The Mercedes M104 E30 engine was born in 1989 and was a cylinder block from the M103 E30 covered with a new 24-valve cylinder head. Fuel injection system – mechanical injection KE-Jetronic. The single-row timing chain from the previous M103 was replaced with a reliable double-row, with a significantly longer service life.
In the improved cylinder head, in addition to two camshafts, hydraulic valve clearance compensators and a variable valve timing system on the intake shaft are used, which significantly improved engine performance. The diameter of the intake valves is 35 mm, exhaust 31 mm.
|Power output, hp||220 – 230|
|Torque output, Nm||265 – 270|
|Cylinder block||cast iron R6|
|Block head||aluminum 24v|
|Cylinder bore, mm||88.5|
|Piston stroke, mm||80.2|
|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 300 SL-24 R129)
|Engine lifespan, km||~500 000|
Disadvantages of the M104 E30 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.