Mercedes-Benz M113 engine

Mercedes-Benz M113/M155
Overview
Manufacturer	Daimler AG
Production	1998–
Chronology
Predecessor	Mercedes-Benz M119
Successor	Mercedes-Benz M273, Mercedes-Benz M156 (most AMG applications), Mercedes-Benz M152 (SLK55 AMG)

The Mercedes-Benz M113 (and similar M155) engine is a gasoline-fueled, 4-stroke, spark-ignition internal-combustion V8 automobile piston engine family used in the 2000s (decade). It is based on the similar M112 V6 introduced in 1998.

The standard Mercedes-Benz M113s are built in Untertürkheim, Germany, while the AMG versions are assembled at AMG's Affalterbach, Germany plant. M113s have aluminum engine blocks and aluminum SOHC cylinder heads with two spark plugs per cylinder. The cylinders are lined with silicon/aluminum, and the heads have 3 valves per cylinder. Other features include SFI fuel injection, fracture-split forged steel connecting rods, a one-piece cast camshaft, and a magnesium intake manifold.

The M113 E43 is a 4.3 L (4266 cc) version. Bore is 89.9 mm and stroke is 84 mm. Output is 279 PS (205 kW) at 5750 rpm with 295 ft·lbf (400 Nm) of torque at 3000-4400 rpm. Output for the variant used in the C43 AMG is uprated to 302 bhp (225 kW) and 302 ft·lbf (409 N·m).

Applications:

The M113 E50 is a 5.0 L (4966 cc) version bored to 97 mm and stroke is 84 mm. Output is 306 hp (228 kW) at 5600 rpm with 339 ft·lbf (460 Nm) of torque at 2700 to 4250 rpm. Active Cylinder Control variable displacement technology is optional.

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Wikipedia