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| Mercedes-Benz M115 engine | |
|---|---|
 | |
| Overview | |
| Manufacturer | Mercedes-Benz |
| Production | 1968–1985[1] |
| Layout | |
| Configuration | Straight-4 |
| Displacement |
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| Cylinder bore |
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| Piston stroke |
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| Combustion | |
| Fuel type | Gasoline |
| Cooling system | Water cooled |
| Output | |
| Power output | 85–120 hp (63–89 kW; 86–122 PS) |
| Chronology | |
| Predecessor | Mercedes-Benz M121 engine |
| Successor | Mercedes-Benz M102 engine |
TheM115 engine family was astraight-4 automobile engine fromMercedes-Benz that was produced during the 1970s. This engine was a successor to theM121 and was replaced by the M102 engine. This engine differs from the M121 by its five-bearing crankshaft.[1] The engine was produced in several versions with differing volume, compression, and horse power according to its application.
The M115.920 is a 2.2 L (2,178 cc) engine with a power output of 103–105 hp (77–78 kW; 104–106 PS) and a bore and stroke of 87 mm × 92.4 mm (3.43 in × 3.64 in). This type shares the crankshaft with OM615 220D.
The M115.921 is a 2.2 L (2,178 cc) 85 hp (63 kW; 86 PS) engine.
The M115.923 is a 2.0 L (1,988 cc) 70 kW (95 PS; 94 hp) engine.
The M115.924 is a 2.2 L (2,178 cc) engine, producing 90–120 hp (67–89 kW; 91–122 PS), depending on compression.
The M115.926 is a 2.2 L (2,178 cc) engine, producing 63–70 kW (86–95 PS; 84–94 hp), depending on compression.
The M115.938 is a 2.0 L (1,988 cc) engine with a bore and stroke of 87 mm × 83.6 mm (3.43 in × 3.29 in). Power output is 70 kW (95 PS; 94 hp).
The M115.939 is a 2.0-litre 84 hp (63 kW; 85 PS) engine with reduced compression, which follows from a different head.
TheM115.951 is a 2.3-liter 110 hp (82 kW; 112 PS) engine.
The M115.952 is a 2.3 L (2,277 cc) engine with 89 hp (66 kW; 90 PS).
The M115.954 is a 2.3 L (2,307 cc) version with a 93.8 mm × 83.6 mm (3.69 in × 3.29 in) bore and stroke. Power output is 81 kW (110 PS; 109 hp).
The M 115.973 is a 2.3 L (2,307 cc) version with a 93.8 mm × 83.6 mm (3.69 in × 3.29 in) bore and stroke. Power output is 67–93 kW (91–126 PS; 90–125 hp).
The M 115.973 2.6 Brabus is a 2.6 L (2,587 cc) version with a 93.8 mm × 83.6 mm (3.69 in × 3.29 in) bore and stroke. Power output is 114 kW (155 PS; 153 hp).
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