BMW M337

BMW M337
Overview
Manufacturer BMW
Production 1952-1958
Combustion chamber
Configuration straight-6
Chronology
Predecessor BMW M78
Successor BMW OHV V8 engine

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.[1][2]

Models

Model Displacement Power Torque Year
337/1 1,971 cc 48 kW (65 PS; 64 hp) 129 N·m (95 lb·ft) 1952-1954
337/2 1,971 cc 54 kW (73 PS; 72 hp) 130 N·m (96 lb·ft) 1954-1955
337/3 2,077 cc 54 kW (73 PS; 72 hp) 135 N·m (100 lb·ft) 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.[3]


Applications:

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.[1][3][4] The compression ratio for this engine is 6.8:1.


Applications:

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 to 135 N·m (100 lb·ft) at 2500 rpm.[1][3]


Applications:

References

  1. 1 2 3 BMW - Bavaria's Driving Machines, Norbye, p.88
  2. Auto- und Motorrad-Welt (in German) (Köln: Deutscher Sportverlag Kurt Stoof), 20 March 1953. Missing or empty |title= (help)
  3. 1 2 3 "BMW [6enligne.net] moteur BMW, BMW M337". 6enligne.net. Retrieved 2012-06-03.
  4. The Ultimate History of BMW, Noakes, p.48
Bibliography
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