Toyota S engine

The Toyota S engine is a family of straight-four petrol engines, some of them also run on compressed natural gas, with displacements between 1.8 and 2.2 litres, produced by Toyota Motor Corporation from January 1980 to August 2007. The blocks are cast iron with aluminium cylinder heads, and the design was built around the new LASRE technology, the Lightweight Advanced Super Response Engine, which brought lighter parts such as sintered hollow camshafts. The first member, the 1.8 litre 1S, was first seen in 1981 and was fitted to a wide range of Toyotas in both rear-wheel-drive and front-wheel-drive applications, with a bore and stroke of 80.5 by 90.0 millimetres. The 2S is a 2.0 litre engine with an iron block and an alloy head and was the last of the S family without double overhead camshafts. The 1S powered cars such as the Celica, Carina, Corona, Mark II and the Camry and Vista. In the Transport Atlas it represents Toyota mid-size petrol engines from the early 1980s to the mid 2000s.