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From Wikipedia, the free encyclopedia

Jaguar XJR-9
Jaguar XJR-9 LM front-left Heritage Motor Centre, Gaydon.jpg
The 1988 24 hours of Le Mans winning XJR-9 on display at the British Motor Museum
Overview
Manufacturer
Production1988–1989
AssemblyUnited Kingdom: Kidlington, Oxfordshire
DesignerTony Southgate for TWR[1]
Body and chassis
ClassRacing car
Body style2-door Coupé
LayoutRear mid-engine, rear-wheel-drive
Related
Powertrain
Engine7.0 L 60 degree Jaguar V12
Transmission6-speed manual
Dimensions
Wheelbase2,780 mm (109.4 in)[1][2]
Length4,780 mm (188.2 in)
Width2,000 mm (78.7 in)
Height1,100 mm (43.3 in)
Kerb weight880 kg (1,940 lb)
Chronology
PredecessorJaguar XJR-8
Successor

The Jaguar XJR-9 is a sports-prototype race car built by Jaguar for both FIA Group C and IMSA Camel GTP racing, debuting at the 1988 24 Hours of Daytona.

Development

An evolution of the design for the XJR-8, the XJR-9 was designed by Tony Southgate, built by Tom Walkinshaw Racing (TWR) and featured a Jaguar 7.0-litre V12 engine based on the production 5.3-litre engine as used in the Jaguar XJS road car. A variant of the XJR-9, the XJR-9LM, would be developed specifically for the 24 Hours of Le Mans where the requirement for high straight line speeds on the Mulsanne Straight necessitated a low-drag aerodynamic package.

History

Rear three-quarter view of the 1988 Le Mans-winning XJR-9.
Rear three-quarter view of the 1988 Le Mans-winning XJR-9.

In the United States, the Castrol sponsored XJR-9s debuted at the 24 Hours of Daytona, with the car taking the overall win. However, throughout the rest of the IMSA Camel GTP season the XJR-9 was unable to gain another win until the final race of the season, meaning the team had to settle for third in the constructor's championship. In the 1988 World Sports Prototype Championship, the XJR-9, running Silk Cut sponsorship, met with more success. The XJR-9 was able to take six victories, including the 24 Hours of Le Mans, where rookie driver Paul Taylor made his debut aiding in the Le Mans triumph, over the eleven race series. Silk Cut Jaguar won the Teams Championship and Jaguar driver Martin Brundle won the Drivers title. Jaguar's success at Le Mans marked the first time since 1980 that Porsche had not won Le Mans, and the first Le Mans victory for Jaguar since 1957.

For 1989, the XJR-9 was again entered in both IMSA Camel GTP and the World Sports Prototype Championship. However, the XJR-9 was by now dated, and in IMSA was being repeatedly beaten by Nissan, leaving the XJR-9 with only a single win on the season. This led to Jaguar introducing the XJR-10 midway through the season, which met with slightly better success having two wins on the season and usually placing higher than the XJR-9 it ran with. At the end of the season, Jaguar finished 2nd in the championship.

A similar story occurred in the 1989 World Sports Prototype Championship, with Jaguar not winning a single race during the series. Midway through the championship the XJR-11 was developed to replace the XJR-9, although both finished out the season. This disappointment led to Jaguar finishing fourth in the Teams Championship.

Within months of Jaguar's 1988 Le Mans victory, TWR would use the XJR-9 chassis for the development of the R9R prototype which by 1990 had evolved into the XJR-15 sports car and spec-racer.

In 2010, the car won the Le Mans Legend race.

Specifications

Engine

  • Type: 60 degree SOHC 24 valve V12
  • Position: Mid, Longitudinally mounted
  • Displacement: 6,995 cc (427 cu in)
  • Bore: 94 mm (3.7 in)
  • Stroke: 84 mm (3.3 in)
  • Compression: 12:1
  • Injection: Zytek fuel injection
  • Aspiration: Naturally aspirated
  • Power: 750 hp (760 PS; 559 kW) at 7,200 rpm
  • Torque: 828 N⋅m (611 lb⋅ft) at 5,500 rpm

Drivetrain

  • Body: Carbon Composite body
  • Chassis: Carbon fibre and Kevlar monocoque
  • Front Suspension: Double wishbones, push-rod activated coil springs over dampers
  • Rear Suspension: Magnesium uprights, titanium coil springs over dampers
  • Steering: Rack and pinion power steering
  • Brakes: TWR ventilated discs
  • Transmission: March/TWR 5-speed manual transmission
  • Layout: Rear-wheel drive

Performance figures

  • Power to weight ratio: 0.85bhp/kg
  • Top speed: 245 mph (394 km/h)

Gallery

See also

Bibliography

  • Bamsey, Ian (1989). Jaguar XJR Group C and GTP Cars. G T Foulis. ISBN 0854297529.CS1 maint: ref=harv (link)
  • Thurston, Leslie F. (2003). TWR Jaguar Prototype Racers. Jaguar Daimler Heritage Trust. ISBN 978-0954103910.CS1 maint: ref=harv (link)
  • Cotton, Michael (2017). Jaguar XJR-9 Owners Workshop Manual. J.H. Haynes. ISBN 978-1785211133.CS1 maint: ref=harv (link)

References

  1. ^ a b Melissen, Wouter (7 November 2014). "1988 Jaguar XJR-9 LM - Images, Specifications and Information". Ultimatecarpage.com. Archived from the original on 3 April 2018. Retrieved 14 August 2019.
  2. ^ "Jaguar XJR-9LM". Supercars.net. 1 March 2016. Retrieved 14 August 2019.

External links

This page was last edited on 4 March 2020, at 11:27
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