwell Commander 112, Diamond DA40
Collection: Aircraft Piston Engines 1950–1959, Boxer Engines, Lycoming Aircraft Engines
Publisher: World Heritage Encyclopedia

Lycoming O-360

Lycoming IO-360-A1B6
Type Piston aero-engine
Manufacturer Lycoming Engines
First run c.1955
Major applications Piper Cherokee
Cessna 172
Robin DR400

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), with the basic O-360 producing 180.[1]

The engine family has been installed in thousands of aircraft, including the Cessna 172, Piper Cherokee/Archer, Grumman Tiger, and many home-built craft. It has a factory rated time between overhaul (TBO) of 2000 hours[1] or twelve years.[2]

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.[3] The Lycoming IO-390 is an O-360 which has had its cylinder bore increased by 316 inch (4.76 mm), developing 210 hp (157 kW) .[4][5]


  • Series 1
  • Variants 2
  • Applications 3
  • Specifications (O-360-A1A) 4
  • See also 5
  • References 6
  • External links 7


The O-360 family of engines comprise 167 different models with 12 different prefixes. All have a 361-cubic-inch (5.92-liter) displacement and 5.125 and 4.375 in (130.2 and 111.1 mm) bore and stroke.[3][3][6][6][7][8]

  • 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[9]
  • 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



Piper PA-44-180 Seminole features two Lycoming O-360 engines
An LIO-360 on the starboard wing of a Piper PA-34-200 Seneca I.

Specifications (O-360-A1A)

Data from Type Certificate Data Sheet E-286[3]

General characteristics


  • Fuel type: 91/96 avgas minimum grade[12]
  • Oil system: 8 US qt (8 l) dry sump
  • Cooling system: air-cooled


See also


  1. ^ a b Lycoming (2004). "360 Series" (PDF). Retrieved 2008-09-16. 
  2. ^  
  3. ^ a b c d  
  4. ^  
  5. ^  
  6. ^ a b  
  7. ^  
  8. ^  
  9. ^  
  10. ^ Mooney Aircraft, Inc. (March 1967). Executive 21 Owners Manual. 
  11. ^ a b  
  12. ^ Lycoming (2010). "Lycoming Service Instruction 1070Q" (PDF). Retrieved 3 November 2011. 

External links

  • Lycoming Homepage
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.