Porsche 911 GT1

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Porsche
Porsche 911 GT1 '98
Porsche 911 GT1 '98
911 GT1
Production period: 1996-1998
Class : race car
Body versions : Coupe
Engines:
Boxer engines : 3.16–3.22 liters
(400–440 kW)
Length: 4890 mm
Width: 1990 mm
Height: 1140 mm
Wheelbase : 2500 mm
Empty weight : 950-1250 kg

The Porsche 911 GT1 is a racing car that was designed for participation in the GT1 class at the Le Mans 24-hour race and was also sold as a road car for homologation purposes . In contrast to its sister models 911 GT2 and 911 GT3 , the GT1 was not further developed on the basis of a series vehicle into a roadworthy racing car, but only built in a limited edition as a homologation model for road use.

Despite the name, some do not consider it a real Porsche 911 because it is powered by a water-cooled mid - engine and not the traditional air-cooled rear engine. In addition, it has a completely independent, significantly flatter body made of CFRP . Although their design was largely based on the 911s of the types 993 and 996, the body of the "911" is made of hot-dip galvanized sheet steel.

Model history and vehicle versions

The Porsche 911 GT1 was primarily designed for racing from 1996 and was built in small numbers as a street-legal super sports car for homologation, in order to be used in the USA, in Le Mans and the European BPR Global GT Series and, from 1997, the FIA GT Championship to be admitted. 25 copies were required for this, but the FIA ​​was accommodating. The engine, as usual a six-cylinder boxer, but a water-cooled biturbo engine with 440 kW (600 PS), was based on the power unit of the successful Group C racing cars Porsche 956 C and Porsche 962 and was, as is usual for racing cars in this category, installed in front of the rear axle . A fixed rear wing provided the contact pressure necessary for driving stability at speeds of well over 300 km / h. The Porsche 911 GT1 was produced from 1996 to 1998 in different versions:

Vehicle class Timeline of the Porsche 911 GT racing car
1990s 2000s 2010s
5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9
FIA GT1 993 GT2 Evo 993 GT1 996 GT1 Evo 996 GT1 '98
FIA GT2 / GT (until 2004)
ACO GTS (until 2004) 		993 GT2
FIA N-GT (until 2004)
ACO GT (until 2004)
FIA GT2 (from 2005)
ACO GTE (from 2011) 		996 GT3 R 996 GT3 RS 996 GT3 RSR 997 GT3 RSR 991 RSR 991 RSR
FIA GT3 997 GT3 Cup 997 GT3 Cup S. 997 GT3 R 991 GT3 R 991 GT3 R
Porsche Carrera Cup 993 Cup 3.8 996 GT3 Cup 996 GT3 Cup 996 GT3 Cup 996 GT3 Cup 997 GT3 Cup 997 GT3 Cup 997 GT3 Cup 991 GT3 Cup 991 GT3 Cup

Porsche 911 GT1 (1996)

The racing version of the 1996 Porsche 911 GT1 in the EFA Museum for German Automobile History

The first variant from 1996 was based on the Porsche 993. From the front to the B-pillar - due to the crash regulations for the street legal homologation series - the bodyshell of the Porsche 993 was adopted. A tubular space frame was added from the B-pillar. In addition, the appearance of the Porsche Type 993 was adapted by taking over the headlights and taillights. From this vehicle only 2 cars were built as a street version. From 1997 - due to the model change to the 996 - headlights, rear lights and other external features were adapted to the then current type.

Porsche 911 GT1 Evo (1997)

Street version of the 911 GT1 Evo

The Porsche 911 GT1 Evo, released in 1997, presented itself with an extensively revised body and a new vehicle floor under the front of the vehicle, which ensured improved downforce. The front axle is new, but with 1502 mm has the same track width as in the predecessor. Numerous details were revised by the Porsche engineers , especially with a view to improving service friendliness. On March 7, 1997, the 911, charged by two KKK type K 27 chargers, but again braked by an air restrictor with a diameter of 35.7 mm to 400 kW (544 hp) at 7200 rpm and 600 Nm strong, rolled GT1 Evo, piloted by Bob Wollek , for the first time from the workshop onto the Porsche test track in Weissach -Flacht From 1997 to 1998 Porsche produced a total of 21 vehicles of this type, some of which were also approved for road use and were offered to Porsche customers at a unit price of 1,550,000 DM .

