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:
- 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.[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:
- 1955-1958 501/3
References
- Bibliography
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| Family | 1950s | 1960s | 1970s | ||||||||||||||||||||||||||||||||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||||||||||
| 4-cylinder petrol | M10 >> | ||||||||||||||||||||||||||||||||||||||||
| 6-cylinder petrol | M337 | ||||||||||||||||||||||||||||||||||||||||
| << M78* | M30 >> | ||||||||||||||||||||||||||||||||||||||||
| M20 >> | |||||||||||||||||||||||||||||||||||||||||
| M88 / M90 >> | |||||||||||||||||||||||||||||||||||||||||
| 8-cylinder petrol | OHV V8 | ||||||||||||||||||||||||||||||||||||||||
| *made in East Germany as EMW | |||||||||||||||||||||||||||||||||||||||||
