page_title: Jaguar Cars
section_title: Founding
hierarchical_section_title: Jaguar Cars / History / Founding
caption_attribution_description: English: Jaguar XK6 engine in a Jaguar E-Type. Captioned As {}
context_page_description: Jaguar is the luxury vehicle brand of Jaguar Land Rover, a British multinational car manufacturer with its headquarters in Whitley, Coventry, England. Jaguar Cars was the company that was responsible for the production of Jaguar cars until its operations were fully merged with those of Land Rover to form Jaguar Land Rover on 1 January 2013.
  Jaguar's business was founded as the Swallow Sidecar Company in 1922, originally making motorcycle sidecars before developing bodies for passenger cars. Under the ownership of S. S. Cars Limited the business extended to complete cars made in association with Standard Motor Co, many bearing Jaguar as a model name. The company's name was changed from S. S. Cars to Jaguar Cars in 1945. A merger with the British Motor Corporation followed in 1966, the resulting enlarged company now being renamed as British Motor Holdings, which in 1968 merged with Leyland Motor Corporation and became British Leyland, itself to be nationalised in 1975.
  Jaguar was spun off from British Leyland and was listed on the London Stock Exchange in 1984, becoming a constituent of the FTSE 100 Index until it was acquired by Ford in 1990.
context_section_description: The Swallow Sidecar Company was founded in 1922 by two motorcycle enthusiasts, William Lyons and William Walmsley. In 1934 Walmsley elected to sell-out and in order to buy the Swallow business (but not the company which was liquidated) Lyons formed S.S. Cars Limited, finding new capital by issuing shares to the public.
  Jaguar first appeared in September 1935 as a model name on an SS 2½-litre sports saloon. A matching open two seater sports model with a 3½-litre engine was named SS Jaguar 100.
  On 23 March 1945 the S. S. Cars shareholders in general meeting agreed to change the company's name to Jaguar Cars Limited. Said chairman William Lyons "Unlike S. S. the name Jaguar is distinctive and cannot be connected or confused with any similar foreign name."
  Though five years of pent-up demand ensured plenty of buyers production was hampered by shortage of materials, particularly steel, issued to manufacturers until the 1950s by a central planning authority under strict government control.  Jaguar sold Motor Panels, a pressed steel body manufacturing company bought in the late 1930s, to steel and components manufacturer Rubery Owen, and Jaguar bought from John Black's Standard Motor Company the plant where Standard built Jaguar's six-cylinder engines. From this time Jaguar was entirely dependent for their bodies on external suppliers, in particular then independent Pressed Steel and in 1966 that carried them into BMC, BMH and British Leyland.
  Jaguar made its name by producing a series of successful eye-catching sports cars, the Jaguar XK120 (1948–54), Jaguar XK140 (1954–57), Jaguar XK150 (1957–61), and Jaguar E-Type (1961–75), all embodying Lyons' mantra of "value for money". The sports cars were successful in international motorsport, a path followed in the 1950s to prove the engineering integrity of the company's products.
  Jaguar's sales slogan for years was "Grace, Space, Pace", a mantra epitomised by the record sales achieved by the MK VII, IX, Mks I and II saloons and later the XJ6. During the time this slogan was used, but the exact text varied.
  The core of Bill Lyons' success following WWII was the twin-cam straight six engine, conceived pre-war and realised while engineers at the Coventry plant were dividing their time between fire-watching and designing the new power plant.  It had a hemispherical cross-flow cylinder head with valves inclined from the vertical; originally at 30 degrees (inlet) and 45 degrees (exhaust) and later standardised to 45 degrees for both inlet and exhaust.
  As fuel octane ratings were relatively low from 1948 onwards, three piston configuration were offered: domed (high octane), flat (medium octane), and dished (low octane).
  The main designer, William "Bill" Heynes, assisted by Walter "Wally" Hassan, was determined to develop the Twin OHC unit. Bill Lyons agreed over misgivings from Hassan. It was risky to take what had previously been considered a racing or low-volume and cantankerous engine needing constant fettling and apply it to reasonable volume production saloon cars.
  The subsequent engine (in various versions) was the mainstay powerplant of Jaguar, used in the XK 120, Mk VII Saloon, Mk I and II Saloons and XK 140 and 150. It was also employed in the E Type, itself a development from the race winning and Le Mans conquering C and D Type Sports Racing cars refined as the short-lived XKSS, a road-legal D-Type.
  Few engine types have demonstrated such ubiquity and longevity: Jaguar used the Twin OHC XK Engine, as it came to be known, in the Jaguar XJ6 saloon from 1969 through 1992, and employed in a J60 variant as the power plant in such diverse vehicles as the British Army's Combat Vehicle Reconnaissance (Tracked) family of vehicles, as well as the Fox armoured reconnaissance vehicle, the Ferret Scout Car, and the Stonefield four-wheel-drive all-terrain lorry. Properly maintained, the standard production XK Engine would achieve 200,000 miles of useful life.
  Two of the proudest moments in Jaguar's long history in motor sport involved winning the Le Mans 24 hours race, firstly in 1951 and aga
caption: XK engine in an E-Type
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