Mercedes-Benz M08 engine

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Mercedes-Benz M08
Overview
Manufacturer Mercedes-Benz
Production1928-1940
Layout
Configuration Straight-eight
Displacement 4.6–5.0  L (281–305  cu in)
Cylinder bore 80–82.5  mm (3.1–3.2  in)
Piston stroke 115  mm (4.5  in)
Valvetrain 16-valve, DOHC, two-valves per cylinder
Compression ratio 5.0:1-6.6:1 [1]
Combustion
Supercharger Naturally aspirated
Roots-type supercharger
Fuel system Carburetor
Fuel type Gasoline
Oil system Dry sump
Output
Power output 79–110  hp (59–82  kW)
Torque output 175–190  lb⋅ft (237–258  N⋅m)
Chronology
Successor Mercedes-Benz M19 engine
Mercedes-Benz M07 engine

The Mercedes-Benz M08 engine is a naturally-aspirated and supercharged, 4.6-liter and 5.0-liter, straight-8 engine, designed, developed and produced by Mercedes-Benz; between 1928 and 1940. [2] [3]

Contents

Overview

Typ Nürburg 460 engine (1928–1929)

The engine was a 4,622cc straight-8 side-valve unit for which maximum output was given as 80 PS (59 kW; 79 hp) at 3,400 rpm

Typ Nürburg 460 engine (1929–1932)

For 1929, the company's first eight-cylinder model was extensively reworked by the newly appointed Technical Director Hans Nibel. The 8-cylinder engine and most other technical details were carried over unchanged from the 1928 car including the ratios chosen for the four-speed manual transmission.

Typ Nürburg 500 engine (1931–1933)

In 1931, the car became available with an enlarged 4,918cc engine which now also featured a twin downdraft carburettor. Maximum output was now listed as 100 PS (74 kW; 99 hp) at 3,100 rpm and claimed top speed increased to 110 km/h (69 mph). [4]

Typ 500 engine (1932–1936)

In 1932 the W08 lost the “Nürburg” name, being sold simply as the Mercedes-Benz Typ 500. The 4,918cc 100 PS (74 kW; 99 hp) side-valve engine with its twin downdraft carburetor was unchanged, as were the four-speed optional overdrive transmission, wheelbase, and list of standard body types. [5]

Typ 500 engine (1936–1939)

1936 saw an increase in claimed maximum output from the engine to 110 PS (81 kW; 108 hp) at 3,300 rpm. The cylinder capacity at 4,918cc was unchanged, but there was a marginal raising of the compression ratio. The claimed top speed was now raised further to 123 km/h (76 mph). [6] The model was discontinued in 1939 without any immediate successor. Twenty-four years passed before the next 8-cylinder engined Mercedes-Benz appeared; with the Mercedes-Benz 600, in 1963.

Applications

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The Mercedes-Benz M21 engine is a naturally-aspirated, 2.0-liter, straight-6, internal combustion piston engine, designed, developed and produced by Mercedes-Benz; between 1933 and 1936.

The Mercedes-Benz M18 engine is a naturally-aspirated, 2.9-liter, straight-6, internal combustion piston engine, designed, developed and produced by Mercedes-Benz; between 1933 and 1937.

The Mercedes-Benz M11 engine is a naturally-aspirated, 2.6-liter, straight-6, internal combustion piston engine, designed, developed and produced by Mercedes-Benz; between 1929 and 1935.

The Mercedes-Benz M04 engine is a naturally-aspirated, 3.0-liter and 3.1-liter, straight-6, internal combustion piston engine, designed, developed and produced by Mercedes-Benz; between 1927 and 1928.

The Mercedes-Benz M03 engine is a naturally-aspirated, 3.0-liter, straight-6, internal combustion piston engine, designed, developed and produced by Mercedes-Benz; between 1926 and 1927.

The Mercedes-Benz M02 engine is a naturally-aspirated, 2.0-liter, straight-6, internal combustion piston engine, designed, developed and produced by Mercedes-Benz; between 1926 and 1933.

The Daimler-Mercedes M9456 engine is a supercharged and naturally-aspirated, 6.2-liter to 6.4-liter, straight-6, internal combustion piston engine, designed, developed and produced by Mercedes-Benz, in partnership with Daimler; between 1924 and 1929.

The Daimler-Mercedes M836 engine is a naturally-aspirated and supercharged, 3.9-liter to 4.0-liter, straight-6, internal combustion piston engine, designed, developed and produced by Mercedes-Benz, in partnership with Daimler; between 1924 and 1929.

References

  1. ↑ "Mercedes-Benz M08 Engine". Sportlich-Leicht.
  2. ↑ "Mercedes-Benz M08 Engine".
  3. ↑ "MERCEDES BENZ Typ Nurburg Cabriolet F (W08) specs & photos - 1933, 1934, 1935, 1936, 1937, 1938, 1939".
  4. ↑ Oswald, p 233
  5. ↑ Oswald, pp 260, 262 & 263
  6. ↑ Oswald, p 263
  7. ↑ "Mercedes-Benz W08 (1928 - 1939)".
  8. ↑ "MERCEDES BENZ Typ Nurburg Cabriolet F (W08) 500 (M08 III) vs MERCEDES BENZ Typ Nurburg Cabriolet F (W08) 500 Compare Cars - AutoIntro.net".
  9. ↑ "MERCEDES BENZ Typ Nurburg Sedan (W08) 460 - AutoIntro.net".
  10. ↑ "WheelsAge".
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