The expected Mercedes-Benz M100, the first V8 is still “bigger”

The expected Mercedes-Benz M100, the first V8 is still “bigger”


It was 1963 when Casa della Stella launched 600, a luxury and extreme limousine also known by the nickname of Grosser Mercedes (“Great Mercedes”), inherited from the 770s of the 1930s.

It actually had little to do with these, apart from the role of the top flag and the presence of an 8-cylinder engine, which however was no longer “in line”: it was V8.

This engine – codenamed M100 – was the heart of the entire car project, which was actually signed W100.

Construction mix

In anticipation of weight and set dimensions of 600, 5.5 to 6.2 meters long depending on version and equipment and complex hydraulic system in order to activate all service systems (including window lifts), the technical department of Casa della Stella had immediately decided to design an engine that could develop over 200 HP, with very generous torque. Thus the architectural choice was directed towards the V8 with a 90 ° angle between the two banks.

This engine was characterized by a hollow metal monobloc in which the lees were reinforced aluminum alloy heads. Distribution was delivered to the upper camshaft for each bank with 2 valves per cylinder, while the fuel system, developed by Bosch, was mechanical injection.

First edition

The Mercedes-Benz M100 engine launched by 600 in 1963 (and remained in production until 1981) had a 103 mm blade and a 95 mm stroke, for total transfer of 6,332 cc. With a compression ratio of 9: 1, it was capable of delivering a maximum power of 250hp at 4,000rpm and a maximum torque of 500Nm at 2,800rpm.

Mercedes 600 Coach “Maybach”

This engine, whose complete outline was the M100E63, was accompanied by a super-sedan throughout its operation, which ended after 18 years and slightly longer. Figures 2,700 produced between Limousine, Coaches and Landaulet. During this period, however, he also installed a second model, a higher version of the Mercedes W109. And that is what is considered, even if unofficial, the first S-Class.

The relevant model was developed 300 SEL 6.3, replacing the 175-hp in-line 6-cylinder SEL 300 fuel injection on a long wheel with a 600 V8, leaving it unchanged (performance included). More than 6,500 were released. In the early 1970s, one of these engines was competitively manufactured by AMG, which set it to 6.8 liters and 420 hp.

M100, the first naturally coveted V8 from Mercedes-Benz

The second version of the M100 instead started in 1975 on the Mercedes-Benz W116, the first true S-Class, in a special signed version. 450 SEL 6.9. It came from the 450 SEL, which typically had a 4.5-liter V8, but if it belongs to the more recent family M116 / M117, it was introduced in ’69 and then grafted on the SL R107 highway as well.

That of the 450 SEL 6.9 instead was the M100 raised to 6,834 cc, due to the hole increase from 103 to 107 mm, with the mark M100E69. In this case The ratio of compression was 8.8: 1 while high power and torque were measured respectively 286 hp at 4,250 rpm and 550 Nm at 3,000 rpm. A little less than 7,400 units of this car were built between ’75 and ’80, and the engine remains the Mercedes’ series built with the most advanced transmission to date.

Transfer Power Couples Production Examples
6,332 of the Italian Civil Code 250 hp 500 Nm 1963-1981 Mercedes-Benz 600 (W100), 300 SEL 6.3 (W109)
6,834 of the Italian Civil Code 286 CV 550 Nm 1975-1981 Mercedes-Benz 450 SEL 6.9 (W116)



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