iRacing Sportscar Series
Cars
Porsche 911 GT3 R (992)
The latest in a long line of Porsche 911s built for sports car racing, the 992-spec edition of the Porsche 911 GT3 R follows in the footsteps of the 991-based GT3 R that debuted for the 2019 racing season. It also joins the current model of the Porsche 911 GT3 Cup car, which debuted in 2021, as a racing Porsche based on the 992 generation. In its inaugural IMSA WeatherTech SportsCar Championship season, five teams-Pfaff Motorsports, MDK Motorsports, Wright Motorsports, AO Racing Team, and Kelly-Moss with Riley-have all brought at least one 992 to the grid across the GTD and GTD Pro divisions.
The 911 GT3 R (992) is powered by a 4.2-liter Porsche flat-six engine, a step up in displacement from the 4.0-liter units in the previous car. Its first IMSA win came at the hands of Pfaff's GTD Pro squad of Klaus Bachler, Patrick Pilet, and Laurens Vanthoor in the 2023 12 Hours of Sebring, and the duo of Bachler and Pilet backed it up the next month with a third place finish on the streets of Long Beach. Kelly-Moss with Riley took the car's first GTD podium at Sebring as well with Alec Udell, Julien Andlauer, and David Brule.
Detailed Specifications
Water-cooled six-cylinder boxer engine (rear mounted) based on 992 engine generation
Single mass flywheel
Four-valve technology
Direct fuel injection
Dry sump lubrication with oil/water heat exchanger
Engine control unit (ECU) BOSCH MS 6.6
Race exhaust system with twin tailpipes mounted centrally
Carbon fiber intake manifold and 6 throttle butterflies
Catalytic converter
Porsche Motorsport Traction Control
Displacement:
4,194 cm3
Power:
416 kW/565 HP subject to FIA BoP classification
Transmission:
Six-speed constant-mesh gearbox
Internal pressurized oil lubrication with heat exchanger
Mechanical limited slip differential with adjustable preload mechanism
Motorsport carbon clutch
Electrohydraulic clutch actuator
Paddle shift with electronic shift barrel actuator
Integration of AC compressor and alternator mounted in front of gearbox
Front axle:
Double wishbone front suspension with hydraulicly power assisted steering
Rear axle:
Improved multilink independent rear suspension
High-performance spherical bearings
Wheel hubs with center lock wheel nuts
Motorsport dampers; 5-way adjustable including blow-off
Damper potentiometers
Adjustable anti-roll bar blades (left & right)
Shim adjustment system
Brakes:
Two separate brake-circuits for front and rear axles
Six-piston (front)
Four-piston (rear axle) aluminium-monobloc racing brake calipers
Ventilated and grooved steel brake disc
Motorsport brake pads
Optimized brake cooling ducts
Brake temperature sensors
Improved BOSCH Race ABS Generation 5
Total weight:
Approx. 1250 kg (subject to BoP)
Overall length:
4,619 mm (without aerodynamic devices)
Overall width front axle:
2,039 mm
Overall width rear axle:
2,050 mm
Wheelbase:
2,507 mm
Wheels/Tires:
One piece BBS alloy wheels, according to Porsche specification and design, 12.5 J x 18 (front); 13.0 J x 18 (rear)
Michelin transport tires; tire dimensions: 30/68-18 (front); 31/71-18 (rear)
