The Mercedes M112 E24 engine appeared in 1997 and was intended for models with an index of 240. The youngest member of the family is based on the M112 E28 cylinder block, modified for a 83.2 mm piston.
The V6-family includes: M112 E24, M112 E26, M112 E28, M112 E32, M112 E37, M272 E25, M272 E30, M272 E35, M276 DE30, M276 DE35.
The cylinder heads from the M112 E28 were adapted to the new cylinder block, the diameter of the intake valves was reduced to 30 mm, the exhaust valves to 34 mm. Otherwise, these are the same aluminum single-shaft cylinder heads with three valves per cylinder, with a variable valve timing system and hydraulic compensators. Intake manifold for M112 E24 with adjustable length. Timing chain drive, chain service life is approximately 200 thousand km. Bosch Motronic ME 2.0 engine management system.
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 signature failure of this series of engines is the destruction of the crankshaft pulley.
- The remaining engine problems are somehow related to increased oil consumption.
- Due to contamination of the crankcase ventilation, grease creeps out from under the gaskets and seals.
- The main cause of oil burnout here is usually in hardened valve stem seals.
- Lubrication leak points are also the oil filter housing and heat exchanger.
