Characteristics of the M113 engine
| Characteristics | Data |
|---|---|
| Production | Stuttgart-Bad Cannstatt Plant, AMG Plant Affalterbach |
| Engine make | M113 |
| Years of production | 1997-2005 |
| Cylinder block material | Aluminum |
| Power system | Injector |
| Engine type | V-shaped |
| Number of cylinders | 8 |
| Valves per cylinder | 3 |
| Cylinder diameter, mm | 89.9 |
| Piston stroke, mm | 84 |
| Compression ratio | 10 |
| Engine displacement, cc | 4266 |
| Engine power, hp/rpm | 272/5750, 279/5750, 306/5850 |
| Torque, Nm/rpm | 390/3000, 400/3000, 410/3250 |
| Oil consumption, gr./1000 km | Up to 800 |
| Oil volume in the engine, l | 8.0 |
| Oil change interval, km | 7000-10000 |
| Operating temperature, °C | ~90 |
| Engine life, thousand km | Factory: – |
| Practical: 300+ | |
| Tuning, potential, hp | 500+ |
| Tuning without loss of resource | – |
Car models
The M113 E43 engine has been used in the following vehicles:
- Mercedes-Benz C 43 AMG (W202)
- Mercedes-Benz CLK 430 (C208)
- Mercedes-Benz E 430 (W210)
- Mercedes-Benz ML 430 (W163)
- Mercedes-Benz S 430 (W220)
Reliability and construction of the engine Mercedes M113 E43 4.3
The eight-cylinder M113 E43 engine was introduced in 1997 in the Mercedes-Benz E 430 W 210 and positioned as a replacement for the M 119 E 42. The new powertrain was a V8 version of the M112 E32: the aluminum cylinder block with 90° camber from the V6 received two additional cylinders and lost the balancer shaft. The cylinder heads are similar aluminum, one camshaft (SOHC) and three valves per cylinder: two intake, one exhaust. Inlet valves are 36mm in diameter, exhaust valves 41mm. It still uses a variable valve timing system, hydrocompensators and a variable-length intake manifold.
The timing is driven by a chain, which has a service life of approximately 200 thousand kilometers. The control system is Bosch Motronic ME 2.8.
The engine was designed for Mercedes models with the index 430.
Together with this engine were produced: M113 E50, M113 E55 and M113 E55 ML.
Production of the power unit continued until 2005, after which the 113th was replaced by a new V8 with the marking M 273 E46 and a working volume of 4.7 liters.
Modifications of M 113 E 43 engines
- M113.940 (1997 – 2003) – version with an output of 279 hp at 5750 rpm, torque 400 Nm at 3000 rpm. It was installed on Mercedes-Benz E 430 W210.
- M113.941 (1997 – 2002) – analog of M 113.940 for Mercedes-Benz S 430 W220.
- M113.942 (1997 – 2005) – analog of M 113.940 for Mercedes-Benz ML 430 W163. Power 272 hp at 5750 rpm, torque 390 Nm at 3000 rpm.
- M113.943 (1998 – 2001) – analog of M 113.940 for Mercedes-Benz CLK 430 C208.
- M113.944 AMG (1998 – 2002) – finalized version of M 113.940, installed camshafts with more aggressive characteristics, a different intake manifold and a new exhaust system. The engine was assembled at the AMG Plant Affalterbach and installed on the Mercedes-Benz C 43 AMG W202.
- M113.948 (2000 – 2005) – analog of M 113.940 for Mercedes-Benz S 430 4Matic W220.
Problems and disadvantages of Mercedes M113 engines
- The main problem of power units of this family is the huge oil consumption
- The main cause of oil stagnation is usually caused by blistered oil caps
- Because of contamination of crankcase ventilation the lubricant is pressed through the gaskets or oil seals
- Also the source of leaks is often the oil filter housing and heat exchanger
- Crankshaft pulley is another common engine failure
MOTOR RATING: 4+