Mitsubishi KE engine
The Mitsubishi KE engine is a range of engines produced by Mitsubishi Motors during the 1960s and early 1970s. They were extensively used in the various Colt-branded vehicles the company produced from 1963. The engines were overhead valve iron-blocks, for gasoline and diesel use. The first digit after the "KE" denotes the number of cylinders, straight-4s becoming KE4 and six-cylinder versions such as the single overhead camshaft 2.0 L straight-6 which was developed in 1964 for the new Mitsubishi Debonair flagship sedan, receiving the KE6 prefix. The last digit is simply a serial, denoting  which number engine it is. Some of these engines, such as the two-liter KE42, were further developed into overhead-cam engines and were named Astron. As a large scale manufacturer, Mitsubishi had a wealth of experience building engines, both gasoline and diesel, in V and straight engine block configurations during the war. One of their many examples was the air-cooled A6120VDe air-cooled inline 6-cylinder 14.4 L diesel and the SA12200VD air-cooled V-12 diesel (21.7 litres). Specifications. KE42. In 1973, the KE42 was upgraded to meet new emissions regulations and received the MCA (Mitsubishi Clean Air ) name to reflect this. Power also increased by . This engine was developed into an overhead-cam unit, called the Astron 4G52. KE47. The KE47 was largely replaced by the 2.4 liter Astron 4G53 in 1975.