Mercedes-Benz M100 engine
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|aka||Type aka here, not up there|
|Type||Note what type of fuel it consumes|
|Production/Introduction||produced/introduced from when to when|
|Displacement|| 6.3 litre|
|Aspiration||write its type of aspiration|
|Fuel System||write if it is injected or carburated and the system used|
|Output|| N/A hp @ N/A rpm|
N/A lb-ft. of torque @ N/A rpm
|Compression||write compression ratio here|
|In. Valves||in inches|
|Ex. Valves||in inches|
|Firing Order||Firing order of cylinders|
|Left Bank||Write which cylinders are in this bank (write N/A if it it is inline)|
|Right Bank||(same as above)|
|Dry Weight||lbs. / kg.|
|Fuel Consumption||city/highway (mpg & km/L)|
|Emission/s|| CO: g/km|
|Chief Engineer||write here|
The Mercedes-Benz M100 Engine was introduced in the 1963 Mercedes-Benz 600 with 6.3 litres, and later also used in the Mercedes-Benz 300SEL 6.3 from 1968 onwards, and even larger, in the 1970s Mercedes-Benz 450SEL 6.9.
Each hand-built unit was bench-tested for 265 minutes, 40 of which were under full load. A mechanical fuel injection system designed and built in-house by Daimler-Benz was used through 1972, with Bosch D-Jetronic electronic fuel injection being used instead starting in 1973. Several years later came a switch to K-Jetronic. As in all Mercedes-Benz automobile engines, the crankshaft, connecting rods and pistons were forged instead of cast.
In non-US trim, the 6.9 litre (6814 cm³ or 417 in³) power plant was conservatively rated at 286 horsepower (213 kW) with 405 ft·lbf (549 Nm) of torque helping to compensate for the 2.65 to 1 final drive ratio necessary for sustained high-speed cruising. The North American version, introduced in 1977, was significantly less powerful at 250 horsepower (186 kW) and 360 ft·lbf (488 N·m) of torque due to more stringent emissions control requirements.
In the interest of both engine longevity as well as creating some extra space under the hood, a "dry sump" engine lubrication system was used. Originally developed for use in race cars as a way to prevent foaming of the engine oil by the crankshaft which in turn would create a serious drop in oil pressure, the system circulated twelve litres of oil between the storage tank mounted inside the right front fender and the engine as opposed to the usual four or five litres found in V8s with a standard oil pan and oil pump. As a result, the engine itself had no dipstick for checking the oil level. Rather, the dipstick was attached to the inside of the tank's filler cap (accessible from the engine compartment) and the oil level was checked with the engine running and at operating temperature. The dry sump system also had the benefit of extending the oil change interval to 12,500 miles (20,000 km). This, along with hydraulic valve lifters which required no adjusting and special cylinder head gaskets which eliminated the need for periodic retorquing of the head bolts made the 6.9 nearly maintenance-free for its first 50,000 miles (80,500 km), requiring little basic service other than coolant, minor tune-ups, oil changes and replacement of the air, fuel, oil and power steering filters.
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