Land Rover 2.0-litre petrol engine

The Land Rover 2.0-litre petrol was the second engine fitted to the Land Rover, a four-cylinder inlet-over-exhaust unit of 1,997 cc with a bore and stroke of 77.8 by 105 mm, made by boring out the 1.6-litre engine. It was fitted to the Series I from 1952, and the Land Rover FAQ gives its original form a compression ratio of 6.8 to 1 and a net output of 52 bhp at 4,000 rpm, in use from September 1952 to 1954, with a full-flow version introduced in 1954. Wikipedia notes that its Siamese bores leave no water passages for cooling between the cylinders, and the FAQ adds that the very narrow spacing between cylinder pairs became a problem later in the engine's life, which staggered bores corrected in 1956. A modified version with an SU carburettor powered the Rover 60 car announced in 1953, and early Series II 88-inch Land Rovers were fitted with the old engine to use up stock before the 2.25-litre petrol took over.