1986 Porsche 962T
he Porsche 962 endurance prototype coupe, introduced in 1984, quickly became one of the most dominant and successful racing designs in history. Derived from the earlier Type 956 Coupe which had been introduced in 1982, developed for Europe's World Sportscar Championship Group C, it was developed as an entry for IMSA's GTP series and initially powered by a derivative of the highly successful 2.8-liter, air-cooled flat-six 935 engine with a single KKK turbocharger.
Instead of using a tubular spaceframe chassis design as they had in the past, the 956 was given an aluminum monocoque. It retained the Type 935 flat six-cylinder engine of the 936, to which twin KKK turbos and an all-synchro five-speed gearbox were fitted. The inboard rear suspension allowed for the creation of two large venturi channels to maximize ground effects underneath the car. Reputedly, the 956 generated over three times as much downforce at speed as the 917.
The 956 had not satisfied the requirements and regulations of IMSA GTP, mainly the location of the pedal box, which was positioned ahead of the front axle, and the racing engine. The 962 was essentially a long-wheelbase version of the 956 with the pedal box behind the front axle. The wheelbase changed but the overall length remained the same due to shortening the nose. The suspension was nearly identical with double wishbones at the front with the rear using lower wishbones in-board, and rocker actuated springs and dampers.
IMSA GTP regulations stated that the engine was to be a production-based unit. So Porsche engineers based the 962 engine on the Porsche 911 Turbo. It was given a displacement of just over 2.8 liters and using the 1.4x turbo equivalency formula, the 962 was grouped into the Under 4-liter category. The single camshaft engine was produced approximately 680 horsepower and was backed by a five-speed gearbox.
A single works 962 preceded the customer's cars and was built for testing and development. Mario and Michael Andretti entered it in the 1984 Daytona 24 Hours where they qualified on pole position with a time that was nearly two seconds faster than the second-place car. This would be the only race for the Porsche 962 prototype and the only Works team entry in GTP. Porsche left the IMSA GTP championship to be contested by privateers while they focused its efforts on the World Championship. Perhaps to be expected from an untested car, the 962 retired on lap 127 from Daytona due to engine and transmission problems.
The production examples were ready beginning in April of 1984. During its inaugural year, the 962 would score seven victories. American Preston Henn entered the IMSA GTP class at the 24 Hours of Le Mans in 1984 where it was driven by Henn, Michel Ferte, and Edgar Doren. Their day ended on lap 247 after ignition failure and received an overall classification of 26th position.
To create more competition, IMSA eased its restrictions by 1985, allowing the Porsche to run larger 3.2-liter engines that offered 720 horsepower. Preston Henn entered a 962 at the seasons opening Daytona 24 Hours and scored an overall victory. The car won again a month later at the Sebring 12 Hours. The Porsche would win nearly every race (all races except one) in the GTP class during the 1985 season. This dominance would continue until the start of the 1988 season when Nissan introduced its new Works entry.
Porsche introduced the 962C in 1985 for the World Sprotscar Championship. Ironically, it would lose to its 956 sibling, which had already earned WEC top-honors on four occasions. In 1987, a 962C powered by a new 3.0-liter engine claimed overall victory at the 24 Hours of LeMans, scoring Porsche's seventh consecutive victory at the race.
IMSA attempted to level the playing field in the late 1980s, which allowed the 962s to run twin turbochargers and water-cooled cylinder heads, although their air intakes were limited to 36 millimeters.
Porsche allowed customers to build new and replacement chassis, and modifications to the original design. Popular changes included honeycomb aluminum sections for increased strength and rigidity, revised bodywork, improved aerodynamics, and various mechanical changes. Joest Racing built a pair of highly modified 962s for the IMSA GTP Championship in 1993 in hopes of better competing with Jaguar, and earned the 962's final sprint race victory (at Road America) that season.
Porsche's racing department built a total of ninety-one examples of the 962 between 1984 and 1991, with seventy-five of them being built as customer cars and 16 being used by the factory team. Like the 956 program, the 962s built for the works team began with chassis 001 and received many technically advanced features. The customer cars began with chassis 962-101 and its mechanical setup was more standardized. The factory 962s typically wore the Rothmans colors, though for the 1988 24 Hours of Le Mans the works team cars donned a new Shell-Dunlop livery. Even after Porsche withdrew its factory entry in 1988, they continued to build additional 962C chassis for privateers.
