The OM661 engine is a collaboration between SsangYong Motors and Mercedes-Benz. It has 4 cylinders, a split combustion chamber and a working volume of 2.3 liters. Engines of the 661 series were equipped with such cars as SsangYong Musso (Tagaz Partner), SsangYong Korando (Tagaz Tager), as well as some Mercedes models.
This engine is similar to the OM662 engine, the only difference is that OM661 does not have an additional (fifth) cylinder and, accordingly, OM662 has a different fuel equipment. Motors SsangYong (OM661 Mercedes) have increased reliability, efficiency, and ease of maintenance.
Mercedes diesel R4 family: OM636, OM621, OM615, OM616, OM601, OM661, OM604, OM611, OM668, OM640, OM646, OM651, OM654.
Specifications
| Displacement, cc | 2152 – 2299 |
| Fuel system | prechamber injection |
| Power output, hp | 77 – 79 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 8v |
| Cylinder bore, mm | 89 |
| Piston stroke, mm | 92.4 |
| Compression ratio | 21.0 |
| Timing drive | chain |
| Turbocharging | no |
| Fuel type | diesel |
Modifications:
- OM 661.911 Engine (4-cylinder, 2299 cc), 2 valves per cylinder, 92.4 stroke, 89 bore, 58 kW (79 hp) For Mercedes-Benz Sprinter models 208 D 2.3, Sprinter 308 D 2.3, Sprinter 408 D 2.3, Vito 108 D 2.3, T1 – 208 D 2.3, T1 – 308 D 2.3, T2 / LN1 – 508 D, T1 / TN – 408 D, Korando 2.3. </ li>
- OM 661.940 engine (4 cylinders, 2299 cc), 2 valves per cylinder, 92.4 stroke, bore 89, 58 kW (79 hp)
- OM 661.960 engine (4 cylinders, 2152 cc), 2 valves per cylinder, 92 kW (125 hp)
Frequently asked questions about the Mercedes OM661
How much power does the Mercedes OM661 make?
The Mercedes OM661 develops 77 - 79 hp.
Does the Mercedes OM661 have a timing belt or chain?
The Mercedes OM661 uses a timing chain.
Is the Mercedes OM661 turbocharged?
No, the Mercedes OM661 is naturally aspirated.
