911 GT3 R

(991, Gen. 2)
All technical details and data are provisional until the final approval is received through FIA.

Concept
Single-seater customer race car based on the Porsche 911 GT3 RS

Engine
• Water-cooled six-cylinder boxer engine (rear mounted)
• 4,000 cm3; stroke 81.5 mm; bore 102 mm
• Output: over 404 kW (550 hp) without restrictors, actual output dependent on  FIA BoP (restrictor)
• Single mass flywheel
• Four-valve technology
• Direct fuel injection
• Fuel supply: Super Plus lead free, to E20 (min. 98 Octane)
• Dry sump lubrication
• Electronic engine management BOSCH MS 6.4 with integrated data acquisition (basic memory 1 GB, max. 100 freely selectable channels)
• Race exhaust system (motorsport catalyst and country-specific pre-silencer available)
• Six electronically operated throttle valves

Transmission
• Porsche sequential six-speed constant-mesh gearbox
• Mechanical slip differential with external  pre-load adjustment
• Racing clutch
• Paddle-shift with electronic shift drum actuator

Bodyshell
• Lightweight body featuring intelligent aluminium-steel composite design
• Welded-in roll cage according to FIA regulations
• Removable escape hatch in roof in accordance with the latest FIA regulations
• Vehicle recovery system tow points
• Lightweight exterior: CFRP doors with racing mirrors, CFRP rear lid with quick release fasteners, CFRP rear wing, adjustable, CFRP extended front fenders and wheel arch louvers, CFRP front fairing and cooling air ducting, CFRP rear fairing, Polycarbonate glazing, Removable polycarbonate door windows
• Modified 911 cockpit: CFRP interior trim, Ergonomic centre console aligned to driver with digital multi-touch panel, Multi-function racing steering wheel with quick release coupling and shift paddles
• Racing bucket seat in accordance with FIA standard 8862/2009: Six-point fixed bolting, Integrated air conditioning
• Six-point safety harness
• Ca. 120-litre FT3 safety fuel cell with fuel cut off safety valve in accordance with FIA regulations and changeable left and right refuelling
• Air jack system (four jacks)

Suspension

Front axle
• Double wishbone front axle
• Forged aluminium control arms: Stiffness-optimised, High performance spherical bearings
• Wheel hubs with centre-lock wheel nuts
• Motorsport vibration damper, 4-way adjustable
• Anti-roll bar, adjustable by blade position
• Power-assisted steering with electro-hydraulic pressure feed
• Setup changes without new alignment via shim system

Rear axle
• Multi-link rear axle
• Machined aluminium control arms, stiffness optimised with high performance spherical bearings
• Wheel hubs with centre-lock wheel nuts
• Motorsport vibration damper, 4-way adjustable
• Machined aluminium mounts
• Anti-roll bar, adjustable by blade position
• Setup changes without new alignment via shim system

Brake system
• Two separate brake circuits for front and rear axles, adjustable by driver via balance bar system

Front axle
• Six-piston aluminium monobloc racing brake calliper
• Steel brake discs, multi-piece, ventilated, D = 390 mm
• Racing brake pads
• Twin-flow brake cooling ducts

Rear axle
• Four-piston aluminium monobloc racing brake calliper
• Steel brake discs, multi-piece, ventilated, D = 370 mm
• Racing brake pads
• Twin-flow brake cooling ducts

Rims/Tyres

Front axle
• One-piece BBS alloy wheels according to Porsche specification, 12.5 J x 18
• Michelin transport tyres; tyre dimension: 300/680-18 

Rear axle
• One-piece BBS alloy wheels according to Porsche specification, 13J x 18
• Michelin transport tyres; tyre dimension: 310/710-18

