The last largest civilian in-line six-cylinder Mercedes M104 E32 engine (excluding the sports M104 E34 AMG and M104 E36 AMG) appeared in 1991 and was developed on the basis of the three-liter M104 E30.
The main difference between the M104 E30 and the M104 E32 is the cylinder block, in which a crankshaft with a piston stroke increased to 84 mm was placed, and the cylinder diameter was increased to 89.9 mm. Cylinder head from M104 E30, with 4 valves per cylinder. Fuel injection system – distributed injection. Starting in 1992, an intake manifold with variable geometry began to be installed on the M104 E32.
Instead of a single-row unreliable timing chain on the 103rd engine, the new M104 uses a double-row one, with a much longer service life.
|Power output, hp||220 – 230|
|Torque output, Nm||310 – 315|
|Cylinder block||cast iron R6|
|Block head||aluminum 24v|
|Cylinder bore, mm||89.9|
|Piston stroke, mm||84|
|Compression ratio||9.2 – 10.0|
|Phase regulator||at the intake|
|Recommended engine oil||5W-40|
|Engine oil capacity, liter||7.0|
|Euro standards||EURO 1/2|
|Fuel consumption, L/100 km (for Mercedes E320 1994)
|Engine lifespan, km||~500 000|
Disadvantages of the M104 E32 engine
- The main problem of power units of this series is numerous oil leaks.
- First of all, gaskets leak: U-shaped, cylinder head and oil filter heat exchanger.
- The viscous coupling of the fan often fails, which is very dangerous for the engine.
- This motor is very afraid of overheating, the cylinder head is bent almost immediately.
- You will get a lot of trouble under the hood wiring, as well as ignition coils.