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An evolution of the 1964 DOHC prototype “XJ13” engine, the Jaguar V12 engine is a family of SOHC internal combustion V12 engines with a common block design, that were mass-produced by Jaguar Cars for a quarter of a century, from 1971 to 1997, mostly as 5.3‑litres, but later also as 6‑litres, and 7‑litre versions that were deployed in racing.
The XJR-12 is famous for winning the 1990 24 Hours of Le Mans race. Weighing 900 kg and powered by a 7.0 L 60 degree SOHC V12 developing 730 horsepower / 545 kW @ 7000 rpm , and 579 ft lbf / 785 N·m @ 5500 rpm, the XJR-12 could hit 368 km/h / 229 mph. [ 1 ]
The XJ6 replaced most of Jaguar's saloons – which, in the 1960s, had expanded to four separate ranges. It carried over the 2.8-litre (2,792 cc (170.4 cu in)) and 4.2-litre (4,235 cc (258.4 cu in)) cylinder versions of Jaguar's renowned straight-six XK engine, and front and rear suspensions, from previous models: the widest version of Jaguar's IRS unit from the Mark X, and the subframe ...
The XJR-12 was short-lived, as in 1991, Jaguar decided to debut their new 3.5L naturally aspirated V8 engine by Cosworth for the XJR-14. After having won multiple championships in the WSC, and instability due to multiple rule changes, Jaguar decided to drop out following the 1991 season and concentrate on IMSA.
The Jaguar XJR-12 had been given aerodynamic changes by engineer Alastair McQueen and bigger brakes fitted. Given that they had won in 1990 with fuel left over, TWR's engine-specialist, Allan Scott enhanced the 24-valve V12, boring it out to 7.4-litres and increasing the torque.
The Jaguar XJ-S (later called XJS) is a luxury grand tourer manufactured and marketed by British car manufacturer Jaguar Cars from 1975 to 1996, in coupé, fixed-profile and full convertible bodystyles. There were three distinct iterations, with a final production total of 115,413 units over 20 years and seven months.
The Jaguar AJ-V8 is a compact DOHC V8 piston engine used in many Jaguar vehicles. It was the fourth new engine type in the history of the company. It was an in house design with work beginning before Ford's purchase of the company. In 1997 it replaced both designs previously available on Jaguar cars: the straight-6 Jaguar AJ6 engine (or rather ...
Tony Southgate, designer of Jaguar's Le Mans-winning XJR-12, was brought on board as project co-ordinator. The car was built around the completely new 3.5-litre RV10 engine . The all-aluminium block had a 72° V10 with two valves per cylinder and could develop 660 and was fitted to a 6-speed gearbox.