| Mercedes-Benz M113/M155 | |
| Manufacturer: | Mercedes-Benz Mercedes-AMG (AMG) |
| Production: | 1997–2011 |
| Configuration: | 90° V8 |
| Valvetrain: | SOHC 3 valves x cyl. |
| Displacement: | 4266cc 4966cc 5439cc |
| Bore: | 89.9mm 97mm |
| Stroke: | 84mm 92mm |
| Power: | 279- |
| Torque: | 400- |
| Supercharger: | AMG-developed with intercooler |
| Predecessor: | Mercedes-Benz M119 |
| Successor: | Mercedes-Benz M273, Mercedes-Benz M156 (most AMG applications), Mercedes-Benz M152 (SLK 55 AMG) |
| Fueltype: | Gasoline |
| Fuelsystem: | Sequential fuel injection |
| Coolingsystem: | Water-cooled |
| Block: | Aluminium |
| Head: | Aluminium |
The Mercedes-Benz M113 (and similar M155) engine is a gasoline-fueled, spark-ignition internal-combustion V8 automobile engine family used in the 2000s. It is based on the similar M112 V6 introduced in 1997, then later phased out in 2007 for the M156 AMG engine and the M273 engine.
The standard Mercedes-Benz M113s were built in Untertürkheim, Germany, while the AMG versions were assembled at AMG's Affalterbach, Germany plant. M113s have aluminum/silicon (Alusil) engine blocks and aluminum SOHC cylinder heads with two spark plugs per cylinder. The cylinder heads have 3 valves per cylinder (two intake, one exhaust). Other features include sequential fuel injection, iron coated piston skirts, fracture-split forged steel connecting rods, a one-piece cast camshaft, and a magnesium intake manifold.
The M113 43 is a 4266cc version. Bore and stroke is NaNmm. Power output is 2790NaN0 at 5,750 rpm with 4000NaN0 of torque at 3,000 rpm. Output for the variant used in the C 43 AMG is uprated to 3060NaN0 at 5,850 rpm and 4100NaN0 at 3,250 rpm.
Applications:
The M113 50 is a 4966cc version with a bore and stroke of NaNmm. Power output is 3060NaN0 at 5,600 rpm with 4600NaN0 of torque at 2,700 to 4,250 rpm. The G 500 and ML 500 both use a detuned version of the 5-liter M113 engine and their output is 2960NaN0 and 2920NaN0 respectively. Active Cylinder Control variable displacement technology is optional.
Applications:
The M113 55 is a 5439cc version with the same 97mm bore as the M113 50/500 but with a longer 92mm stroke developed by Mercedes-AMG. These cars were the first to carry the 55 AMG title. Power output is 347to at 5,500–5,750 rpm with 510to of torque at 2,800–5,400 rpm. Many popular tuners such as Kleemann USA and AMG itself developed supercharger systems for this model, mirroring the later M113 E55 ML design.[1] The engine has a power output of 4000NaN0 at 5,750 rpm and 5190NaN0 of torque at 3,750 rpm in the SLK55 AMG Black Series.[2] [3]
Applications:
The M113 Kompressor is a supercharged and twin-intercooled version of the 5439cc M113. It is commonly referred to as "M113K" – where 'K' stands for Kompressor (supercharger). Power output varies depending on year and model, from 4690NaN0 at 6,100 rpm for the E 55 AMG to 5740NaN0 in the 2004–2006 CLK DTM AMG, with 700to of torque at 2,750–4,000 rpm. Many Mercedes-AMG enthusiasts consider the M113K as the last of the great Kompressor engines used by Mercedes-AMG excluding the Mercedes SLR McLaren. The M113K engine has also received praise for its reliability.[1] Mercedes-AMG replaced this model with their new 6.2 L naturally aspirated V8, making the transition from 55 AMG to the 63 AMG.
Applications:
The M155 is a version of the supercharged 5439cc M113 specifically for the Mercedes-Benz SLR McLaren. Power output is 6170NaN0 at 6,500 rpm with 7800NaN0 of torque at 3,250 rpm.[5] An uprated version with 6410NaN0 at 6,500 rpm and 8200NaN0 of torque at 4,000 rpm and 7250 rpm Rev Limit, featured in the 722 edition.[6]
Applications: