Category | Group C1 | ||||||||
---|---|---|---|---|---|---|---|---|---|
Constructor | Welter-Meunier | ||||||||
Designer(s) | Gérard Welter Michel Meunier | ||||||||
Predecessor | WM P87 | ||||||||
Successor | WM P489 | ||||||||
Technical specifications | |||||||||
Chassis | Aluminum | ||||||||
Suspension (front) | Double wishbone | ||||||||
Suspension (rear) | Same as front | ||||||||
Engine | Peugeot ZNS5 3.0 L (2,974 cc) V6 twin turbocharged Mid-engined, longitudinally mounted | ||||||||
Transmission | Hewland ZG400 5-speed manual | ||||||||
Power | 910 hp | ||||||||
Weight | 900 kg (1,984 lb) | ||||||||
Fuel | Essence | ||||||||
Tyres | Michelin | ||||||||
Competition history | |||||||||
Notable entrants | WM Secateva | ||||||||
Notable drivers | |||||||||
Debut | 1988 24 Hours of Le Mans | ||||||||
| |||||||||
Constructors' Championships | 0 | ||||||||
Drivers' Championships | 0 |
The Welter-Meunier P88 is a Group C sports prototype race car, designed, developed, and built by the French racing team Welter Racing, specifically to compete in the 24 Hours of Le Mans that year. It was designed and constructed according to the FIA's technical and sporting regulations for sports car racing. [1]
The car is notable for breaking the top speed record at the legendary Le Mans Circuit de la Sarthe, topping out and hitting a maximum speed of 405 km/h (252 mph), the fastest speed in the Le Mans Circuit's history, a record that still stands to this day. [2]
Gerard Welter and Michel Meunier, two Peugeot designers, in 1969 created their first racing car in their spare time by obtaining it from the chassis and mechanics of a Peugeot 204 convertible and baptizing it WM P69. Over time they became increasingly involved in this activity and in 1976 made their debut at Le Mans with a GTP car (a closed-body sports prototype) powered by an elaborate version of the Peugeot PRV. The car, built by a team of volunteers, achieved interesting results in subsequent editions but struggled to compare with the Group C cars that arrived on the track starting in 1982. [3]
For this Welter and Meunier changed their programs after the 1986 edition of the French marathon, concentrating their efforts and their limited economic resources on a new and emblematic goal: to overcome the 400 km/h barrier on the Hunaudières straight. The car built for the Objectif 400 project was an evolution of the previous car, as had always been the tradition of the small French house in Thorigny Sur Marne. [4]
Starting from the 1986 car, for the WM P87 the aluminium monocoque chassis with a central reinforcement beam, somewhat conventional, was modified, adding box-like structures in the nose and sides to be able to support the new bodywork, which was significantly wider than the previous one. The independent suspension on the four wheels was also quite conventional. The bodywork was modelled in the Peugeot wind tunnel, which also supplied the engine, where the team carried out tests on Sunday over a period of four months: the resulting shape had an increased width, which covered the wheels and greatly reduced the aerodynamic resistance and a better solution were found for the flow of fresh air to the intercoolers of the two turbochargers, by means of pipes that passed from the nose under the front suspension. As permitted by the Group C regulations, the car exploited the ground effect to generate downforce and the P87 saw the wheelbase and Venturi channels lengthened compared to the model that preceded it, in order to improve aerodynamic efficiency. While most of the downforce was produced from the bottom of the car, there was still a front splitter and a big rear wing, for aerodynamic balancing purposes. [5]
As for the propulsion system, Welter-Meunier had a privileged relationship with Peugeot (Gérard Welter and Michel Meunier working on week days at Peugeot Style Centre - Welter becoming eventually the Director) and their cars had always been powered by highly elaborated versions of the PRV engine that fitted the French manufacturer's sedans. The P87 could count on a 2.8-liter version with double turbocharging of this 90° V6 engine, capable of producing up to 850 hp when the boost pressure was at maximum.
Based on the experience gained with the P87, the new car for 1988 was built with the help of the French coachbuilder Heuliez, called WM P88, refining and lightening the previous car (the weight saving was 65 kg ), equipping it with new rear suspensions that allowed the use of larger Venturi tunnels and creating an engine with a larger displacement and capable of delivering up to 900 hp. [6]
The preparation of the P87 for the race was marred by engine management problems and the car was unable to make two consecutive laps during the pre-race tests, scoring a speed of 356 km/h (221 mph). Once the problems had been resolved, in the first days of June 1987, on the occasion of the inauguration of the new A26 motorway in the stretch from Saint-Quentin to Laon, the car present for an exhibition led by driver François Migault reached 416 km/h (258 mph), confirming the potential of the car. [7]
In the race, the car was plagued, like many other competitors, by poor-quality fuel which damaged the engine and forced it to retire, while it had already been detected by the ACO speed detectors at 381 km/h, although the team claimed to have hit the target, on the basis of surveys made with their own means.
