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CATEGORIES (articles) > Engine, Gearbox > Jaguar Engines > Jaguar V12 engine

Jaguar V12 engine


Jaguar's V12 was one of the premiere power plants 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 under square 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)

Jaguar V12 engine and gearbox. Early Carburettor version

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:

6 litre fuel injected Jaguar V12 in situ

1994-1995 Jaguar XJS
1994-1995 Jaguar XJSC
Jaguar XJ12 (XJ40)
1994-1996 Jaguar XJ12 (X300)




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