Avia M 337 Explained

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 337AK1:AK fitted with alternator instead of generator

M 337B:Increased max running speed (3000 rpm) - increased power - .

M 337BK:Aerobatic version of B.

M 337C:Increased compression ratio -

M 137A

Unsupercharged version of M 337 take-off power. Aerobatics allowed.

M 137AZ

As 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

References

• Book: Taylor. John W R . Jane's All The World's Aircraft 1980-81. 1980. Jane's. London. 0-7106-0705-9 .
• http://www.walterjinonice.cz/historie-spolecnosti-walter

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