BMW M337
| BMW M337 | |
|---|---|
| Overview | |
| Manufacturer | BMW |
| Production | 1952-1958 |
| Layout | |
| Configuration | OHV straight-6 |
| Chronology | |
| Predecessor | BMW M78 |
| Successor | BMW M30 |
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The BMW M337 is a straight-6 OHV petrol engine which was produced in three variants (M337/1, M337/2 and M337/3) from 1952-1958. Built to power BMW's first new car after the Second World War, the M337 engine was a replacement for the M78.
Compared with its M78 predecessor, the M337 features a revised cylinder head, a new inlet manifold and a reinforced crankshaft with bigger, more modern bearings.[1](p88)[2] As per the M78, the M337 has an iron block, an iron cylinder head and overhead valves with two valves per cylinder.[3](p46)
Models
| Model | Displacement | Power | Torque | Year |
|---|---|---|---|---|
| 337/1 | 1,971 cc (120 cu in) | 48 kW (64 bhp) | 129 N⋅m (95 lb⋅ft) | 1952-1954 |
| 337/2 | 54 kW (72 bhp) | 130 N⋅m (96 lb⋅ft) | 1954-1955 | |
| 337/3 | 2,077 cc (127 cu in) | 54 kW (72 bhp) | 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.[4]
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][4][3](p48) 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](p92)[4]
Applications:
- 1955-1958 501/3
References
- 1 2 3 Norbye, Jan P. (1984). BMW - Bavaria's Driving Machines. Skokie, IL: Publications International. ISBN 0-517-42464-9.
- ↑ "Auto- und Motorrad-Welt" (in German). Köln: Deutscher Sportverlag Kurt Stoof. 20 March 1953.
- 1 2 Noakes, Andrew (2008). The Ultimate History of BMW. Parragon Books. ISBN 978-1-4075-3512-8.
- 1 2 3 "BMW M337". www.6enligne.net. Archived from the original on 11 June 2012.
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| 1940s | 1950s | 1960s | ||||||||||||||||||||||||||||||||||||||
| 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 | |||||||||||
| straight-4 | M10>> | |||||||||||||||||||||||||||||||||||||||
| straight-6 | <<M78 | M78*>> | M30>> | |||||||||||||||||||||||||||||||||||||
| M337 | ||||||||||||||||||||||||||||||||||||||||
| <<M328 | ||||||||||||||||||||||||||||||||||||||||
| <<M335 | ||||||||||||||||||||||||||||||||||||||||
| V8 | OHV V8 | |||||||||||||||||||||||||||||||||||||||
| *made in the Soviet Occupation Zone by Autovelo | ||||||||||||||||||||||||||||||||||||||||