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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 , with the basic O-360 producing .

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 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.

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.

Series

The O-360 family of engines comprises 167 different models with 12 different prefixes. All have a displacement and bore and stroke.

  • 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
  • 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

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

;O-360

;LO-360

  • Beechcraft Duchess
  • Piper PA-44-180 Seminole

;IO-360

;LIO-360

thumb|An LIO-360 on the starboard wing of a [[Piper PA-34 Seneca|Piper PA-34-200 Seneca I.]]

  • Piper PA-34 Seneca I
  • Diamond DA42

;AIO-360

  • Stephens Akro

;AEIO-360

  • Aero-Cam Slick 360
  • Aviat Eagle II
  • American Champion Super Decathlon
  • Extra EA-200
  • FFA AS-202 Bravo
  • Great Lakes Sport Trainer
  • Grob G 115E
  • Mudry CAP 10
  • Peña Capeña
  • Pitts Special
  • Tech Aero TR 200
  • Valmet L-70 Vinka
  • Zlín Z 242

;HIO-360

  • Enstrom F-28
  • OH-23 Raven
  • Schweizer 300

;LHIO-360

  • Silvercraft SH-3
  • Silvercraft SH-4

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|coolingsystem=air-cooled

|power= at 2700&nbsp;rpm

|specpower=

|compression=8.5:1

|fuelcon= to per hour

|specfuelcon=

|oilcon=

|power/weight=

|designer=

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|general_other=

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See also

References

  • Lycoming Homepage