Mercedes-Benz M104 engine
The M 104 is the last in-line six -cylinder petrol engine from Mercedes -Benz. It was introduced in 1989 as a redesigned successor to the M 103. In 1997, he was replaced by the M 112.
The M 104 is a further development of the M 103 and differs from the latter mainly due to a new cylinder head with four valves per cylinder and two chain-driven overhead camshafts and tappets with hydraulic valve lash adjustment ( hydraulic tappets ). It has a two-stage phase adjustment of the intake camshaft.
It gave him first with a displacement of 2960 cc in the model 300 E -24. Later this variation fell away, and there was the engine off in 1992 with 2.8 and 3.2 L. The 3 -liter version made 162 to 170 kW, depending on vehicle model and version. The later versions were slightly reduced in output per liter to get a better torque curve. With 2.8 liter engine made 142 or 145 kW, and 3.2 l 162 or 170 kW.
M 104 was used in the passenger car model series 124 and 210 ( E-Class ), 140 ( S-Class ), R 129 ( SL-Class ) and 202 ( C-Class).
In the picture you can see the AMG version with a 3.6 liter displacement and 206 kW (280 hp), which existed in the W 124 (E 36 AMG ) and W 202 ( C 36 AMG). The engine is based on the M 104 and has been thoroughly revised crafted by AMG. First, with a stroke of 92.4 mm and a 91 mm bore an ideal foundation for powerful torque, which is available over the entire engine speed range, created. The light and stable aluminum - forged pistons are cooled by additional oil jets. In addition, the crankshaft was finely balanced and the rods and pistons chosen for each other. Decisive changes affected also the cylinder head: The camshaft has been modified, edited, the air channels streamlined and there were sodium- cooled valves installed. A modified engine control rounds off the package.
With an air systems can be classified many M 104 EUR 2.
Until recently SsangYong built the M 104 engines even with license in their SUV a.