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The Lycoming O-320 is a large family of naturally aspirated, 320 cu in (5.2 L) air-cooled, horizontally-opposed four-cylinder, direct-drive engines produced by Lycoming Engines. Introduced in 1953, it is commonly used on light aircraft such as the Cessna 172 and Piper Cherokee , and remains in production as of 2024.
The O-340 was designed by Lycoming specifically for the TEMCO-Riley D-16A Twin Navion project. Jack Riley, the designer of that aircraft was interested in an upgraded version of the Lycoming O-320 that would produce more power to give the Twin Navion a better single-engine service ceiling. The Lycoming O-360 was still years away in development ...
By 1961, Lycoming produced 600 to 700 engines per month. [17] Its most successful post-war products were a series of air-cooled flat-4 and flat-6 general aviation engines. Most famous among these are the O-320 and O-360 four-cylinder engines, and the O-540 six-cylinder engine.
New production (1973 on) version. Powered by 140 hp (104 kW) Lycoming O-320 engine. Model 2T-1A-2 More powerful version - powered by 180 hp (134 kW) Lycoming IO-360 engine. Model 2T-1A-E Homebuilt Experimental Plans-built [10] Model 2T-1E 95 hp (71 kW) American Cirrus Ensign engine. About twelve built. [1] X A 2T-1E used for aero-engine testing.
Certified on 15 December 1987, the T67C was the last of the "civilian" variants, based on the T67B with an uprated 160 hp (120 kW) Lycoming O-320 engine, but without fuel injection and inverted-flight systems found on the T67M variants. Two blade constant speed prop.
The ECi O-320 is part of a family of normally aspirated, air-cooled, four-cylinder, direct-drive engines developed for certified and experimental aircraft. Its cylinders are arranged in horizontally opposed configuration and a displacement of 320 cubic inches (5.24 L). It is based on the Lycoming O-320 engine with ECi cylinder assemblies. [1][2]
Improved Rallye 100ST powered by 110 hp (82 kW) Lycoming O-235-L2A, [27] 76 built. [9] Can be operated as a three/four-seat aircraft if spins are prohibited. [27] SOCATA 150SV Garnement Improved version of Rallye 150ST with 155 hp (116 kW) Lycoming O-320-D2A, 5 built. [9] SOCATA 180T Galerian
The designation indicates that the design engine was originally a Lycoming O-320 of 160 hp (119 kW). The L-160 features a strut-braced high-wing, a two-seats-in-side-by-side configuration enclosed cockpit, fixed tricycle landing gear or conventional landing gear and a single engine in tractor configuration. Floats and skis can also be fitted.