Electrics
• COSWORTH colour display CDU
• COSWORTH Logger CLU (6 GB memory)
• COSWORTH power management system IPS48 MK2
• Porsche Motorsport traction control PMTC
• Fire extinguisher system (agent: gas)
• Battery 12 V, 60 Ah (LiFePo lithium ion), leak-proof, mounted in passenger footwell
• Multifunctional CFRP motorsport steering wheel with quick release coupling
• Digital multi-touch panel
• BOSCH LIN 175A alternator regulator
• BOSCH racing-ABS, generation 5
• Single-blade wiper with direct drive
• Optional BOSCH CAS Integration (race ready)
• LED main headlights
• Rear and rain lights with LED technology

Optional (factory installation)
• IMSA kit: Windshield braces, Rear window braces
• Sensor package
• FIA endurance kit: 2 LED extra lights in front fairing, Clutch fan, Telemetry GSM Low-Band (R+)
• Motorsport catalyst (depending on regulations)
• Heated windshield 

After-sales options
• Option 1: Channel extension for detailed engine data recording, fastest recording rate 1,000 Hz
• Option 2: Data copy from internal memory of the engine data recording to an external USB stick
• More options: Front silencer, Tyre pressure monitoring system (TPMS), Cockpit lighting, Start number illumination, 2 LED auxiliary headlights

Weight/dimensions
• Total weight:                        tbd (BoP dependent)
• Overall length:                    4,629 mm
• Overall width front axle:     1,975 mm
• Overall width rear axle:      2,002 mm
• Wheelbase:                        2,459 mm

Colour
• 
Body painted with water-soluble paint: white C9A
• Interior: white primer with clear-coat finish
• Body parts in plain carbon (front and rear fairings, front lid, rear lid, doors, wheel arches, rear wing)

 911 GT3 Cup

911 GT3 Cup

911 GT3 Cup

Concept
 • Single-seated, near-standard race  vehicle
 • Based on the 911 GT3

Engine
 • Aluminum six-cylinder rear-mounted boxer engine
 • Sealed
 • 3,800 cc; stroke 76.4 mm; bore 102.7 mm
 • Max. power: 338 kW (460 hp) at 7,500 rpm
 • Max. rpm: 8,500 rpm
 • Single-mass flywheel
 • Water cooling with heat management for engine and gearbox
 • Four valves per cylinder
 • Sequential multi-point fuel injection
 • Required fuel quality: minimum 98 octane, unleaded
 • Dry-sump lubrication
 • Electronic engine management (Bosch MS 4.6)
 • Race exhaust system with regulated race catalytic converter
 • Rear silencer with centered exhaust pipes
 • Electronic acceleration pedal

Transmission
 • Porsche six-speed sequential dog-type gearbox
 • Gear ratios
    Ring & pinion gear 14/22 i = 1.571
    Final drive 17/41 i = 2.412
    1st gear 13/41 i = 3.154
    2nd gear 17/40 i = 2.353
    3rd gear 19/36 i = 1.895
    4th gear 19/29 i = 1.526
    5th gear 24/30 i = 1.250
    6th gear 34/35 i = 1.029
 • Internal pressure-oil lubrication with
 • active oil cooling
 • Limited slip differential
 • Triple-disc sintered metal race clutch
 • Pneumatic paddle shift system

Bodywork
 • Lightweight bodywork with smart aluminum-steel composite construction
 • Welded-in roll cage, in compliance with FIA
 • Homologation Regulations for safety cages
 • Front bonnet with two air inlets for cockpit ventilation and quick fasteners
 • Removable roof section
 • Rescue bar analogue DTM system
 • Modified and widened 911 GT3 fenders
 • Modified rear wheel arches
 • Modified and widened 911 GT3 frontend with spoiler lip
 • Modified 911 GT3 rear-end with integrated rain light, in compliance with FIA Homologation Regulations

Lightweight exterior
 • CRP doors with sport-design rearview mirrors
 • CRP rear engine lid with quick fasteners
 • CRP rear wing; adjustable PC windows and rear side windows with ventilation openings
 • PC rear window
 • Underbody tray with air routing for brake- and driveshaft cooling in the rear
 • Modified 911 cockpit:
 • Magnesium sub-frame in light weight design
 • Ergonomic driver-oriented center console
 • Switch mask with fluorescent lettering
 • Steering wheel with quick release coupling, control panel and shift paddles
 • Race bucket seat with longitudinal adjustment:
 • Homologated to latest FIA requirements
 • Individual padding system
 • Six-point seat belt
 • 100 liter fuel cell (FT3 safety fuel cell)
 • Built-in air jack system (three legs)

