After the war, this plant was converted to produce the T53 turboshaft engine, one of its more successful designs.

It also leased the government-owned Stratford Army Engine Plant in Stratford, Connecticut and produced Wright radials under license. In 1939 Cord re-organized all of his aviation holdings into the AVCO group, at which point the engine manufacturing company became 'AVCO Lycoming'. In the meantime, the Smith Engineering Corporation, an early manufacturer of controllable pitch propellers had been purchased by Cord and moved to Williamsport. These companies closed their doors in 1937, after which Lycoming switched to exclusively designing and producing engines for aviation. By 1931, the company was supplying automotive engines to only three companies: Auburn, Cord and Duesenburg, still all under the control of Cord. However, these clients each slowly went out of business or switched to Continental engines for their vehicles. Through the 1920s and -30s, Lycoming had still been supplying automotive manufacturers with engines. There was apparently some interest in using it on the Convair B-36 Peacemaker bomber, but the 28-cylinder Pratt & Whitney R-4360 Wasp Major four-bank radial was used instead. This design also experienced problems, and was only ready for use at the very end of World War II, when the aviation world was turning to turbojets and turboprop engines to power future large aircraft. Undeterred by the O-1230/H-2470's failure, Lycoming turned to an even larger design, the 36-cylinder XR-7755, the largest aviation piston engine ever built. The Curtiss XF14C was originally intended to be powered by the H-2470, but the engine's poor performance led to the adoption of an alternative radial engine on the prototype. Another attempt was made to rescue the design by stacking two O-1230s to make the 2вЂ‰300 hp (1вЂ‰700 kW) H engine H-2470 but the only design to use it, the Vultee XP-54, never entered production. However, by the O-1230's entry into service, it had been surpassed by other designs and the US$500вЂ‰000 investment was not recouped. The 1вЂ‰200 hp (895 kW) O-1230 was Lycoming's attempt to produce an engine based on the United States Army Air Corps hyper engine concept, and used a variety of features to produce nearly 1 hp/ in 3 (46 kW/L) of engine displacement. In the 1930s, Lycoming made a number of attempts to develop successful high-power aircraft engines. This was a fairly successful design, and was used widely in light aircraft, including Cord's Travel Air. In 1929, Lycoming produced its first aviation engine, the nine-cylinder R-680 radial. A supercharged version, generating 325 horsepower, was installed in the Duesenberg SJ and SSJ models. This powerplant produced 265 horsepower, six times the power of a contemporary Model A Ford.

Lycoming also produced a double overhead cam straight 8 used in the legendary Duesenberg J series. displacement that produced 125 horsepower. Among the engines Lycoming produced for Cord was an L-head straight-eight engine of 298.5 cu. Eventually Lycoming became Auburn's principal supplier, and in 1927 Errett Lobban Cord bought the company, placing it under his Auburn Manufacturing umbrella group.

To handle the capacity, a new foundry complex was built in Williamsport that year. By 1920, Lycoming was producing 60,000 engines a year, with a 2,000-strong workforce. In 1910, the company supplied its first automobile engine to Velie, and during the early post- World-War-I era, the company was a major supplier to Auburn (which produced the Auburn, Cord, and Duesenberg lines). ( December 2008) ( Learn how and when to remove this template message)Д«y 1907, the manufacture of sewing machines had become unprofitable for Demorest, and the company was sold and restructured as the Lycoming Foundry and Machine Company, shifting its focus toward automobile engine manufacture.

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Lycoming Engine Serial Number Lookup