#JaguarXK6Engine

The Jaguar XK was an inline six-cylinder, dual overhead camshaft (DOHC) engine produced by Jaguar from 1949 to 1992. Introduced in 3.4-litre form, it became one of the marque’s defining power units, combining robust construction, high specific performance and considerable development potential. Its aluminium cylinder head used hemispherical combustion chambers, with inclined valves operated by twin overhead camshafts, while the cast-iron cylinder block contributed to the engine’s durability. The XK powered a wide range of Jaguar road cars and competition models and was produced in several capacities, most notably 2.4, 3.4, 3.8 and 4.2 litres. In competition form it was progressively developed with specialised cylinder heads, multiple carburettor arrangements, revised camshaft profiles and, in some applications, dry-sump lubrication. It achieved major international success in models such as the C-Type and D-Type, helping Jaguar to establish a dominant presence in endurance racing during the 1950s. Its strength and adaptability also made the XK attractive to independent constructors and privateers, who used it in a variety of sports-racing cars and specials. De-tuned versions were additionally employed in certain military vehicles produced by manufacturers including Alvis and Daimler.

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