The Mercedes-Benz M137 engine is a naturally aspirated, SOHC 60° V12 engine, with three valves per cylinder, 2 intake and 1 exhaust. It was built to replace the larger and heavier, yet more powerful, DOHC, four valves per cylinder, naturally aspirated, 6.0 L M120 V12 unit. The M137 was used briefly between 1998 and 2002 for the W220 S-Class (long wheelbase only) and C215 CL-Class.[1] The architecture is similar to M112 and M113 engines, and is designed to match the overall dimensions of a V8 unit with undersquare internal measurements. The crankcase was cast in a lightweight alloy with "Silitec" (silicon/aluminium) cylinder liners to save weight. The M137 is 80 kg lighter than its predecessor and features cylinder deactivation technology. Both displacement variants have 10:1 compression ratio.[2]
| Mercedes-Benz M137 engine | |
|---|---|
 | |
| Overview | |
| Manufacturer | Mercedes-Benz |
| Production | 1997–2002 |
| Layout | |
| Configuration | 60° V12 |
| Displacement | 5.8 L; 353.1 cu in (5,786 cc) 6.3 L; 381.9 cu in (6,258 cc) |
| Cylinder bore | 84 mm (3.31 in) 84.5 mm (3.33 in) |
| Piston stroke | 87 mm (3.43 in) 93 mm (3.66 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | SOHC 3 valves x cyl. |
| Compression ratio | 10.0:1 |
| Combustion | |
| Fuel system | Fuel injection |
| Fuel type | Gasoline |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 270 kW (367 PS; 362 hp) 326 kW (443 PS; 437 hp) |
| Specific power | 46.6 kW (63.4 PS; 62.5 hp) per litre 51.7 kW (70.3 PS; 69.3 hp) per litre |
| Torque output | 530 N⋅m (391 lb⋅ft) 620 N⋅m (457 lb⋅ft) |
| Chronology | |
| Predecessor | Mercedes-Benz M120 |
| Successor | Mercedes-Benz M275 |
The M137 was replaced by the more powerful twin-turbocharged M275 engine.
E58
editMercedes introduced the M137.970 engine in its 5.8-litre form in S 600 and CL 600 models. The internal measurements of 84 by 87 mm (3.3 by 3.4 in) of bore and stroke translates to a total displacement of 5,786 cc (5.8 L; 353.1 cu in). The resulting power output is 270 kW (367 PS; 362 hp) at 5500 rpm and torque figures of 530 N⋅m (391 lb⋅ft) at 4250 rpm.[2] From 1997 up to 2002, Mercedes produced 11,693[3] examples of the M137.970-powered S 600 and further 6,348 units of the coupé version, CL 600.[4]
M137.970 applications:
- 1997–2002 S 600 (W220)
- 1998–2002 CL 600 (C215)
E63 AMG
editIn 2001 Mercedes and AMG introduced a series of special high-output models equipped with a larger-displacement M137.980 engine.[5][6] Cars were available through AMG dealers only and sold to selected European and Asian customers. The 2001 S 63 AMG was produced in only 70 units. The 2001 CL 63 AMG exists in only 26 examples and the rarest of all is the 2002 G 63 AMG with only 13 units produced.[7][8][9] The total displacement of 6,258 cc (6.3 L; 381.9 cu in) is thanks to internal measurements of 84.5 by 93 mm (3.3 by 3.7 in).[10] The resulting power output is 326 kW (443 PS; 437 hp) at 5500 rpm and torque figures of 620 N⋅m (457 lb⋅ft) at 4400 rpm.[11][2]
M137.980 applications:
- 2001–2002 S 63 AMG (V220)
- 2001–2002 CL 63 AMG (C215)
- 2002 G 63 AMG (W463)
See also
editReferences
edit- ^ "Mercedes-Benz M137 engine (1998-2002)". australiancar.reviews. Retrieved 8 January 2020.
- ^ a b c "Mercedes-Benz M137 V12 engine". motor-car.net. Retrieved 8 January 2020.
- ^ "S 600 long wheelbase / V 220 E 58, 2000- 2002". mercedes-benz-publicarchive.com. Retrieved 29 November 2023.
- ^ "CL 600 / C 215 E 58, 2000 - 2002". mercedes-benz-publicarchive.com. Retrieved 29 November 2023.
- ^ "CL 63 AMG / C 215 E 63, 2001 - 2002". mercedes-benz-publicarchive.com. Retrieved 28 November 2023.
- ^ "S 63 AMG long wheelbase / V 220 E 63, 2001 - 2002". mercedes-benz-publicarchive.com. Retrieved 28 November 2023.
- ^ "Silly Fast, Stupid Rare: The 2001 Mercedes-Benz CL63 AMG V12". oppositelock.kinja.com. Retrieved 8 January 2020.
- ^ "2003 Mercedes-Benz CL63 AMG". bonhams.com. Retrieved 8 January 2020.
- ^ "Mercedes-Benz G 63 AMG Automatic, 444hp, 2002". car.info. Retrieved 8 January 2020.
- ^ "MERCEDES BENZ S 63 AMG (W220) 2001". autoevolution.com. Retrieved 8 January 2020.
- ^ "Mercedes S63 AMG W220". fantasycars.com. Retrieved 8 January 2020.