The following year the P88 did 387 km/h in qualifying, but once again the official reading was lower than the real speed of the car: A new tachometer radar was installed at the end of the straight. In the race, however, the P87 and P88 were plagued by problems, which prevented the achievement of the objective. The first had to retire after 13 laps with the transmission in pieces, and the second remained in the pits for more than three and a half hours with engine and bodywork problems before returning to the track with Roger Dorchy at the wheel. After a few laps, the green light came from the pits to raise the pressure turbos and so the French driver reached speeds of over 400 km / h for several laps, with the maximum recorded speed of 405 km/h, but the stresses on the engine, combined with the previous problems, forced him to retire due to electrical problems, of cooling and turbo. [8]
For the 1989 24 Hours of Le Mans, the French manufacturer fielded two cars: a P87 chassis and a P88 chassis; both equipped with minor technical updates and therefore renamed them the P489, recognizable on the outside by a different rear wing. The main objective of the team was not to reach new top speed records, aiming instead to finish the race, and in qualifying it still reached 388 km/h, however in the tests on one of the 2 prototypes (the #51) it developed a fire and was irreparably damaged, while on Pascal Pessiot's #52 a rear tire exploded while it was thrown on Mulsanne's bump at the end of the Hunaudières straight, but the driver managed to control the car. Only the #52 started, but it was forced to retire: Pascal Pessiot after having covered the Hunaudières at a very high speed broke the engine near the Mulsanne corner, then parked it in the escape route of the Indianapolis corner, and on the car, a fire broke out. It was the last year of Welter-Meunier: at the end of the season, the two partners dissolved the company.
After being withdrawn from racing, the WM P88 ended up in the Heuliez collection, which was auctioned in 2012 as part of a corporate restructuring. The P88 was sold without the engine that had allowed it to break the record and which is believed to still be in the hands of Gérard Welter.
The very high speeds achieved by the WMs and other prototypes prompted the FIA and the ACO to modify the Hunaudières straight at Le Mans, breaking it into three sections with two chicanes in 1990; as a result it is no longer possible to reach the 400 km/h barrier on the straight.
The 24 Hours of Le Mans is an endurance-focused sports car race held annually near the town of Le Mans, France. It is widely considered to be one of the world's most prestigious races, and is one of the races—along with the Monaco Grand Prix and Indianapolis 500—that form the Triple Crown of Motorsport, and is also one of the races alongside the 24 Hours of Daytona and 12 Hours of Sebring that make up the informal Triple Crown of endurance racing. Run since 1923, it is the oldest active endurance racing event in the world.
The Sauber C9 is a Group C prototype racing car introduced in 1987 as a continuation of the partnership between Sauber as a constructor and Mercedes-Benz as an engine builder for the World Sportscar Championship. The C9 replaced the Sauber C8.
The Circuit des 24 Heures du Mans, also known as Circuit de la Sarthe located in Le Mans, Sarthe, France, is a semi-permanent motorsport race course, chiefly known as the venue for the 24 Hours of Le Mans auto race. Comprising private, race-specific sections of track in addition to public roads which remain accessible most of the year, its present configuration is 13.626 km (8.467 mi) long, making it one of the longest circuits in the world. The capacity of the race stadium, where the short Bugatti Circuit is situated, is 100,000. The Musée des 24 Heures du Mans is a motorsport museum located at the main entrance of the venue.
The 1995 24 Hours of Le Mans was the 63rd Grand Prix of Endurance, and took place on 17 and 18 June 1995 in one of the wettest races in the event's history with about 17 hours of steady rain. The race was won by the #59 McLaren F1 GTR driven by JJ Lehto, Yannick Dalmas and Masanori Sekiya entered in the GT1 category. This was the first Le Mans win for a driver from Finland and for a driver from Japan. It was also McLaren's first win, at its first attempt - Ferrari had accomplished the same feat with its two cars in 1949, but other manufacturers like Jaguar, Porsche, Ford or Audi achieved their first Le Mans win only after 2, 3 or more attempts. As well as its outright win, the strength of the F1 GTR in the race was underlined by it ultimately filling four of the first five places.
The 1992 24 Hours of Le Mans was the 60th Grand Prix of Endurance, taking place at the Circuit de la Sarthe, France, on the 20 and 21 June 1992. It was also the third round of the 1992 FIA Sportscar World Championship season. The FIA was struggling to assemble sufficient cars for the race, and so the entry-list was extended to include the older Group C cars and national trophy cars. The 28 starters was the lowest since the 1932 race. With the withdrawal of the Jaguar and Mercedes-Benz teams, it looked to be a Peugeot vs Toyota contest, each with very strong driver combinations, with the new Mazdas there waiting for any slip-ups. There were still considerable concerns that the 3.5-litre engines derived from Formula 1 could not last the distance. It was Philippe Alliot who took pole position for Peugeot, in a blistering lap fully five seconds faster than the lap record, with teammate Dalmas second.
