Mercedes M104 2.8L Engine Specs, Problems, Reliability. The M104 E28 2.8-liter engine is the smallest engine of the M104 series. It was designed on the basis of the 3.2-liter engine. This engine has its crankshaft and cylinder block. The stroke is 73.5 mm (2.3-liter version has 89.0 mm stroke).
The cylinder head is the same as the E32 engine has – 2 overhead camshafts, variable valve timing system on the consumption camshaft just. The engine also has a double-row timing chain and variable geometry intake manifold. As you can see, both engines are almost identical, and the primary difference is engine displacements.
The M104 2.8-liter engine was the next engine after the M103 E26. In 1998 it was moved out from the production by V6 M112 E28 engine.
M104 E28 28l Engine Problems and Reliability
All issues and problems of the 2.8 l engine are also the like for the M104 3.2 l engine. You can read about them below;
- Oil leakages from gaskets under the cylinder head cover and oil filter.
- Engine overheat. Check the condition of the radiator or the viscous fan coupling if engine started to get too hot.
The high-quality oil and gasoline, and routine upkeep will extend the life of the M104 engine. This engine is one of the most reliable Mercedes-Benz engines.
Mercedes M104 2.8L Engine Specs
|Manufacturer||Stuttgart-Bad Cannstatt Plant|
|Cylinder block material||Cast iron|
|Cylinder head material||Aluminum|
|Fuel system||Fuel Injection|
|Number of cylinders||6|
|Valves per cylinder||2|
|Type of internal combustion engine||Four-stroke, naturally aspirated|
|Compression Ratio||9.2 (10)|
|Torque, lb ft||188-192/4400-4500|
|Engine oil weight||0W-30, 0W-40, 5W-30, 5W-40, 5W-50, 10W-40, 10W-50, 15W-40, 15W-50|
|Engine oil capacity, liter||6.5|
|Oil change interval, mile||6,000|
|Applications||Mercedes-Benz 300 E W124 (M103.980), Mercedes-Benz 300 SE W126 (M103.981), Mercedes-Benz 300 SL R107 (M103.982), Mercedes-Benz 300 SL R129 (M103.984)|