Mercedes-Benz M130 Engine
The Mercedes Benz M130 Engine was the last and largest of the ‘mid-sized’ Single Over Head Camshaft (SOHC) straight-6 cylinder (inline) engines produced by Mercedes Benz. The ‘mid-sized six’ started life as the 2.2 litre M180 (80mm bore × 72.8mm stroke = 2,196cc/134ci). It was the first "over-square" engine - with a cylinder bore greater than its stroke - that the manufacturer installed in a production car.
The unit was unveiled at the Frankfurt Motor show in April 1951 alongside the new 3.0 litre M186 ‘big’ straight-6. These engines were used to power the newly introduced 220 and 300 models of the Mercedes range. While sharing many design features such as staggered valve arrangement and rockers running off a single overhead camshaft driven by a duplex cam-chain, the engines were of completely different design with little or no inter-changeability of parts.1
Read more about Mercedes-Benz M130 Engine: The 'Big Six', M180 To M130, Mid-sized Six-cylinder Head Design
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“Industrial man—a sentient reciprocating engine having a fluctuating output, coupled to an iron wheel revolving with uniform velocity. And then we wonder why this should be the golden age of revolution and mental derangement.”
—Aldous Huxley (1894–1963)