Jaguar V12 engine
Jaguar's V12 was one of the premiere powerplants of the 1970s and 1980s. It was a V12 piston engine, originally designed for a Le Mans car, the ill-fated Jaguar XJ13. The V12 was only Jaguar's second engine design in the history of the company. It had a SOHC 2-valve head with flat combustion chambers.
5.3 The original 5.3 L (5343 cc) version had an undersquare 90mm bore and 70mm stroke and produced 240kW and 420Nm. This version was used in the following cars: Jaguar E-Type 1975-1981 Jaguar XJS 1972-1981 Jaguar XJ12 (Series 1 and 2) Panther J72 Panther De Ville
5.3 HE A High-Efficiency 5.3 HE debuted in 1982. Although power was down somewhat, fuel economy was up by nearly 50%. The 5.3 HE was used in these cars: 1982 Jaguar XJ12 (Series 3) 1982-1992 Jaguar XJS
6.0 HE The engine was stroked to 78.5mm in 1989 for a displacement of 6.0 L (5994 cc) to bring back some of the power lost to emissions requirements. The 6.0 HE was used in the following cars: 1994-1995 Jaguar XJS 1994-1995 Jaguar XJSC Jaguar XJ12 (XJ40) 1994-1996 Jaguar XJ12 (X300)
See also Jaguar XK6 engine Jaguar AJ6 engine V12 Performance
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