The 2007 Porsche 911 Turbo and Its Upgraded Braking System
The sixth generation of the range-topping 911 model provides unmatched performance in a practical, stylish and functional package perfect for everyday use. Power comes from a revolutionary, 480-horsepower, twin turbocharged, 3.6-liter boxer engine featuring Porsche’s first application of variable turbine geometry (VTG). It also features an all-new upgraded brake system.
The 2007 911 Turbo features a brake system even more efficient than on the former model. The brake concept on the front wheels has been carried over from the Carrera® GT, with six-piston brake calipers in conjunction with 350mm (13.78″) brake discs ensuring impressive stopping power. The new brake configuration also feeds more brake power to the rear wheels, where four-piston brake calipers again interact with brake discs measuring 350mm in diameter. Two other features are pre-loading of the brake system and Brake Assistant, both serving to shorten stopping distances even further when applying the brakes suddenly. The new 911 Turbo is also available as an option with Porsche Ceramic Composite Brakes (PCCB® ) for truly outstanding braking qualities ensured by ceramic brake discs, and further developed in even larger dimensions than before.
For the first time, the power unit of the new Porsche 911 Turbo features an exhaust gas turbocharger with variable turbine geometry (VTG). VTG provides for efficient control of the exhaust gas flow throughout the entire range of engine speed, guiding the flow of air in exactly the right direction and at the right angle to the turbine blades. The result is yet another increase in engine output, despite engine capacity remaining unchanged at 3.6 liters, up from 420 horsepower to 480 horsepower. Maximum torque, in turn, is up from 415 lb.-ft. to 460 lb.-ft., and meaningful twist is on tap beginning at a low 1950 rpm.
Equipped with a six-speed manual gearbox, the new 911 Turbo accelerates to 60 mph in only 3.7 seconds (0-100 km/h, 3.9 sec.). Equipped with the optional Tiptronic S, the car completes the same sprint in only 3.4 seconds (0-100 km/h, 3.7 sec.). This makes the new 911 Turbo the first sports car from Porsche with quicker acceleration with the automatic transmission than with the manual. This is the result of the interaction of the turbochargers with their variable turbine geometry, the Porsche Traction Management, and the new Tiptronic S set-up.
For the first time the optional Sports Chrono Package Turbo provides a brief Overboost of power. With the Sport button engaged, and under full throttle during mid-range engine speeds, turbocharger boost pressure is temporarily increased, boosting torque by 45 lb-ft (60 Nm) to a staggering 505 lb-ft (680 Nm). This Overboost is an advantage in short, interim acceleration and overtaking maneuvers.