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.
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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)|