Concept: Single-seated, near standard race vehicle Based on the 911 GT3 RS II. Generation

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1 Part C Special Technical Requirements C.1 GENERAL C.1.1 Technically identical vehicles with the designation Porsche 911 GT3 Cup (Type 997), built by Porsche AG in a small production run on the basis of the Porsche 911 GT3 RS, shall be used for the China GT Vehicles of Model Year 2013/2012/2011/2010 are eligible including the required modifications in accordance to Part D - Attachments shall be authorised. The vehicles must comply with the requirements of these 2018 Technical Regulations. Technical inspection of the vehicles is undertaken by the Technical Scrutineer. The following special technical requirements apply in addition to the general technical requirement in Part B - Technical Regulations (Items B.1 - B.12): Everything that is not expressly permitted in this Regulation is prohibited. Allowed changes must not result in any infringements of the rules or any changes that are not permitted. C.1.2 General vehicle description Porsche 911 GT3 Cup (Type 997), Model Year 2013 as well as Model Year 2010, 2011 and 2012 (including the required modifications in accordance to Part D - Attachments) Concept: Single-seated, near standard race vehicle Based on the 911 GT3 RS II. Generation Engine: Normally aspirated engine Water cooled flat six-cylinder boxer engine with 4 valves per cylinder 3,797 cc; stroke 76.4 mm; bore mm diameter Max. power: 331 kw (450 hp) at 7,500 rpm Max. rpm: 8,500 rpm Required fuel quality: 98 octane ROZ, unleaded Dry-sump lubrication Sequential multi-point fuel injection Electronic engine management MS3.1 by Bosch Four-stage resonance intake manifold Race exhaust system with regulated race catalytic converter Twin-branched muffler with centered exhaust pipes Standard specifications of the car without front mufflers Power Train: Six-speed sequential dog-type gearbox (G97/63) with active oil cooling and pressure-oil lubrication Gear Ratios: Rack & pinion gear 8/32 i = st gear 12/38 i = nd gear 15/32 i = rd gear 18/31 i = th gear 20/28 i = th gear 23/26 i = th gear 29/27 i = Limited slip differential 37% drive / 52% overrun Single-mass flywheel Race clutch (5½ triple-disc sintered-metal clutch) Hydraulic clutch centre-release mechanism Oil-water heat exchanger 1

2 Bodywork: Weight optimised, widened body shell based on 911 GT3 RS II. Generation Enlarged rear wheelhouses for tyre sizes of 690 mm diameter Aerodynamically optimised front splitter Optimised ventilation for drivers through air inlet in front bonnet CfC doors with window frame and plastic rear-view mirrors CfC rear lid with integrated rain light CfC rear wing adjustable Synthetic rear centre compartment Modified, synthetic rear body parts Polycarbonate rear window, rear side windows and door windows Built-in air jack system with safety pressure valve Welded-in roll cage according to DMSB regulations Race bucket seat (driver side only) with fire retardant upholstery Six-point seat belt, optimised for use with HANS Multifunctional steering wheel with quick-release coupling Electric Fire extinguishing system with electronical release device 100 litre fuel tank (FT3 safety fuel cell), returnless fuel with five bar fuel-pressure regulator Suspension - Front axle: McPherson strut-type axle, height-adjustable Front axle wheel suspension with twin-clamp system Double coil springs with race setup (main spring and helper spring) Sachs gas pressure shock absorbers Front axle control arm with six-point-suspension Two-piece lower control arms for camber adjustment Longitudinal control arm Double-blade-type anti-roll bar, 7 setting options per side Forged supporting mounts with Unibal Reinforced, continuously variable rear axle track rod Power steering with electro-hydraulic pressure feed Modified steering-column assembly (adjustable in height and length) Suspension - Rear axle: Multilink rear suspension with solidly mounted subframe Suspension struts height-adjustable Modified wheel suspension Double coil springs with race setup (main spring and helper spring) Sachs gas pressure shock absorbers Modified axle side parts Two-piece lower control arms for camber adjustment Unibal - suspended control arm (top) Longitudinal control arm Double-blade-type anti-roll bar, 7 setting options per side Reinforced, continuously variable rear axle track rod Brake System: Two independent brake circuits, adjustable via brake balance system and 2 master brake cylinders Front axle: Aluminium six-piston callipers in red Steel Brake discs (compound moulding) internally ventilated (diameter = 380 mm) Special race brake pads without wear indicator (P50) Optimised ventilation routing Rear axle: Aluminium four-piston callipers in red 2

