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Mazda 787B information


Mazda 787
Mazda 787B
A Mazda 787B in Odaiba in 2007
CategoryGroup C/IMSA GTP
ConstructorMazda
Advanced Composite Technology
Designer(s)Nigel Stroud
SuccessorMazda MXR-01
Technical specifications
ChassisKevlar and carbon composite monocoque
Suspension (front)Double wishbone pullrod operated inboard Bilstein spring dampers.
Suspension (rear)Double wishbone top rocker-operated inboard spring dampers.
Axle track
  • 787: 1,450–1,530 mm (57–60 in)
  • 787B: 1,504–1,534 mm (59–60 in)
Wheelbase
  • 787: 2,640 mm (104 in)
  • 787B: 2,662 mm (105 in)
EngineMazda R26B 2,616 cc (159.6 cu in)[1] 4-rotor naturally aspirated mid-engined, longitudinally mounted
TransmissionMazda/Porsche 5-speed manual
Weight830 kg (1,830 lb)
FuelIdemitsu
TyresDunlop 300-640x18/355-710x18 (275-620x17/330-700x17)
Competition history
Notable entrantsJapan Mazdaspeed
Notable drivers
  • Belgium Pierre Dieudonné
  • Belgium Bertrand Gachot
  • United Kingdom Johnny Herbert
  • Sweden Stefan Johansson
  • Japan Yoshimi Katayama
  • Republic of Ireland David Kennedy
  • Japan Tetsuya Ota
  • Brazil Maurizio Sandro Sala
  • Japan Yojiro Terada
  • Germany Volker Weidler
  • Japan Takashi Yorino
Debut1990 1000 km of Fuji (787)
1991 430km of Suzuka (787B)
First win1991 24 Hours of Le Mans
Last win1991 24 Hours of Le Mans
Last event1991 430 km of Autopolis
RacesWinsPolesF/Laps
21100
Constructors' Championships0
Drivers' Championships0

The Mazda 787 and its derivative 787B are Group C sports prototype racing cars that were developed by Japanese automobile manufacturer Mazda for use in the World Sportscar Championship, All Japan Sports Prototype Championship, and the 24 Hours of Le Mans from 1990 to 1991. Designed to combine a mixture of the Fédération Internationale du Sport Automobile (FISA) Group C regulations with the International Motor Sports Association (IMSA) GTP regulations, the 787s were the last Wankel rotary-powered racing cars to compete in the World and Japanese championships, using Mazda's R26B engine.

Although the 787 and 787B lacked the single lap pace of World Championship competitors such as Mercedes-Benz, Jaguar, and Porsche, as well as Japanese Championship competitors Nissan and Toyota, the 787s had reliability that allowed them to contend for their respective championships. The reliability of the cars eventually paid off in 1991 when a 787B driven by Johnny Herbert, Volker Weidler, and Bertrand Gachot went on to victory in the 1991 24 Hours of Le Mans. As of 2023, this remains the only victory by a car not using a reciprocating engine design. It was the first victory by a Japanese manufacturer, and the only such victory until Toyota won the 2018 24 Hours of Le Mans.

A total of two 787s were built in 1990, while three newer specification 787Bs were built in 1991.[2]

  1. ^ Shimizu, Ritsuharu; Tadokoro, Tomoo; Nakanishi, Toru; Funamoto, Junichi, "Mazda 4-Rotor Rotary Engine for the Le Mans 24-Hour Endurance Race" (PDF), SAE Technical Paper Series 920309, Warrendale, PA: SAE International, p. 3
  2. ^ "Mazda Chassis Numbers". World Sports Prototype Racing. Archived from the original on September 27, 2007. Retrieved 2008-03-29.

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