Porsche 911 GT1 '98 (1998)

Street version of the 911 GT1 '98

After the Mercedes-Benz CLK GTR appeared in the 1997 FIA GT championship and proved to be faster, the further developed version GT1 '98 was used in 1998 . This was even flatter than the previous version. Nevertheless, the GT1 '98 lost all races of the 1998 FIA GT Championship against Mercedes, but thanks to its reliability, it happily won in Le Mans on the third attempt against the faster but less reliable opponents. Which also belonged to Toyota with the GT-One , which never hinauskam there for a second. In 1999, no more races were contested, as the successor was developed for 2000, which, however, was never used in racing, but later went into series production as the Porsche Carrera GT . Thanks to a change in the FIA ​​regulations, only a street-legal car (street version) of this type had to be built.

Technical specifications

Porsche 911 GT1: 911 GT1 (1996) 911 GT1 Evo (1997) 911 GT1 '98 (1998)
Engine: 6-cylinder boxer engine with bi-turbocharging (four-stroke)
Displacement: 3200 cc 3163 cc 3220 cc
Bore × stroke: 74.4 x 95.5 mm
Performance at 1 / min: 440 kW (600 hp) at 7200 400 kW (544 hp) at 7200 404 kW (550 PS) at 7200
Max. Torque at 1 / min: 600 Nm at 4250 600 Nm at 4250 630 Nm at 5000
Compression: 9.0: 1 9.0: 1
Valve control: DOHC via double chain, 4 valves per cylinder DOHC via double chain, 4 valves per cylinder
Cooling: Water cooling
Transmission: 6-speed gearbox, limited slip differential, rear-wheel drive
Brakes: Disc brakes (internally ventilated), ABS Carbon-ceramic brake discs front and rear 380 mm (internally ventilated), ABS
Front suspension: Double wishbones
Rear suspension: Double wishbones
Front suspension: adjustable coil springs
Rear suspension: adjustable coil springs
Body: Lightweight construction (body shape similar to Porsche 993 ) Lightweight construction (body shape similar to Porsche 996 )
Track width front / rear: 1502 mm / 1588 mm 1502 mm / 1588 mm 1640 mm / 1615 mm
Wheelbase : 2500 mm
Tires rim: 270 / 35-19 (front) / 310 / 35-19 (rear)
Dimensions L × W: 4683 × 1946 mm 4710 × 1980 mm 4890 × 1990 mm
Empty weight : approx. 1000 kg 1250 kg 950 kg
Top speed: approx. 320 km / h approx. 310 km / h approx. 325 km / h

Test values ​​of the street version

The street version was tested by auto, motor und sport in 1997 :

  • Displacement 3163 cm³, 6 cylinders, 400 kW (544 PS)
  • L × W × H 4710 × 1950 × 1170 mm
  • Empty weight 1150 kg
  • 0–50 km / h 2.1 s
  • 0-100 km / h 3.9 s
  • 0–130 km / h 5.4 s
  • 0–160 km / h 7.1 s
  • 0–180 km / h 8.8 s
  • 0-200 km / h 10.5 s
  • 0–250 km / h 17.4 s
  • 400 m with standing start 11.6 s
  • 1 km with a standing start 20.7 s
  • Top speed 308 km / h
  • Braking distance from 100 km / h 36.0 m (deceleration 10.7 m / s²)
  • Braking distance from 200 km / h 130.8 m (deceleration 11.8 m / s²)

statistics

Daytona Results

year No. team driver driver driver driver driver Round Rank
(total) 		Rank
(class)
1998 00 FranceFrance Larbre Competition FranceFrance Christophe Bouchut FranceFrance Patrice Goueslard SwedenSweden Carl Rosenblad GermanyGermany André Ahrlé 667 3 2
1998 01 United StatesUnited States Rohr Motorsport United KingdomUnited Kingdom Allan McNish United StatesUnited States Danny Sullivan GermanyGermany Jörg Müller GermanyGermany Uwe Alzen GermanyGermany Dirk Mueller 703 2 1
1998 38 United StatesUnited States Champion Motors BelgiumBelgium Thierry Boutsen United StatesUnited States Andy Pilgrim GermanyGermany Ralf Kelleners 614 19 (DNF) 4 (DNF)
2001 0 CanadaCanada Bytzek Motorsports CanadaCanada Scott Maxwell CanadaCanada David Empringham CanadaCanada Richard Spenard CanadaCanada Klaus Bytzek 479 41 9
2001 01 CanadaCanada Bytzek Motorsports United StatesUnited States Larry Schumacher CanadaCanada Harry Bytzek CanadaCanada John Brenner CanadaCanada James Holtom 632 6th 3
2001 76 United StatesUnited States Gunnar Racing United StatesUnited States Gunnar Jeannette United StatesUnited States Wayne Jackson United StatesUnited States Paul Newman United StatesUnited States Mike Brockman 37 78 (DNF) 14 (DNF)
2002 00 CanadaCanada Bytzek Motorsports CanadaCanada David Empringham CanadaCanada Klaus Bytzek CanadaCanada Richard Spenard CanadaCanada James Holtom 499 32 (DNF) 5 (DNF)
2003 6th United StatesUnited States Gunnar Racing United StatesUnited States Gunnar Jeannette United StatesUnited States Duncan Dayton United StatesUnited States Peter Kitchak United StatesUnited States Ron Zitza 9 43 (DNF) 13 (DNF)

Le Mans results

year No. team driver driver driver Round Rank
(total) 		Rank
(class)
1996 25th GermanyGermany Porsche AG GermanyGermany Hans-Joachim Stuck BelgiumBelgium Thierry Boutsen FranceFrance Bob Wollek 353 2 1
1996 26th GermanyGermany Porsche AG AustriaAustria Karl Wendlinger FranceFrance Yannick Dalmas CanadaCanada Scott Goodyear 341 3 2
1997 25th GermanyGermany Porsche AG GermanyGermany Hans-Joachim Stuck BelgiumBelgium Thierry Boutsen FranceFrance Bob Wollek 238 DNF DNF
1997 26th GermanyGermany Porsche AG FranceFrance Emmanuel Collard GermanyGermany Ralf Kelleners FranceFrance Yannick Dalmas 327 DNF DNF
1997 27 ItalyItaly BMS Scuderia Italia ItalyItaly Pierluigi Martini ItalyItaly Christian Pescatori BrazilBrazil Antonio de Azevedo Hermann 317 8th 4th
1997 28 GermanyGermany Konrad Motorsport GermanyGermany Franz Konrad ItalyItaly Mauro Baldi United KingdomUnited Kingdom Robert Nearn 138 DNF DNF
1997 29 FranceFrance JB Racing GermanyGermany Jürgen von Gartzen FranceFrance Olivier Thévenin FranceFrance Alain Ferté 236 DNF DNF
1997 30th GermanyGermany Kremer Racing FranceFrance Christophe Bouchut United StatesUnited States Andy Evans BelgiumBelgium Bertrand Gachot 207 DNF DNF
1997 32 GermanyGermany Roock Racing MonacoMonaco Stéphane Ortelli United KingdomUnited Kingdom Allan McNish AustriaAustria Karl Wendlinger 8th DNF DNF
1997 33 GermanyGermany Schübel Engineering PortugalPortugal Pedro Lamy GermanyGermany Armin Hahne FranceFrance Patrice Goueslard 331 5 3
1998 25th GermanyGermany Porsche AG GermanyGermany Jörg Müller GermanyGermany Uwe Alzen FranceFrance Bob Wollek 350 2 2
1998 26th GermanyGermany Porsche AG FranceFrance Laurent Aïello United KingdomUnited Kingdom Allan McNish MonacoMonaco Stéphane Ortelli 351 1 1

Cars that were only on the entry list without having started are not listed.