3 Steel Brake discs (compound molding), internally ventilated (diameter = 355 mm) Special race brake pads without wear indicator (P50) Optimised drive shaft ventilation Rims / Tyres - Front axle: One-piece APP centre-lock aluminium rims 9,5J x 18 ET 37 Michelin slick tyres, size 25/64-18 Michelin rain tyres, size 24/64-18 P2G Rims / Tyres - Rear axle: One-piece APP centre-lock aluminium rims 12J x 18 ET 30 Michelin slick tyres, size 30/68-18 Michelin rain tyres, size 30/68-18 P2G Electrics: Motec Dashboard ADL2 with integrated data recording, 1 MB main memory Battery: 12 V, 50 Ah Generator 90 A Error detection H7 main headlight and daytime running light Rear lights in LED-technology Options: Electronical oil-level display (on request) Motec upgrade to 4 MB main memory, brake-pressure sensors and steering-angle sensor (to be ordered via Motec) Vehicle Weight: Approx. 1,170 kg (steel brake disc and without front muffler) Colours: Water-based paint Exterior: carrara white B9A Interior: white filler-coat, no clear-coat finish C.1.3 Conformity with Regulations The vehicles will be delivered in their basic version being in accordance with the 2010/2011 Porsche Manufacturer s Regulations. Each customer is responsible for his vehicle to fully comply with the relevant regulations. All Previously published technical data and prices are no longer valid. Vehicle cannot be registered for public road use. 3

4 C.2 ENGINE C.2.1 C.2.2 C.2.3 C.2.4 C.2.5 The engines are sealed at Porsche AG prior to delivery. A vehicle with an unsealed engine or with a damaged seal is not permitted to participate in the China GTunder any circumstances. Any work on the engine that requires the seal to be opened must be undertaken at Porsche AG. An engine change has to be approved in writing by the Organiser prior to the change. Engines can be called in at the instructions of the Race Director and the Stewards of the Meeting and inspected at the entrants expense. Before the engines are delivered and refitted, a new seal shall be affixed by a Technical Scrutineer at Porsche AG. In the case of a non-scheduled situation, the situation has to be reported to Porsche AG. Nonscheduled situations are: Exceptional cylinder pressure loss Engine fluid leaks Performance defects Engine was over revved Overheating of the engine through damage to the cooler, damage ducting, etc. Servicing of the engine during the season to a high running time Damages through an accident C.2.6 The original screws for fixation of the exhaust system may be replaced by steel bolts and hexagon nuts. Therefore it is only allowed to use the following parts: 4 pieces of steel bolts M10 x spare parts no.: pieces of hexagon nuts M10 spare parts no.:

5 The implementation of this modification has to comply with the photo below. C.2.7 The mechanical intermediate throttle application system (blipper) developed by Porsche AG is released for use in the China GT. Other systems will not be admitted. Required parts for cars MY 2010: 1 x Intermediate throttle application (blipper) Part number: x Throttle cable Part number: C 1 x Gear shift lug Part number: Required parts for cars MY 2011: 1 x Intermediate throttle application (blipper) Part number: x Throttle cable Part number: C The data set has to be adapted through Porsche AG. C.3 POWER TRANSMISSION (GEARBOX/DIFFERENTIATE LOCK) C.3.1 The ramp angle of the differential lock is 32 ± 17 (pull) and 45 ± 17 (push). The ramp angles are determined from the axis of rotation (Attachment 5). This results in a locking ratio of 37/52 % in conjunction with the locking plates. The minimum locking torque of the differential lock is achieved when the torque, as measured at the wheel nut with blocked meshing gear, stands at 60 Nm. At no point during the racing event may the torque fall below this minimum level. C.4 BRAKES PADS 5

