Ford I4 DOHC engine
The Ford I4 DOHC engine is a cast iron block 4-cylinder inline internal combustion engine with twin overhead camshafts, produced by the Ford Motor Company at Dagenham Engine Plant. It was initially available as a 2.0 litre 8-valve version, and later in 2.0 and 2.3 litre 16-valve versions from 1989 to the end of production of the MK2 Ford Galaxy in 2006. It powered various Ford models during this time, but was most well known in the rear-wheel drive "Twin Cam" variants of the Ford Sierra and Ford Scorpio. Despite being built for the company's larger RWD models, Ford also employed the engine in the front-wheel drive Galaxy and the Escort RS 2000 16v. History The engine was originally designed to replace the 2.0 L OHC Pinto engine, derivatives of which had powered most of Ford's four-cylinder rear-wheel drive cars since the early 1970s, and which was by that time lagging behind the competition in terms of power output, efficiency and refinement. Equipped with a newly designed cast aluminium alloy twin-cam cylinder head but still only 8 valves, and a "square" bore and stroke, the new I4 was launched in the Ford Sierra and Scorpio, mated to either the also