The Jaguar R4

By Steve
March 21 2003

The R4 is the first car to benefit from Cosworths wider 90 degree angle V10 engine and inherent lower centre of gravity. The car is expected to display major improvements over the R3 R4 TECHNICAL SPECIFICATION

Chassis: R4 composite monocoque structure, designed and built in-house, carrying the Cosworth Racing CR-5 V10 engine as a fully stressed member, Jaguar steering and power assistance.

Engine: Cosworth Racing CR-5 V10

Capacity: 2998 cc

Cylinders: 90-degree vee 10

Fuel: Castrol Racing Fuel

Transmission: Jaguar seven-speed gearbox, longitudinally mounted high-pressure hydraulic system for power shift and clutch operation. AP Racing triple-plate pull-type clutch. Independent oil system using Castrol Fluid Technology.

Suspension:

Front: Cast titanium uprights. Upper and lower carbon wishbones and pushrods. Torsion bar springing and anti-roll bar. Jaguar/Penske damper layout. Rear: Cast titanium uprights. Upper and lower carbon links and pushrods. Coil springs and torsion anti-roll bar. Jaguar/Penske damper layout.

Brakes:

Front: AP Racing lithium alloy six-piston callipers. Carbon Industrie or Brembo carbon/carbon discs and pads. Rear: AP Racing lithium alloy six-piston callipers. Carbon Industrie or Brembo carbon/carbon discs and pads.

Wheels: OZ Racing Front: 12.7 in x 13 in Rear: 13.4 in x 13 in

Tyres: Michelin

Electronics: Pi 'VCS' System. Integrated engine/chassis electronic control system, DASM and DATA logger.

COSWORTH RACING CR-5 V10 ENGINE TECHNICAL SPECIFICATION

Number of cylinders: 10

Vee Angle: 90

Number of valves: 40

Capacity: 2998 cc

Power output: Not disclosed

Maximum engine speed: Not disclosed

Construction: Aluminium block and heads cast in Cosworth Racing’s own foundry. Aluminium alloy pistons. Steel crankshaft.

Engine Management: Pi