The Avia M 337 (originally designated the Walter M337) is an inverted six-cylinder air-cooled inline engine. It was developed by the Czechoslovak company as a six-cylinder derivative of the four-cylinder M 332 engine, going into production in 1960. An unsupercharged version of the M 337 is designated as the LOM M137. Production transferred to Avia in 1964, and to Letecke Opravny Malesice (LOM) in 1992.
Variants M 337A Basic supercharged engine - not rated for aerobatics M 337R Modified for pusher installation M 337AK modified oil system for unlimited inverted flying. "Snap" aerobatics permitted. M 337AK1AK fitted with alternator instead of generator M 337BIncreased max running speed (3000 rpm) - increased power - . M 337BKAerobatic version of B. M 337CIncreased compression ratio - M 137A Unsupercharged version of M 337 take-off power. Aerobatics allowed. M 137AZAs M 137A, with filtered air feed M 437 Gear ratio 0.7:1
Applications AeroVolga LA-8C Falconar SAL Mustang Let L-200 Morava Zlín Z 526, Z 726 Zlín 142 Zlín Z 43
Specifications (M 337)
References
http://www.walterjinonice.cz/historie-spolecnosti-walter