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{{Use dmy dates|date=February 2018}}
{{Use British English|date=February 2018}}
{{Infobox automobile {{Infobox automobile
|image = Jaguar XJR-11 2.jpg |image = Jaguar XJR-11 2.jpg
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|transmission = ] 5-speed ] |transmission = ] 5-speed ]
|layout = ] |layout = ]
|designer = ] with ] for ] <ref name="History of the XJR-11">{{cite web|url=http://www.ultimatecarpage.com/car/776/Jaguar-XJR-11.html|title= History of the XJR-11|author=Wouter Melissen|date=2012-01-18|accessdate=2017-12-18}}</ref> |designer = ] for ]<ref name="History of the XJR-11">{{cite web|url=http://www.ultimatecarpage.com/car/776/Jaguar-XJR-11.html|title= History of the XJR-11|author=Wouter Melissen|date=2012-01-18|access-date=2017-12-18}}</ref>
|weight= {{cvt|900|kg|lb|0|abbr=on}} <ref name="History of the XJR-11"/> |weight= {{cvt|900|kg|lb|0|abbr=on}} <ref name="History of the XJR-11"/>
|body_style = 2-door ] |body_style = 2-door ]
|predecessor = ] |predecessor = ]
|successor = ]<br>] |successor = ]<br />]<br>]
|related = ] |related = ]
|sp = uk
}} }}
] ]
The '''Jaguar XJR-11''' was a sports-prototype ] introduced for the ] while its sister car, the XJR-10 was introduced to compete in ] series races. The '''Jaguar XJR-11''' was a sports-prototype ] introduced for the ], while its sister car the XJR-10 was introduced to compete in ] series races.


==Development== ==Development==
For the 1989 season, ] realised that the ] produced V12 Jaguar sports prototypes were lacking competitiveness, especially in short sprint events. The small, light weight forced induction engines used by competitors such as ] outperformed the big, naturally aspirated engines that Jaguar Sport had been using for a long time. For the 1989 season, ] realised that the ] produced V12 Jaguar sports prototypes were lacking competitiveness, especially in short sprint events. The small, light weight forced induction engines used by competitors such as ] outperformed the big, naturally aspirated engines that Jaguar Sport had been using since the start of the programme.


Jaguar started development of a new engine in order to stay competitve. The Rover's V64V 3.5 L ] originally designed for the ] rally car proved to be an ideal engine for the new car, with its weight of just {{cvt|143|kg|lb|0|abbr=on}} and consistent performance. Jaguar developed two variants of the engine, the 3.0 L variant was intended for competition in the IMSA series and the 3.5 L variant was intended for competition in World sports car championship. Both variants were fitted with two ] turbochargers and produced varied power outputs of {{cvt|650|hp|PS kW|0|abbr=on}} and {{cvt|750|hp|PS kW|0|abbr=on}} respectively depending on the level of boost. Jaguar started development of a new engine in order to stay competitive. The Rover V64V 3.5 L ] originally designed for the ] rally car proved to be an ideal engine for the new car, with its weight of just {{cvt|143|kg|lb|0|abbr=on}} and consistent performance. Jaguar developed two variants of the engine: the 3.0 L variant was intended for competition in the IMSA series and the 3.5 L variant was intended for competition in World sports car championship. Both variants were fitted with two ] turbochargers and produced varied power outputs of {{cvt|650|hp|PS kW|0|abbr=on}} and {{cvt|750|hp|PS kW|0|abbr=on}} respectively depending on the level of boost.


With the help of ], ] designed a new chassis for the car which was compact and the evolution of the ] monocoque of the previous ]/]. The chassis incorporated double wishbone suspension with push-rod actuated dampers front and rear with the rear suspension mounted overboard. This helped free up more space for the ground-effect tunnels in order to improvise handling. Two different bodies were designed for the car as it was to compete in two different championships. The more aerodynamically bodied car was dubbed the XJR-10 and the other one, the XJR-11. <ref>{{cite web|url=http://www.ultimatecarpage.com/car/776/Jaguar-XJR-11.html|title= Development of the XJR-11|author=Wouter Melissen|date=2012-01-18|accessdate=2017-12-18}}</ref> ] designed a new chassis for the car which was compact and the evolution of the ] monocoque of the previous ]/]. The chassis incorporated double wishbone suspension with push-rod actuated dampers front and rear, with the rear suspension mounted overboard. This helped free up more space for the ground-effect tunnels in order to improve performance. Two different bodies were designed for the car, as it was to compete in two different championships.<ref>{{cite web|url=http://www.ultimatecarpage.com/car/776/Jaguar-XJR-11.html|title= Development of the XJR-11|author=Wouter Melissen|date=2012-01-18|access-date=2017-12-18}}</ref>


