The new challenger for GT3 series around the world is based on the current 992 generation.
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At the core of the new racing car is the near-standard engine based on the 992-generation 911 power plant. Like in the previous model, it is a water-cooled flat-six engine with four-valve technology and direct fuel injection. The main new development is the displacement: like the 911 RSR, the capacity of the new 911 GT3 R has increased by a good five per cent from 3,997 to 4,194 cc. This has boosted the engine’s peak output to around 416 kW (565 PS).
First and foremost, however, Porsche has optimised the torque and power curve across the entire rev range. Consequently, the new 4.2-litre six-cylinder is better suited to gentleman drivers. The high-revving six-cylinder manages without turbocharging and sits in the classic rear position, thus enhancing traction and braking. However, it has been tilted forwards by 5.5 degrees, creating more leeway for the underbody diffuser. Auxiliary units such as the alternator and the air conditioning compressor were moved a good metre forward and further down into a space in front of the engine and gearbox, which has a positive effect on the weight balance of the 911 GT3 R.
The sequential six-speed contest-mesh gearbox is derived from the current 911 GT3 Cup. Shift paddles control an electronic shift drum actuator that enables particularly rapid and precise gear changes. The new 911 GT3 R’s suspension supports driveability, allows more precise steering, ensures less wear on the rear tyres and reduces the time spent on set-up changes. For this, numerous components and technical solutions were taken from the 911 RSR. At the front axle, a state-of-the-art double wishbone layout controls the wheels.
The rear axle sports a multi-link design. The KW shock absorbers were further improved and offer five adjustment settings. Set-up modifications are done with so-called shims. These plates enable precision adjustments without the need for the time-consuming re-alignment of the suspension afterwards. In addition to the aluminium monobloc racing brake callipers, the brake discs on the new 911 GT3 R are now also supplied by the specialist company AP. ■
Monsoonal moisture will continue to draw northward from the Southwest and pool with moisture from the Gulf of Mexico over the central U.S. along a sprawling, slow-moving frontal boundary.
