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| block = Aluminum | head = Aluminum | valvetrain = | fuelsystem = | fueltype = Gasoline | oilsystem = Wet sump | coolingsystem = Watercooled | power = | torque = | compression = | specpower = | successor = Ecotec engine (De facto) }} *''This article is about the engine series produced by the Saturn subsidiary of General Motors. For the engine series produced by Mitsubishi Motors, please see Mitsubishi Saturn engine''. The powerplant used in Saturn S-series automobiles was a straight-4 aluminum piston engine produced by Saturn, a subsidiary of General Motors. The engine was only used in the Saturn S-series line of vehicles (SL, SC, SW) from 1991 through 2002. It was available in chain-driven SOHC or DOHC variants. This was an innovative engine for the time using the lost foam casting process for the engine block and cylinder head. Saturn was one of the first to use this casting process in a full-scale high-production environment. Both engine types used the same engine block. ==Engine block== The engine utilized a water-cooled aluminum block. The main bearing caps were made of cast iron and held in place with two bolts each. The cylinder block bores had interference fit cast iron liners for the piston rings to sit against. The engine block was made from 319.1 aluminum alloy and the liners were made from D5506 ductile iron. 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「Saturn I4 engine」の詳細全文を読む スポンサード リンク
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