==Racing History== ==Racing History==
The XJR-11 was entered into competition in July 1989 at Brands Hatch and as expected, faced strong competition from the ] powered Sauber-Mercedes 'Silver Arrow' cars (the ] and ]). The team of Lammers and Patrick Tambay managed to finish sixth in the debut race. The car faced reliably issues throughout the year and was able to secure a single victory in the 1990 season at Silverstone. The XJR-11 wasn't used at the ] event unlike the XJR-9 and a new car, the ] was developed to compete in that event. The car's career was short lived and it was no longer eligible to compete in events due to the new rules of the ] for the 1991 season. With only one victory in its short career, it was one of the most unsuccessful sports prototypes produced by TWR with the major reason for its failure being unreliability but its 3.5 litre engine would later find use in the ]. The XJR-11 was entered into competition in July 1989 at Brands Hatch and as expected faced strong competition from the ]-powered Sauber-Mercedes 'Silver Arrow' cars, (the ] and ]). The team of ] and ] managed to finish sixth in the car's debut race. The car faced reliabity issues throughout the year and was only able to secure a single victory in the 1990 season at Silverstone. The XJR-11 wasn't used at the ] event and a new car, the ], was developed to compete in that event. The car's career was short-lived and it was no longer eligible to compete in events due to the new rules implemented for the 1991 season. With only one victory in its short career, it was one of the most unsuccessful sports prototypes produced by TWR. The generally accepted major reason for its failure was unreliability but its 3.5 L engine would later find use in the ].


==Specifications== ==Specifications==
* '''Engine''' * '''Engine'''
** Configuration: ] 90 degree V64V ] ** Configuration: ] 90 degree JRV6 ]
** Position: Mid, Longitudinally mounted ** Position: Mid, Longitudinally mounted
** Construction: ] alloy block and heads ** Construction: ] alloy block and heads
Line 38: Line 41:
** Valvetrain: DOHC, 4-valves per cylinder ** Valvetrain: DOHC, 4-valves per cylinder
** Injection: ] fuel injection ** Injection: ] fuel injection
** Aspiration: Forced induction (] with two ] ]) ** Aspiration: Forced induction (] with two ] ]s)
** Power: {{cvt|750|hp|PS kW|0|abbr=on}} at 7,500 rpm ** Power: {{cvt|750|hp|PS kW|0|abbr=on}} at 7,500 rpm

* '''Drivetrain''' * '''Drivetrain'''
** Body: Carbon composite body ** Body: Carbon composite body
** Chassis: ] and ] monocoque ** Chassis: ] and ] monocoque
** Suspension: Double wishbones, push-rod actuated coil springs over dampers with anti-roll bar (front)<br>double wishbones, coil springs over dampers with anti-roll bar (rear) ** Suspension: Double wishbones, push-rod actuated coil springs over dampers with anti-roll bar (front)<br>double wishbones, coil springs over dampers with anti-roll bar (rear)
** Brakes: ] cross ventilated discs with 6-piston callipers front and rear ** Brakes: ] cross ventilated discs with 6-piston calipers front and rear
** Layout: Rear-wheel drive ** Layout: Rear-wheel drive

* '''Performance''' * '''Performance'''
** Power to weight ratio: 0.83 hp/kg ** Power to weight ratio: 0.83&nbsp;hp/kg
** Top speed: {{cvt|229|mi/h|km/h|0|abbr=on}} (quoted) ** Top speed: {{cvt|229|mi/h|km/h|0|abbr=on}} (quoted)

==See also==
* ]


==References== ==References==
{{ref list}} {{reflist}}


==External links== ==External links==
{{commons category|Jaguar XJR-11}} {{commons category|Jaguar XJR-11}}
{{Jaguar modern timeline}}


] ]
] ]


{{Motorsport-stub}}

Latest revision as of 16:57, 23 November 2024

Motor vehicle
Jaguar XJR-11
Overview
ManufacturerJaguar Cars
Production1989–1990
DesignerTony Southgate for TWR
Body and chassis
ClassRacing car
Body style2-door Coupé
LayoutRMR layout
RelatedJaguar XJR-10
Powertrain
Engine3.5 L 90 degree Rover V64V Twin-Turbocharged V6
TransmissionTWR 5-speed manual
Dimensions
Kerb weight900 kg (1,984 lb)
Chronology
PredecessorJaguar XJR-9
SuccessorJaguar XJR-12
Jaguar XJR-14
Jaguar XJR-16
Cockpit

The Jaguar XJR-11 was a sports-prototype racing car introduced for the 1989 World Sports Prototype Championship, while its sister car the XJR-10 was introduced to compete in IMSA series races.

