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BMW M337

The BMW M337 is a straight-6 OHV piston engine which replaced the BMW M78 and was produced from 1952-1958.
Built to power BMW's first new car after the Second World War, the M337 engine was a significant update of the M78. The cylinder head was revised, the inlet manifold was a new design, and a reinforced crankshaft with bigger, more modern bearings was used.
Manufacturer
BMW
Production
1952 - 1958
Predecessor
BMW M78
Successor
BMW OHV V8 engine
Configuration
straight-6

Models

Model
Displacement
Power
Torque
Year
337/1
1,971 cc
48 kW (65 PS; 64 hp)
129 Nm (95 lbft)
1952-1954
337/2
1,971 cc
54 kW (73 PS; 72 hp)
130 Nm (96 lbft)
1954-1955
337/3
2,077 cc
54 kW (73 PS; 72 hp)
135 Nm (100 lbft)
1955-1958

M337/1

The first version of the M337 engine has a displacement of 1971 cc. It produces 48 kW (65 PS; 64 hp) at 4400 rpm and 129 N·m (95 lb·ft) at 2000 rpm.
Applications:
  • 1952-1954 501

M337/2

In 1954, a revised engine producing 54 kW (73 PS; 72 hp) at 4400 rpm and 130 N·m (96 lb·ft) at 2500 rpm was released. The compression ratio for this engine is 6.8:1.
Applications:
  • 1954-1955 501A
  • 1954-1955 501B

M337/3

This version was bored out by 2 mm (0.1 in) , which increased displacement to 2077 cc. Despite the increase in displacement and an increased in compression ratio of 7.0:1, the engine produced no more power than the previous version. However torque increased 135 Nm (100 lbft) at 2500 rpm.
Applications:
  • 1955-1958 501/3
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Last updated on 15 August 2012 at 00:09.

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