Suspension

Front axle
 • McPherson suspension strut, adjustable in height, wheel camber and track
 • Forged struts:
 • Optimized stiffness
 • Double shear tie rod connection
 • Heavy-duty spherical bearings
 • Wheel hubs with center lock
 • Racing shock absorbers, non-adjustable
 • Forged supporting mounts
 • Double-blade-type anti-roll bar
 •  Electrohydraulic power steering

Rear axle
 • Multilink rear suspension, adjustable in height, wheel camber and track
 • Forged struts:
 • Optimized stiffness
 • Double shear tie rod connection
 • Heavy-duty spherical bearings
 • Wheel hubs with center lock
 • Racing shock absorbers, non-adjustable
 • Forged supporting mounts
 • Double-blade-type anti-roll bar

Brake System
 • Two independent brake circuits for front and rear axle,
 • adjustable by the driver via brake balance system.

Front axle
 • Aluminum six-piston racing calipers in mono-bloc design
 • Multi-piece steel brake discs; internally vented and slotted, 380 mm diameter
 • Racing brake pads
 • Optimized ventilation routing
 • Rear axle:
 • Aluminum four-piston racing calipers in mono-bloc design
 • Multi-piece steel brake discs; internally vented and slotted, 380 mm diameter
 • Racing brake pads
 • Optimized ventilation routing

Rims/Tires

Front axle
 • Single-piece light-alloy rims according to Porsche specification and design with center lock, 10.5J x 18 ET 28
 • Michelin transportation tires; tire size: 27/65-18
 • Rear axle:
 • Single-piece light-alloy rims according to Porsche specification and design with center lock, 12J x 18ET 53
 • Michelin transportation tires; tire size: 31/71-18

Electrics
 • COSWORTH color display ICD
 • COWSORTH electrical system control unit IPS32
 • Electronic throttle system
 • Fire extinguishing system (extinguishing agent: gas)
 • Battery 12 V, 70 Ah (AGM), leak-proof, placed in the co-driver foot well
 • Alternator 150 A
 • Fan in light weight design
 • Wiper with direct drive
 • Lighting system:
 • Bi-xenon-headlight
 • LED daytime running light
 • LED rear lighting system and rain light

Weight/Dimensions
 • Total weight: approx. 1,200 kg
 • Total length: 4,547 mm
 • Total width: 1,851 mm
 • Total height: 1,280 mm
 • Wheel base: 2,458 mm

Colors
 • Water-based paint
 • Exterior: white C9A
 • Interior: white filler-coat, no clear-coat finish

Cayman GT4 Clubsport

Cayman GT4 Clubsport

Cayman GT4 Clubsport

Concept
• Single-seat, production-based rac
• Based on: Porsche Cayman GT4 (9

Engine
• Aluminum six-cylinder rear-mounted boxer engine, rigid mounting
• 3,800 cc; stroke 76.4 mm; bore 102.7 mm
• Max. power: 283 kW (385 hp) at 7,400 rpm
• Max. rpm: 7,800 rpm
• Max. torque: 420 Nm at 4,750 – 6,000 rpm
• Compression ratio: 12.5 : 1
• Water cooling with thermal management for engine and gearbox
• Four valves per cylinder, adjustable camshaft phasing and variable valve timing VarioCam Plus
• Sequential multi-point fuel injection
• Fuel quality: minimum 98 octane, unleaded
• Dry-sump lubrication
• Electronic engine management (Continental SDI 9)
• 100-cell metal catalytic converter complying with DMSB specifications
• Rear silencer with central tailpipes
• Variable intake system with adjustable resonance butterflies
• Twin pipe sport exhaust system featuring two central tailpipes