Development

For the 1989 season, Tom Walkinshaw realised that the TWR produced V12 Jaguar sports prototypes were lacking competitiveness, especially in short sprint events. The small, light weight forced induction engines used by competitors such as Mercedes-Benz outperformed the big, naturally aspirated engines that Jaguar Sport had been using since the start of the programme.

Jaguar started development of a new engine in order to stay competitive. The Rover V64V 3.5 L V6 engine originally designed for the MG Metro 6R4 rally car proved to be an ideal engine for the new car, with its weight of just 143 kg (315 lb) and consistent performance. Jaguar developed two variants of the engine: the 3.0 L variant was intended for competition in the IMSA series and the 3.5 L variant was intended for competition in World sports car championship. Both variants were fitted with two Garett turbochargers and produced varied power outputs of 650 hp (659 PS; 485 kW) and 750 hp (760 PS; 559 kW) respectively depending on the level of boost.

Tony Southgate designed a new chassis for the car which was compact and the evolution of the carbon fibre monocoque of the previous XJR-8/XJR-9. The chassis incorporated double wishbone suspension with push-rod actuated dampers front and rear, with the rear suspension mounted overboard. This helped free up more space for the ground-effect tunnels in order to improve performance. Two different bodies were designed for the car, as it was to compete in two different championships.

Racing History

The XJR-11 was entered into competition in July 1989 at Brands Hatch and as expected faced strong competition from the V8-powered Sauber-Mercedes 'Silver Arrow' cars, (the C8 and C9). The team of Jan Lammers and Patrick Tambay managed to finish sixth in the car's debut race. The car faced reliabity issues throughout the year and was only able to secure a single victory in the 1990 season at Silverstone. The XJR-11 wasn't used at the 24 hours of Le Mans event and a new car, the XJR-12, was developed to compete in that event. The car's career was short-lived and it was no longer eligible to compete in events due to the new rules implemented for the 1991 season. With only one victory in its short career, it was one of the most unsuccessful sports prototypes produced by TWR. The generally accepted major reason for its failure was unreliability but its 3.5 L engine would later find use in the Jaguar XJ220.

Specifications

  • Engine
    • Configuration: Jaguar 90 degree JRV6 V6 engine
    • Position: Mid, Longitudinally mounted
    • Construction: Aluminium alloy block and heads
    • Displacement: 3.5 L (214 cu in) (3,498 cc)
    • Bore/Stroke: 94 mm (3.7 in)/84 mm (3.3 in)
    • Valvetrain: DOHC, 4-valves per cylinder
    • Injection: Bosch fuel injection
    • Aspiration: Forced induction (twin-turbo with two Garrett turbochargers)
    • Power: 750 hp (760 PS; 559 kW) at 7,500 rpm
  • Drivetrain
    • Body: Carbon composite body
    • Chassis: Carbon fibre and Kevlar monocoque
    • Suspension: Double wishbones, push-rod actuated coil springs over dampers with anti-roll bar (front)
      double wishbones, coil springs over dampers with anti-roll bar (rear)
    • Brakes: AP Racing cross ventilated discs with 6-piston calipers front and rear
    • Layout: Rear-wheel drive
  • Performance
    • Power to weight ratio: 0.83 hp/kg
    • Top speed: 229 mph (369 km/h) (quoted)

See also

References

  1. ^ Wouter Melissen (18 January 2012). "History of the XJR-11". Retrieved 18 December 2017.
  2. Wouter Melissen (18 January 2012). "Development of the XJR-11". Retrieved 18 December 2017.

External links

« previous — Jaguar road and race car timeline, 1980–2019 — next »
Type 1980s 1990s 2000s 2010s
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
Ownership BL Independent Ford (PAG) Tata Motors
Grand tourer XJ-S XJ-S HE XJS XK8 / XKR (X100) XK / XKR (X150) F-Type (X152)
Compact executive car X-Type (X400) XE (X760)
Executive car S-Type (X200-X202-X204-X206) XF / XFR (X250) XF (X260)
Full-size luxury car XJ6 Series III XJ6 (XJ40) XJ6 (X300) XJ8 (X308) XJ8 (X350) XJ8 (X358) XJ / XJR (X351)
XJ12 Series III XJ12 (XJ81) XJ12 (X305)
Subcompact luxury crossover SUV E-Pace (X540)
Compact luxury crossover SUV I-Pace
Mid-size luxury crossover SUV F-Pace (X761)
Sports car XJR-15 XJ220
Racing car XJRs: 8/9/11/12/14/15/17 C R1/2/3/4/5 XKR GT3/GT2 I-Type 1-5
Concept Car
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