Mercedes-Benz M118 engine
The M118 is a four-stroke inline-four engine produced from 1965 to 1972.
| Mercedes-Benz M118 | |
|---|---|
 | |
| Overview | |
| Manufacturer | Audi |
| Also called |
|
| Production | September 1965 – July 1972 |
| Layout | |
| Configuration | Inline 4 |
| Displacement |
|
| Cylinder bore | 80 mm (3.15 in) |
| Piston stroke | 84.4 mm (3.32 in) |
| Block material | Cast iron |
| Head material | Cast iron |
| Valvetrain | SOHC |
| Compression ratio |
|
| Combustion | |
| Fuel system | Carburetor |
| Fuel type | Gasoline |
| Cooling system | Water cooled |
| Output | |
| Power output | 40–66 kW (54–90 PS; 54–89 hp) |
| Torque output | 113–147 N⋅m (83–108 lb⋅ft) |
| Chronology | |
| Successor | Volkswagen EA827 engine |
Design
The M118 was originally developed by Mercedes-Benz for the mass-produced vehicle segment.[2] It was first used by Audi in the F103, after Daimler AG sold the company to Volkswagen.[3] The engine replaces the previous two-stroke engines, and features a water-cooled Solex carburetor that allowed for smoother operation and enhanced efficiency.[4] It was later revised several times with increased displacements and reduced compression ratios for improved reliability.[5] The success of the M118 allowed Audi to expand into more upscale market segments.[6]
Engines
| Displacement | Power | Torque | Years |
|---|---|---|---|
| 1.5 L; 91.3 cu in (1,496 cc) | 40 kW (54 PS; 54 hp) at 4,750 rpm |
113 N⋅m (83 lb⋅ft) at 2,600 rpm |
1968–1972 |
| 1.7 L; 103.6 cu in (1,697 cc) | 53 kW (72 PS; 71 hp) at 5,000 rpm |
127 N⋅m (94 lb⋅ft) at 2,800 rpm |
1965–1968 |
| 55 kW (75 PS; 74 hp) at 5,000 rpm |
127 N⋅m (94 lb⋅ft) at 3,000 rpm |
1968–1972 | |
| 59 kW (80 PS; 79 hp) at 5,000 rpm |
132 N⋅m (97 lb⋅ft) at 5,000 rpm |
1966–1968 | |
| 1.8 L; 107.4 cu in (1,760 cc) | 66 kW (90 PS; 89 hp) at 5,300 rpm |
147 N⋅m (108 lb⋅ft) at 3,000 rpm |
1966–1971 |
M118
40 kW version
- 1968–1972 Audi 60[7]
53 kW version
- 1965–1968 Audi 72
55 kW version
- 1968–1972 Audi 75
59 kW version
- 1966–1968 Audi 80
66 kW version
- 1966–1971 Audi 90
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References
- Patrascu, Daniel (2018-04-12). "Mercedes-Benz Remembers It Helped Create Audi of Today". autoevolution. Retrieved 2018-08-28.
- Torchinsky, Jason. "How This Gorgeous Mercedes Prototype Made Modern Volkswagen Possible". Jalopnik. Retrieved 2018-08-28.
- "1965 Audi 72 | Hagerty – Classic Car Price Guide". www.hagertyinsurance.co.uk. Retrieved 2018-08-28.
- "Sixty Years Ago, Daimler-Benz Bought Auto Union". Road & Track. 2018-04-12. Retrieved 2018-08-28.
- Oswald, Werner (2001). Deutsche Autos 1945–1990, volume 4 (in German). Motorbuch Verlag. p. 264. ISBN 3-613-02131-5.
- "Mercedes Made Audi Into What It Is Today". Motor1.com. Retrieved 2018-08-28.
- "History's irony: Mercedes created the Audi we know today - MercedesBlog". MercedesBlog. 2016-05-04. Retrieved 2018-08-28.
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