Bentley Motors unveiled but a model of a race-car when in November 2000
the company announced their intention to return to racing at the Le Mans
24-hour race. This was a truly ambitious task because 7 decades had passed
since Bentley's last triumph on the Sarthe Circuit. The factory at Crewe
was equipped to produce side by side Bentley and Rolls-Royce motor cars -
but there was no trace of sufficient equipment to built an all-new
competition car.
The Crewe premises could add but a few relics to the new challenge: old
photos as documents that Bentley indeed some 70 years ago had been a tough
and successful competitor with five victories out of eight starts. However
for this new attempt after such a tremendously long pause conditions were
considerably better than many critics did assume. Well integrated into
VW's structure there was the clear advantage of having access to the full
knowledge gained within the whole company. There can be no mistake about
the most important fact: there really didn't exist a “time-lag” of 70
years dictating to start from zero. VW's subsidiary AUDI had been
overwhelmingly successful in competitive events during recent years and
their victory at Le Mans in 2000 had been well deserved. - Hence in-house
almost all data and experience was available to save time and costs when
Bentley started on their new development.
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It was but a logic consequence to use AUDI's V8-engine as power source
on board the new Bentley EXP Speed 8. This was a clever decision to gain
as much advantage as possible from existing resources, as the 90º-3,600cc
engine with four valves per cylinder and twin turbochargers did guarantee
an impressive potential. An Xtrac sequential 6-speed gearbox with Megaline
pneumatic system forwarded the engine's power output in excess of 600 bhp
to the rear wheels. Equipped with a magnitude of highly sophisticated
electronic control units and a brake systems with carbon-fibre discs the
power plant was set into a monocoque that combined unique carbon roll hoop
assemblies with a carbon-fibre body and chassis.
Bentley Motors had decided on a closed body as according to the rules
for the Le Mans 24-hour race that did permit increased air-restrictor
sizes compared to what was allowed for open race cars. The other side of
the coin however was that a slightly reduced tyre size had to be accepted ;
under certain circumstances perhaps a sort of disadvantage. After all it
needs to be taken into consideration that AUDI worked on two open race
cars to be entered at Le Mans in 2001 - and there wouldn't have been much
sense in an operation where one marque from VW clashed with another in
their ambitions.
C
Countless hours of windchannel- and racetrack-testing had been invested
- but in 2001 soon after both cars had started into the 24-hour race a
miniscule problem threatened to destroy any high spirited
expectations. Torrential rain was pouring down onto the racecourse and
after some time both cars suffered the same problem - water found its way
into the electronic control unit of the gear-change mechanism. One of the
team cars failed to proceed, the second lost considerable time at the box.
However its overall performance was such that it finished 3rd after 24
hours. The following year 2002 saw but one car at the start - that made it
to the 4th position overall. An extensively re-designed model of the
Bentley EXP8 was entered in the "Le Mans 24 Hours", when two cars started.
The team of Bentley Boys that had driven car no. 7
added the 6th victory of a Bentley motor car at Le Mans, albeit after some
time had passed since the last one.
Towards the end of 2000 there had been but a vision exemplified by a
toy-like model race car. Due to the combined efforts of designers and
drivers that vision had become reality: on the podium of the Le Mans
24-Hour Race in 2003 a team of Bentley Boys
celebrating their success.
Technical Data: Carbon-fibre monocoque, with rtn stressed carbon-fibre
body, Wheelbase 2,730 mm, overall length 4.630 mm, weight 900 kg; 90º-V8
engine, 3,600 cc capacity, 4 valves per cylinder, twin overhead camshafts
per cylinder bank, twin turbochargers, dry sump lubrication, Bosch 2.8
engine management, power output 600+ bhp; Xtrac 6-speed gearbox, Megaline
pneumatic actuation, AP Racing multi-plate clutch; Suspension with double
wishbones all round, torsion bar springs front, coil springs rear,
telescopic dampers; ventilated disc brakes all round, AP Racing six piston
callipers, top speed 215+ mph.