Porsche 911 GT1

Porsche committed themselves to a full blown re-thinking of the vehicle for the 1998 race,as the FIA and ACO abandoned the rule that GT1 cars must be based on a production vehicle।Designed to match the Toyota GT-One and Mercedes CLK-GTR, the 911 GT1 '98 featured radical changes to the bodywork and a new sequential gearbox. In 1998, in spite of improvements to the car, the privately entered Porsche's proved to be no match for the works CLKs which also were improved. This was also due to the air-restrictor rules being regarded as unfavourable to the turbo engine. The Michelin tires of the factory team and especially the Pirelli of Zakspeed were considered inferior to the Bridgestone of Mercedes, which also would dominate in F1 for many years.At Le Mans, it was a different story. The new BMW V12 LM retired with wheel bearing trouble, and the Mercedes CLK-LM vehicles had oil pump troubles in the new V8 engines that replaced the former V12. The Toyota GT-One was very fast but also suffered gearbox reliability problems.The revised 1998 model,despite being slower than the Toyota or the Mercedes, fulfilled Porsche's slim hopes, taking both first and second place overall thanks to reliability, giving Porsche its record-breaking 16th overall win at Le Mans, more than any other manufacturer in history.At Petit Le Mans race in Road Atlanta, the 911 GT1/98 of Yannick Dalmas made a spectacular backward flip and landed rear first before hitting the side barriers, as did the BMW V12 LMR at the same race in 2000, and most infamously the Mercedes-Benz CLR at Le Mans in 1999.The GT1 1998 was set up with higher downforce in the race than the previous two years, which reduced its race maximum speed to 310 km/h (193 mph). However, in the 1998 Le Mans 24 Hours test days, the car hit 330 km/h (205 mph) on the Mulsanne Straight on a lower downforce setup.

Specifications:

Price : 1।5 million DM
engine: All Aluminum, Water Cooled, Twin KKK Turbo Flat-6
position: Mid Longitudinal
aspiration: Twin KKk Turbochargers w/Intercooler
valvetrain: DOHC 4 Valves per Cyl
fuel feed Multipoint: Sequential Fuel Injection
displacement: 3164 cc / 193.1 cu in
bore: 95 mm / 3.74 in
stroke: 74.4 mm / 2.93 in
compression: 9.5:1
power: 405.7 kw / 544.0 bhp @ 7000 rpm
hp per litre: 171.93 bhp per litre
bhp/weight: 453.33 bhp per weight
torque: 600 nm / 442.5 ft lbs @ 4250 rpm
drive wheels: RWD w/LSD
body : frame Carbon Fibre Body over 993 Carrera Front Chassis With Rear Tube Frame
front brakes: Internally Vented & Cross Drilled Discs w/8-Piston Calipers, ABS
front brake size: 380 mm / 15.0 in
rear brakes: Internally Vented & Cross Drilled Discs w/4-Piston Calipers, ABS
rear brake size: 380 mm / 15.0 in
front wheels: F 45.7 x 27.9 cm / 18 x 11 in
rear wheels: R 45.7 x 33.0 cm / 18 x 13 in
front tire size: 295/35 ZR 18 Pirelli P Zero
rear tire size: 335/30 ZR 18 Pirelli P Zero
steering: Power Assist
front suspension: Double Wishbones w/Adjustable Shock Absorbers, Anti-Roll Bar
rear suspension: Double Wishbones w/Pushrod Acuated Inboard Spring and Damper Units, Anti-Roll Bar
weight: 1200 kg / 2646 lbs
length: 4710 mm / 185.4 in
width: 1950 mm / 76.8 in
height: 1170 mm / 46.1 in
transmission: Longitudnal 6-Speed Manual
gear ratios: 3.82:1, 2.15:1, 1.56:1, 1.21:1, 0.97:1, 0.75:1
final drive: 3.444:1
top speed: n.a.
0 - 60 mph: 3.6 seconds