Avia M 337

M 337
Right side view of a Walter M337; the front cylinder is hidden by the engine cowling
Type six-cylinder inverted inline piston engine
National origin Czechoslovakia
Manufacturer Walter Aircraft Engines/Avia/LOM
Major applications Let L-200 Morava
Zlín Z 43



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

Applications

Specifications (M 337)

Data from Jane's All The World's Aircraft 1980-81 [1]

General characteristics

Components

Performance

References

  1. J W R Taylor 1980, p.692.
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