Mercedes-Benz Engine
M09
The Mercedes-Benz M09 is a I6 gasoline piston engine.
- Years
- 1928–1929
- Configuration
- I6
- Fuel
- Gasoline
- Top power
- 61 PS
Bored out one final time for a car Stuttgart had already given up on.
The Typ 350 of 1928 was the third and last revision of Porsche’s big saloon. The six went from 76 to 80 mm on the bore for 3,444 cc, output rose to 60 PS at 3,200 rpm, and taller gearing — 5.0 for flat country in place of 5.4 — brought the top speed to about 103 km/h. Side valves, one camshaft in the block, a single Zenith carburetor: the architecture Porsche had specified for the Berlin show two years earlier, stretched as far as it would go.
Nobody at Daimler-Benz expected the sales to improve, and they did not. The board had already given Hans Nibel the job of redrawing the car while the Typ 350 was still being built, and Porsche left the company. Nibel’s version appeared in 1929 as the Mannheim 350 — 230 mm less wheelbase, less weight, the same six re-rated to 70 PS. The M09 lasted barely a year, the shortest-lived member of a family that had been revised to death.
Versions.
Every factory version of the M09.
| Version | Displacement | Bore × Stroke | Compression | Power | Torque |
|---|---|---|---|---|---|
| 09 | 3,444 cc | — | — | 45 kW (60 hp; 61 PS) at 3,200 rpm | — |