Transmission
• Rear wheel drive
• Rigidly mounted six-speed PDK-gearbox (DCT, dual clutch transmission)
• Limited slip differential optimized for racing
• Dual mass flywheel

Bodywork
• Lightweight bodywork with intelligent aluminum-steel composite construction
• Fully integrated roll-cage complying with FIA Homologation Regulations for safety cages
• Front bonnet with quick release fasteners
• Rear deck with quick release fasteners
• Fixed carbon rear wing with side plates, black aluminum wing support with integrated Gurney flap
• Modified Cayman GT4 cockpit:
• Porsche motorsport steering wheel, Alcantara covered, integrated shift paddles
• Motorsport center console with typical Porsche switch layout
• Crash protected, lightweight battery and optimized ECU positon
• OMP race bucket seat with longitudinal adjustment (in accordance with FIA requirements)
• Six-point safety harness
• FIA certified towing loops at front and rear
• Portable fire extinguisher
• Pre-installed mounting points for on-board three-piston air jack
• Preparation for central fire extinguisher system
• Optional: 70 liter FT3 safety fuel cell with ‘Fuel Cut Off’ safety valve according to FIA regulations
• Optional: 100 liter FT3 safety fuel cell with ‘Fuel Cut Off’ safety valve according to FIA regulations
• Optional: Recaro race bucket seat with longitudinal adjustment and individual padding system. (in accordance with FIA standard 8862/2009 - latest FIA requirements)

Suspension

Front axle
• McPherson suspension strut
• Forged suspension links:
• Optimized stiffness
• Double shear mounting
• High-performance spherical bearings
• 5 bolt wheel hubs
• Motorsport shock absorbers, adjustable ride height (rebound/compression characteristics fixed)
• Reinforced track rods
• Electrohydraulic power steering with variable steering ratio and steering impulse
• Modified anti-roll bar

Rear axle
• McPherson suspension strut
• Forged suspension links:
• Optimized stiffness
• Double shear mounting
• High-performance spherical bearings
• 5 bolt wheel hubs
• Motorsport shock absorbers, adjustable ride height (rebound/compression characteristics fixed)

Brake System

Front axle
• Aluminum, mono-bloc six-piston racing calipers with ‘Anti knock off’ piston springs
• Ventilated and grooved 380 mm brake discs mounted on aluminum disc bells
• Motorsport brake pads
• Optimized brake cooling duct layout

Rear axle
• Aluminum, mono-bloc four-piston racing calipers with ‘Anti knock off’ piston springs
• Ventilated and grooved 380 mm brake discs mounted on aluminum disc bells
• Motorsport brake pads
• Optimized brake cooling duct layout

Rims/Tires

Front axle
• One piece forged alloy rims, 9J x 18, offset 28 mm, 5 bolt mounting
• Michelin transportation tires; dimensions: 25/64-18

Rear axle
• One piece forged alloy rims, 10.5J x 18, offset 53, 5 bolt mounting
• Michelin transportation tires; dimensions: 27/68-18

Electrics
• Porsche GT4 instrument cluster including typical motorsport display elements
• Porsche Track Precision Race App with provision for a lap trigger
• Electronic throttle system
• Battery 12 V, 70 Ah (AGM), leak-proof, mounted in passenger footwell
• Electric windows
• Emergency switch in cockpit and exterior emergency switch at lower left of windscreen frame
• Lighting system:
• Main headlights with H7 technology
• LED rear lighting system
• Electronic dynamic stability system PSM (Porsche Stability Management) with ABS,traction control and electronic stability control can be deactivated.
• Tire pressure monitoring system (TPMS)
• Optional: Air conditioning

Weight/Dimensions
• Total weight: approx. 1.300 kg
• Total length: 4.438 mm
• Total width: 1.817 mm
• Total height: 1.266 mm
• Aerodaynamic drag coefficient: cw = 0,32
• Wheelbase: 2.484 mm

Colors
• Water-based paint
• Exterior: white C9A
• Interior: white filler-coat, without lacquer


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