Sebring results

year No. team driver driver driver Round Rank
(total) 		Rank
(class)
1999 4th United StatesUnited States Champion Racing BelgiumBelgium Thierry Boutsen FranceFrance Bob Wollek GermanyGermany Dirk Mueller 310 4th 4th

literature

  • Thomas Agethen; Walter, Sigmund: Type compass Porsche. Passenger cars since 1948. Motorbuch Verlag, Stuttgart 2003, ISBN 3-613-02157-9
  • Tobias Aichele: Porsche 911 - Forever young. Motorbuch Verlag, Stuttgart 2004, ISBN 3-613-01546-3
  • Jörg Austen: Porsche 911 rally and racing cars. The technical documentation. Motorbuch Verlag, Stuttgart 2005, ISBN 3-613-02492-6
  • Marc Bongers: Porsche. Series vehicles and sports cars since 1948. Motorbuch Verlag, Stuttgart 2004, ISBN 3-613-02388-1
  • Paul Frère : The Porsche 911 Story. Motorbuch Verlag, Stuttgart 2002, ISBN 3-613-02225-7
  • Achim Kubiak: Fascination 911. The typology of the Porsche 911. Delius Klasing Verlag, Bielefeld 2004, ISBN 3-7688-1581-1
  • Randy Leffingwell: Porsche 911 - Perfection and Design. HEEL Verlag, Königswinter 2007, ISBN 3-89880-641-3
  • Peter Schneider: Type compass Porsche. Racing and racing sports cars since 1948. Motorbuch Verlag, Stuttgart 2003, ISBN 3-613-02300-8

Web links

Commons : Porsche 911 GT1  - Collection of pictures, videos and audio files

Individual evidence

  1. ↑ a b Jürgens, Malte: Moby Quick - TEST of the Porsche 911 GT1. In: “auto motor und sport” , issue 10, May 2, 1997, pp. 18–24.
  2. ↑ a b Dr. Ing. H. c. F. Porsche AG: 1997 Porsche 911 GT1 Evo on: www.porsche.de . October 24, 2006 1:35 p.m.
  3. ↑ Hack / Long Cable: Turbo and Compressor Motors . Development and technology. Motorbuch Verlag, Stuttgart. 1st edition 1999, p. 330, ISBN 3-613-01950-7
  4. ^ Bongers, Marc: Porsche. Series vehicles and sports cars since 1948. Motorbuch Verlag, Stuttgart. 1st edition 2004, pp. 159-160 and 181, ISBN 3-613-02388-1
  5. ↑ Daytona 24 Hours 1998 (Race Results). In: racingsportscars.com. Retrieved March 10, 2019 .
  6. ↑ Daytona 24 Hours 2001 (Race Results). In: racingsportscars.com. Retrieved March 10, 2019 .
  7. ↑ Daytona 24 Hours 2002 (Race Results). In: racingsportscars.com. Retrieved March 10, 2019 .
  8. ↑ Daytona 24 Hours 2003 (Race Results). In: racingsportscars.com. Retrieved March 10, 2019 .
  9. ↑ Le Mans 24 Hours 1996 (Race Results). In: racingsportscars.com. Retrieved March 10, 2019 .
  10. ↑ Le Mans 24 Hours 1997 (Race Results). In: racingsportscars.com. Retrieved March 10, 2019 .
  11. ↑ Le Mans 24 Hours 1998 (Race Results). In: racingsportscars.com. Retrieved March 10, 2019 .
  12. ↑ Sebring 12 Hours 1999 (Race Results). In: racingsportscars.com. Retrieved March 10, 2019 .