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All Tests

 Four-cylinder 2

In part four-cylinder 2 we start with BMW, of all things. But didn't this manufacturer excel with the inline six-cylinder? Correct, but after all one does business under the name 'Bayerische Motorenwerke' and then four-cylinder should be part of it. One also does.

Oddly enough, even from the beginning, if we only refer to the four-wheelers. After all, their production began as a license for the Austin Seven, a four-cylinder that cast a spell over large parts of Europe from 1922 onwards. Those were bad times in Europe, but at least four cylinders were affordable.

The bottom-driven engine had 750 cm3 displacement, initially 7.7 kW (10.5 hp) and, one was amazed, a crankshaft only supported at the ends, by pressure lubrication and immersion or spray lubrication. There was no pump for cooling, only heat circulation. In the video below, the engine in action.

Here you can see the engine compartment of a Mini, which was also called Austin Seven, and whose later connection to BMW can still be traced today. And if that's not enough for you with this four-cylinder manufacturer, we come to the 'New Class' from 1962 - 1972 below.

All of them are four-cylinder, which of course were also used in the 02 series. The most powerful, with 125 kW (170 hp), was the 2002 Turbo, which appeared at the time of the oil price crisis. The mirror-inverted lettering that was initially still visible, one took particularly amiss.

And the used cylinder blocks of the first M10 (1500) became something special, namely the Formula 1 engine, which won the world championship in 1983 in a Brabham chassis with Nelson Piquet. In the qualification it is said to have had well over 1000 hp with 5 bar boost pressure, but with a very special fuel mixture, which was allowed at the time.

Finally, let us remind you of the E30 M3, which competed in 1986 against the Mercedes 190E 2.3- and 2.5-16, which was supported by Cosworth. With which we want to come to all the other manufacturers of four-cylinders. Did you know that the predecessor of the two-cylinder Fiat 500 was the Topolino and had an engine with four cylinders?

Italy has a huge tradition of in-line four-cylinder engines. Just think of the of Alfa with dual overhead camshafts and Weber carburetors. Where small two-stroke engines became more common is Japan, but that's because of their small cars on narrow roads.

With the many islands it was cheaper to transport around outside. But the two-stroke engine does not fit the four-cylinder at all. Two yes, three also, but then in most cases the development is over. However, with one exception, the diesel engine, e.g. in America. But of course they never stopped at four cylinders.

VW deserves a mention with its first approach in the field of diesel engines. VW deserves a mention with its first approach in the sector of diesel engines. From 1976 onwards, it literally mixed up the area of relatively sluggish engines in a light and lively manner. And yet in the end we come back to Mercedes, this marvel in the A45s with unmatched 310 kW (410 hp) and 500 Nm, it is even superior to many larger engines in terms of displacement.

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