The Mercedes M112 E24 engine, which debuted in 1997, was designed for vehicles with an index of 240. The M112 E28 cylinder block, modified for an 83.2 mm piston, serves as the foundation for the newest member of the family.
M112 E24, M112 E26, M112 E28, M112 E32, M112 E37, M272 E25, M272 E30, M272 E35, M276 DE30, and M276 DE35 are all members of the V6-family.
The M112 E28 cylinder heads were modified to fit the new cylinder block; the intake and exhaust valves’ diameters were lowered to 30 and 34 mm, respectively. Other than that, these are identical aluminum single-shaft cylinder heads with three valves per cylinder, hydraulic compensators, and a variable valve timing system. M112 E24 intake manifold with movable length. The timing chain drive has a service life of about 200,000 kilometers. Engine management system Bosch Motronic ME 2.0.
Specifications
| Production years | 1997-2000 |
| Displacement, cc | 2398 |
| Fuel system | distributed injection |
| Power output, hp | 170 |
| Torque output, Nm | 225 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 18v |
| Cylinder bore, mm | 83.2 |
| Piston stroke, mm | 73.5 |
| Compression ratio | 10.0 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | yes |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 7.5 |
| Fuel type | petrol |
| Euro standards | EURO 3/4 |
| Fuel consumption, L/100 km — city — highway — combined |
14.3 7.5 10.0 |
| Engine lifespan, km | ~275 000 |
| Weight, kg | 160 |
Disadvantages of the M112 E24 engine
The crankshaft pulley’s destruction is the engine series’ hallmark failure.
Increased oil consumption is somehow connected to the remaining engine issues.
Grease seeps out from under the gaskets and seals as a result of crankcase ventilation contamination.
Here, hardened valve stem seals are typically the primary source of oil burnout.
The heat exchanger and oil filter housing are also potential sources of lubrication leaks.