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|bore = |stroke = }} The BMW M20 was a straight-six SOHC piston engine produced from 1977-1993. Like the larger capacity M30 engine it was produced alongside, the M20 has 12 valves (two per cylinder). While the M30 camshaft is chain driven, the M20 camshaft and auxiliary shaft are driven by a timing belt. Initially released with a carburetor, later models used Bosch fuel injection. ==History== With displacements ranging from 1991 cc to 2693 cc, it was the "little brother" to the larger BMW M30. It has bore-spacing〔http://www.usautoparts.net/bmw/engines/m50.htm〕 instead of the of the M30 six-cylinder and the M10 four-cylinder engines. Powering the E21 and E30 3-Series, as well as E12, E28 and E34 5 Series cars, it was produced for nearly two decades, with the last examples powering the E30 ''325i touring'' built until April 1993.〔http://www.autoevolution.com/cars/bmw-3-series-touring-e30-1986.html〕 It was replaced by the DOHC BMW M50 engine. Early versions of the M20 were sometimes referred to as the "M60",〔http://www.bmwccbc.org/resources/index.html〕 although the M60 code has since been used for a V8 engine first produced in 1992. The M20 was the basis for the M21 diesel engine and the M70 V12 engine.〔http://www.usautoparts.net/bmw/engines/m21.htm〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「BMW M20」の詳細全文を読む スポンサード リンク
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