The 1989 24 Hours of Le Mans was the 57th Grand Prix of Endurance, taking place at the Circuit de la Sarthe, France, on the 10 and 11 June 1989. This year it was not included as a round of the 1989 World Sports-Prototype Championship. The entry list promised a strong contest between five manufacturers. Jaguar had won in 1988 and went on to win the championship; while Sauber had finished second and was now matching Jaguar on the track. New regulations were coming in 1991, and the first examples of the 3.5-litre normally-aspirated formula were entered by Spice Engineering.
The 1988 24 Hours of Le Mans was the 56th Grand Prix of Endurance as well as the fifth round of the 1988 World Sports-Prototype Championship. It took place at the Circuit de la Sarthe, France, on the 11 and 12 June 1988. At their third attempt, Jaguar arrived with five cars to take on the strong Porsche works team of three cars, in their only race for the Championship season. The other potential rival was Sauber, now formally backed by Mercedes-Benz, but after a major high-speed tyre-blowout in practice, their two-car team was withdrawn.
The 1987 24 Hours of Le Mans was the 55th Grand Prix of Endurance as well as the fifth round of the 1987 World Sports-Prototype Championship. It took place at the Circuit de la Sarthe, France, on the 13 and 14 June 1987. Jaguar was a strong contender, have won the four preceding rounds of the Championship. The Porsche works team had installed a new 3-litre engine into their 962s but their turbo engines would test their fuel economy.
The 1986 24 Hours of Le Mans was the 54th Grand Prix of Endurance as well as the third round of the 1986 World Sports-Prototype Championship. It took place at the Circuit de la Sarthe, France, on 31 May and 1 June 1986. This year saw the return of a full Jaguar works team, to take on the strong Porsche works and customer teams. However, with the fuel regulations relaxed, the turbo-charged cars would be able to use more of their potential power to outrun the normally-aspirated 6-litre Jaguars.
The 1978 24 Hours of Le Mans was the 46th Grand Prix of Endurance, and took place on 10 and 11 June 1978. In many ways it was a continuation of the race from the year before – the two main protagonists would be the very evenly-matched works teams of Alpine-Renault and Porsche, with four cars each. The race was not valid for any championship.
The 1976 24 Hours of Le Mans was the 44th Grand Prix of Endurance, and took place on 12 and 13 June 1976. This year the FIA introduced its new Group 5 and Group 6 regulations and the race was now open to nine distinct classes, although it was still not part of the World Championship seasons. Porsche introduced its new models, the 936 in Group 6, the 935 in Group 5 and the 934 in Group 4. In response, BMW had its modified 3.0 CSL in Group 5. It was the year that turbos arrived in considerable numbers, with over a dozen turbocharged entries, led by the Renault Alpine A442. It saw the arrival of French prototype manufacturers Jean Rondeau and Gérard Welter in a new GTP class and a first-time invitation to American IMSA and NASCAR entries.
The 1969 24 Hours of Le Mans was a motor race staged at the Circuit de la Sarthe, Le Mans, France on 14 and 15 June 1969. It was the 37th Grand Prix of Endurance and was the eighth round of the 1969 International Championship for Makes. The race was open to Group 6 Prototype Sports Cars, Group 4 Sports Cars and Group 3 Grand Touring Cars.
Welter Racing is a French sports car maker that mainly enters in the 24 Hours of Le Mans, since 1990 under the name of Rachel and Gérard Welter, Peugeot's late head of design or Rachel Welter.
The 1926 24 Hours of Le Mans was the 4th Grand Prix of Endurance, and took place on 12 and 13 June 1926. It was the first Le Mans race where the winner's average speed was over 100 km/h (62 mph), and also the first to break the 24-hour distance record set by Selwyn Edge at Brooklands in 1907.
The Renault Alpine A442 is a sports prototype racing car, designed and built by Alpine, but funded and powered by Alpine's owners Renault, specifically to contest the 24 Hours of Le Mans race. Variants were entered for the event in 1976, 1977 and 1978. An A442B finally won the race on the third occasion, in the hands of Didier Pironi and Jean-Pierre Jaussaud. Also entered in 1978 was the updated Renault Alpine A443 model; essentially an A442 chassis, but powered by a new 2138 cc engine. Following this all-French victory in the premier French motorsport event, Renault withdrew from sports car racing to concentrate their efforts in Formula One.
The Nissan R90C was a platform used for Group C racing cars built in 1990 by Nissan Motors for competition in World Sportscar Championship (WSC) based in Europe and the All Japan Sports Prototype Championship (JSPC). The cars based on the basic R90C platform would compete until 1993 before Nissan chose to withdraw from sports car racing, not returning until 1997. It won three JSPC championships and several significant endurance races during its career.
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The Welter-Meunier P87 was a Group C sports prototype race car, designed, developed, and built by French motorsports team Welter Racing in 1987 and used in sports car racing until 1988. Only one model was produced.