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Nissan R391
Race Car
Category Le Mans prototype
Constructor Nissan
Chassis {{{Chassis}}}
Suspension (front) {{{Front Suspension}}}
Suspension (rear) {{{Rear Suspension}}}
Engine 5.0L VRH50A V8
Power {{{Power}}}
Transmission {{{Transmission}}}
Fuel {{{Fuel}}}
Tyres {{{Tyres}}}
Notable entrants {{{Notable Entrants}}}
Notable drivers {{{Notable Drivers}}}
Debut 1999
Races competed {{{Races Competed}}}
Race victories {{{Race Victories}}}
Constructors' Championships {{{Constructor's Championships}}}
Drivers' Championships {{{Driver's Championships}}}
Pole positions {{{Pole Positions}}}
Fastest laps {{{Fastest Laps}}}
Designer {{{Designer}}}

The Nissan R391 is a prototype racing car built by Nissan and their motorsports counterpart Nismo for competition at the 1999 24 Hours of Le Mans. It was a replacement for the R390 GT1, which was no longer legal in its production-based class.

History Edit

Following Nissan's return to sports car racing in 1995, motorosports division Nismo had been slowly climbing its way up the competition ladder to finally reach the top Le Mans prototype class. Starting with Skyline GT-R LMs in 1995, Nismo turned to developing the advanced R390 GT1 in 1997, which was effectively as close to a prototype as possible while still remaining street legal.

With major rule changes in the GT in 1999, major manufacturers were no longer able to build homologation specials which resembled prototypes more than true GT cars. Thus Mercedes-Benz, ToyotaPanozBMW, and Audi turned to the prototypes class, either using open cockpit prototypes or closed cockpit cars which were actually evolutions of their former GT cars. Nissan, believing that a purpose built prototype would be superior to an evolved GT car, decided to go the route of an open cockpit.

Nissan turned to the UK based firm G-Force Technologies to design and build the R391. Nigel Stroud would head up the car's design alongside Doug Skinner as the chief designer and Glenn Elgood as the race team fabricator. Nissan also formed a partnership with a longtime customer of its second hand sportscars, Courage Compétition. As part of a deal between the two, Nissan would give VRH35L 3.5L turbocharged V8 motors (left over from the R390 GT1) to Courage for use on their own prototype, while Nissan would in return gain expertise from Courage for use on the R391. Nissan would also buy a Courage C52 chassis to run under their own team in order to have reliability in case the R391s suffered from mechanical gremlins, with the 1999 24 Hours of Le Mans being their first race with the C52.

For the R391, Nissan would decide to use a new version of the VH engine, opting to no longer use turbocharging as they had on the VRH35L. Instead, a modified naturally aspirated version would be constructed, named the VRH50A. At a larger 5.0 liters, the engine was able to overcome the loss of its turbocharging while still maintaining the benefits of the original VRH35Ldesign.

Race results Edit

At the 1999 24 Hours of Le Mans, Nissan planned to enter two R391s along with a third Courage C52 with the older VRH35L motor. In official testing for Le Mans in May, the R391s were able to set the 10th and 13th fastest times, beating out some entries from Mercedes-Benz, Audi, and BMW, although they were not able to beat Panoz or their main rival, Toyota.

Come the actual race, Nissan was again quick, with one entry able to qualify 12th. Unfortunately, the other R391, while being driven by Eric van de Poele, crashed during the first qualifying session, damaging the car beyond repair. Van de Poele also suffered a broken vertebra in the accident, but would be able to recover. Thus Nissan would be forced to race with only a single R391.

During the race, the remaining R391 was able to climb its way up the field, running as high as 4th overall before an electrical problem in the engine caused the car to be retired after it had completed only 110 laps. Nissan's remaining entrant, their Courage chassis with the older Nissan turbo V8, was able to survive the race and finish a respectable 8th overall. However even this would be bested as Courage Compétition's entry, also using the older Nissan turbo V8, was able to finish 6th overall, eight laps ahead of Nissan's factory effort.

Later in 1999 the R391 would race again, this time at the invitational Fuji 1000km event which was backed by the Le Mansruling body, the Automobile Club de l'Ouest (ACO). The winners of this race would be able to earn automatic entries to the following year's 24 Hours of Le Mans. Although the event was mostly made up of Japanese teams and thus lacked most major manufacturer teams, Nissan did still have competition from Toyota, who brought out their Toyota GT-One which had beaten the R391 at Le Mans. Both teams entered a single car, but Nissan was able to come out on top, with the R391 defeating the GT-One by a single lap, earning Nissan bragging rights in sportscar racing in Japan.

Demise Edit

Although Nissan was able to gain automatic entry to the 2000 24 Hours of Le Mans with their win at Fuji, Nissan officials decided that the motorsports program was no longer worth the cost, especially with Nissan attempting to restructure itself under new leader Carlos Ghosn. With only a single victory for their sportscar program since 1995, it was decided that Nissan would immediately end the R391 project in early 2000, leaving Nissan's only motorsports program to be in JGTC. Nissan would therefore turn down its automatic entry to the 24 Hours of Le Mans.

Nissan would not attempt to return to sportscar racing until 2005, when it experimented with the possibility of returning by supplying British sportscar team Rollcentre Racing with a modified turbocharged V6 for the 2005 Le Mans Endurance Series season as well as that year's 24 Hours of Le Mans. However, the engine was not considered a success, and Nissan quickly ended the program again. They returned again in 2011, sponsoring and supplying engines for the LMP2 Oreca 03 of Signature Plus racing, which was re-branded as Signatech for the 2011 ILMC season. Through its first season, the car has not been a threat for overall wins, but it has scored multiple class wins and won the LMP2 championship.

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Smallwikipedialogo.png This page uses some content from Wikipedia. The original article was at Nissan R391. The list of authors can be seen in the page history. As with Autopedia, the text of Wikipedia is available under the GNU Free Documentation License.

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