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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 M 137. 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 337AK1:AK fitted with alternator instead of generator ;M 337B:Increased max running speed (3000 rpm) - increased power - 173 kW (235 hp). ;M 337BK:Aerobatic version of B. ;M 337C:Increased compression ratio - 185 kW (252 hp) ;M 137A: Unsupercharged version of M 337 - 134 kW (180 hp) take-off power. Aerobatics allowed. ;M 137AZ:As M 137A, with filtered air feed 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Avia M 337」の詳細全文を読む スポンサード リンク
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