The Porsche 962 would score 48 of 68 victories in IMSA GTP between 1984 and 1987, including 1-2-3 finishes at both Daytona and Sebring for three consecutive years. They earned two outright Le Mans victories, and numerous victories and podium finishes in Group C. The Porsche 956 and 962 won Le Mans six times, finishing 1-2-3 every year except 1987 when they were a mere 1-2. Campaigned by the Porsche works team and well-funded private entries, the 956 and 962 captured the World Endurance Manufacturers' and Drivers' Championship (1982–1985), the World Sports Prototype Manufacturers' and Drivers' Championships (1986–1987), the IMSA GTP Manufacturers' Championship (1985–1988), and the IMSA GTP Driver's Championship (1985–1987), along with numerous other important victories and series championships.
The Porsche 956 and its close sibling, the 962 enjoyed an international career that spanned some thirteen years, including no less than seven Le Mans wins and five World Sportscar Championship titles. They are arguably the greatest long-distance sports racing cars of all time.by Daniel Vaughan | May 2020
he Porsche 962 was designed for the International Motor Sports Association GTP racing and as a replacement for the Porsche 956. The 956 had been a highly successful race car and had captured many triumphs including the 24 Hours Le Mans and the FIA series.
American John Bishop, the founder of the International Motor Sports Association, was responsible for the longer wheelbase on the 956. When the 956 was introduced, Bishop refused to accept the vehicle partly because of safety concerns. The pedals were mounted in front of the front axle line. To comply with safety concerns and new regulations, the 956 was stretched to make room for the pedal box. A roll cage was later added.
The Porsche 962 was first raced by the factory in the 1984 season which opened at the Daytona 24 Hours. Driven by Mario and Michael Anderti, it was retired due to engine and gearbox problems. A total of five Porsche 962 models had been constructed for the 1984 season and all were powered by a 2.8-liter water-cooled power plant. Part-way through the season, a 3.2-liter Type 935 six-cylinder engine with mechanically injected turbo was placed into one of the 962 models. A short-tail improved the aerodynamics and the Porsche 962 was poised to conquer the racing circuit. Which it did, capturing victories at the Daytona 24 Hours race five times.
The Porsche 962C, introduced in 1985 for the World Endurance Championship, had a twin-turbocharged 3000 cc water-cooled engine producing 750 horsepower. The engines were built to last 26 hours. This included two hours for testing and then racing for 24 hours straight. The acceleration, braking, and road handling was impressive, thanks in-part to its 900 kg bodyweight. The aerodynamics was effective at holding the car on the road. During a qualification run at LeMans during the 1985 season, it proved to be the quickest vehicle. However, at the end of the 24 hour race it was in second place to a Porsche 956, the 956 having scored its fourth consecutive victory. The Porsche 956 chassis number 117 became on of the few in history to achieve back-to-back first place trophies at LeMans, winning in 1984 and 1985. The vehicle had been entered by Privateer Reinhold Joest.
The World Endurance Championship, WEC, changed the name to World Sports Prototype Championship, WSPC, in 1986. The Porsche 962 had another successful season, similar to 1985. At LeMans, two of the three Porsche 962C's entered were retired due to mechanical problems. The final Porsche 962C was able to score victory.
In 1987, the FIA adopted the IMSA regulation requiring the pedal-box to be installed behind the front-axle, making the Porsche 956 obsolete. The Porsche 962 was showing its age as the Jaguars and Mercedes were beginning to outpace the vehicle at most of the World Championship races. For LeMans however, the 962 captured its sixth consecutive victory after most of the field had been forced to retire. It was the last LeMans victory for the Porsche 962 until 1994 when enough examples had been produced making it eligible for the newly created GT1 class.
For over ten years, the Porsche 962 dominated the racing circuit to include the 24 Hours of LeMans, Daytona, FIA and IMSA racing. The Porsche 962 was so popular and so competitive that even their 1,000,000 price tag could not keep up with demand. Nearly 150 were sold and because of such a large customer program, every component was available off the shelf direct from Porsche.by Daniel Vaughan | Aug 2005
Related Reading : Porsche 956 and 962 History
Porsche created the 956 during the early 1980s for FIA Group C competition. The design and components of the vehicle would further evolve over the years and become known as the 962. The 956 project was lead by a very determined and experienced project manager named Norbert Singer, who had his sights set on winning the 24 Hours of LeMans race. With Derek Bell and Jacky Ixckx, the factory team drivers,....Continue Reading >>
Chassis Num: 962-122
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Chassis Num: 962/F01 (HR3F)
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Chassis Num: 962-121
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Chassis Num: 962-113
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Chassis Num: 962-003
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Chassis Num: 962-120
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Chassis Num: 962-122
The 22nd customer 962 chassis was constructed by Porsche and delivered to Dyson Racing for the 1986 IMSA racing season to be campaigned in the RC Cola livery. The first race outing was Watkins Glen in June of 1986 which ended in disaster as it crashe....[continue reading]
Chassis #: 962/F01 (HR3F)