Mercedes-Benz M102 engine

Mercedes-Benz M102 engine
Mercedes-Benz M102 engine
Overview
Manufacturer	Mercedes-Benz
Production	1980–1993
Layout
Configuration	Straight-4
Displacement	1.8 L (1,797 cc); 2.0 L (1,997 cc); 2.3 L (2,299 cc); 2.5 L (2,498 cc); 2.5 L (2,463 cc);
Cylinder bore	89 mm (3.504 in); 95.5 mm (3.760 in); 97.3 mm (3.831 in);
Piston stroke	72.2 mm (2.843 in); 80.25 mm (3.159 in); 87.2 mm (3.433 in); 82.8 mm (3.260 in);
Valvetrain	SOHC 2 valves per cylinder; DOHC 4 valves per cylinder;
Compression ratio	10.5:1
Combustion
Fuel system	175 CDT Carburetor; Multi-point fuel injection
Management	Bosch KE-Jetronic
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	63–173 kW (86–235 PS; 84–232 bhp)
Torque output	154–245 N⋅m (114–181 lb⋅ft)
Dimensions
Dry weight	118 kg (260 lb)
Chronology
Predecessor	Mercedes-Benz M115 engine
Successor	Mercedes-Benz M111 engine

The M102 engine family is a inline-four gasoline automobile engine family built by Mercedes-Benz in the 1980s and early 1990s. It is a relatively oversquare engine with a large bore and short stroke compared to the M115 engine which was used during the same timeframe.