Technical Specs of Porsche’s New Mid Engine 911 RSR

Earlier today, at the LA Autoshow, Porsche unveiled their all new 911 RSR complete with its flat-six engine positioned in front of the rear axle. As per Porsche’s press release, the race car is completely new. The suspension, body structure, aerodynamic concept, engine and transmission have all been designed from scratch.

“While retaining the typical 911 design, this is the biggest evolution in the history of our top GT model,” says Head of Porsche Motorsport Dr. Frank-Steffen Walliser.

Here are the technical specification of the 2017 Porsche 911 RSR

• Concept: Single-seater racecar for the LM-GTE (WEC) and GT Le Mans (IMSA) categories

Weight/Dimensions

• Weight: 1,243 kg (2,740.35 lbs.) (base weight per regulations)
• Length: 4,557 mm (179.41 inches) (without splitter, rear wing, diffuser)
• Width: 2,042 mm (80.39-inches) at the front axle / 2,048 mm (80.63-inches) at the rear axle
• Wheelbase: 2,516 mm (99.06-inches)

Engine

• Water-cooled six cylinder boxer, positioned in front of the rear axle;
• 4.0-liter, stroke 81.5 mm (3.21-inches), bore 102 mm (4.02-inches);
• Approximately 510 hp (375 kW) depending on restrictor;
• Four-valve technology;
• Direct fuel injection;
• Dry sump lubrication;
• Single mass flywheel;
• Power output limitation via restrictor;
• Electronic throttle.

Transmission

• Six-speed sequential constant-mesh gearbox;
• Two-shaft longitudinal layout with bevel gear;
• Shifting via electronic shift actuator;
• Shift paddles on the steering wheel;
• Magnesium gearbox casing;
• Multi-disc self-locking differential with visco unit;
• Three disc carbon race clutch.

Body

• Weight-optimized chassis in combined aluminum steel design;
• Removable roof hatch for cockpit access;
• Lifting bushes integrated in the roof;
• FT3 fuel cell in front of the car;
• Welded-in roll cage;
• Seat pursuant to FIA 8862-2009;
• Rigidly mounted to the chassis;
• Six-point safety harness for use with HANS;
• Longitudinally adjustable pedals;
• Bodywork made of CFRP, quick-change;
• Rear wing with “swan neck” mounts;
• Four-post air jack system with safety pressure valve;
• Electronically activated fire extinguisher system;
• Heated windscreen.

Suspension

Front axle:

• double wishbone front axle;
• Four-way vibration damper;
• Twin coil spring setup (main and helper spring);
• Anti-roll bars, adjustable by blade positions;
• Electro-hydraulic power steering

Rear axle:

• Integrated rear axle subframe with double wishbone axle;
• Four-way vibration damper;
• Twin coil spring setup (main and helper spring);
• Anti-roll bars, adjustable by blade positions;
• Tripod drive shafts.

Brakes

Two independent brake circuits for front and rear axle, adjustable via balance bar.

Front axle:

• One piece aluminum six-piston racing calipers with quick coupling;
• Internally ventilated steel brake discs, 390 mm (15.35-inch) diameter;
• Race brake pads;
• Optimized brake cooling ducts.

Rear axle:

• One piece aluminum four-piston racing calipers with quick coupling;
• Internally ventilated steel brake discs, 355 mm (13.98-inch) diameter;
• Race brake pads;
• Optimized brake cooling ducts.

Wheels/Tires

Front axle: One piece forged light alloy wheels, 12.5Jx18 offset 25 with center-lock nut; Michelin slick 30/68-18.

Rear axle: One piece forged light alloy wheels, 13Jx18 offset 37 with center-lock nut; Michelin slick 31/71-18.

Electronics

• Cosworth Central Logger Unit;
• CFRP multi-functional steering wheel with integrated display;
• Shift paddles and quick release;
• Collision Avoidance System;
• Controlled alternator in connection with LiFePo4 battery;
• LED headlights;
• LED taillights plus rain light;
• Illuminated car number and leader light system;
• Black light inside cockpit;
• Electric adjustable wing mirrors with memory function;
• Tire pressure monitoring system (TPMS);
• Drink system;
• Air conditioning system;
• Membrane switch panel on center console with fluorescent labeling.