6 C.4.1 The P50 brake pad, which is specifically stipulated by Porsche AG for the series of races, is compulsory for races. C.5 STEERING (STEERING WHEEL / HUB EXTENSION) C.5.1 C.5.2 C.5.3 C.5.4 The position of the steering wheel on the front axle control arm is determined by distance washers of 3 mm. Only the standard installed OMP steering wheel is permitted. Differing OMP hub extensions may be used. The standard steering column adjustment may be used. The adjustment facility in length and height which is available as standard may be used. Any alteration must be permitted by the China GT or Porsche Motorsport Asia Pacific (PMAP) Technical Scrutineer. C.6 SUSPENSION C.6.1 Suspension adjustments may only be changed within the limits of the existing adjustment range. All original parts must be retained. The maximum permissible camber shim plates fitted to the front and rear axle control arms are: Front axle : Rear axle : 13 mm 13 mm C.6.2 The trailing arm axle bearing points of the front and back wishbones must be left in the position in which they are delivered (shortest wheelbase) position (middle position is not allowed). Additionally, the screw positions of the trailing arms at the wishbone bearing points may not be modified (see Attachment 6). The wheel base on the left driver s side and the right vehicle side must be 2353 mm + / - 5 mm. The measuring points are the centered boreholes at the respective central screw. C.6.3 The height of the bearing point toe rod - wheel carrier at the front and rear axle is defined by different shims (refer to Attachment 7). Part numbers: distance washer 2 mm A distance washer 4 mm B C.7 ANTI-ROLL BARS C.7.1 The anti-roll bars are only allowed to be unhooked provided that no parts are removed in the process. Only the setting options for which the technical specifications have been provided may be used. 6

7 C.8 SHOCK ABSORBERS / SPRINGS C.8.1 Only the factory-installed ZF Sachs shock absorbers and H&R chassis springs in their original conditions may be used. Part numbers: Shock absorber Front axle: Rear axle: Main spring Front axle 100/260: Rear axle 130/260: Helper spring Front axle 75/60/43: Rear axle 80/60/60: C.9 TYRES C.9.1 Only the version of Michelin tyres approved for the series races may be used for the duration of the competition and the official tests. The tyres for the relevant competition are to be obtained on site from Michelin. There are no specifications for the tyre pressure, but Michelin's recommendations and instructions should be observed. Only atmospheric air or nitrogen, and dry atmospheric air from Michelin may be used to inflate the tyres. C.9.2 Slick tyre allocation for each race event is a maximum of 4 sets: 8 front and 8 rear slick tyres. One set of slick tyres (4 tyres) nominated at the previous Event may be during free practice at the race event. C.9.3 All tyres must be fitted with valve caps, which must be in place before the cars leave the pit lane and at all times when out on the circuit. C.9.4 There is no limit on the number of wet tyres that may be allocated to a car and used. All wet tyres should be marked by the tyre Scrutineer before the first practice. C.9.5 Practice Competitors are allowed to use 4 slick tyres (1 set) nominated at the previous Event for Practice. C.9.6 Tyre nomination Tyres are to be nominated no later than the start of first practice and marked prior to Practice. (8 fronts 8 rears) C.9.7 Qualifying and race Tyres may be mounted on rims at any time prior to qualifying. C.9.8 C.9.9 C.9.10 For the first round of the series it is permissible for entrants to purchase 1 additional set of new slicks for the practice sessions. The tyres must be marked by the tyre scrutineer The pre-heating and every type of chemical and mechanical treatment of tyres is forbidden and penalties may apply, if these regulations are not followed. Damaged tyres due to accidents, etc. can only be exchanged with the agreement of Michelin and the PMAP Scrutineer. C.9.11 If marked tyres are damaged during qualifying, these may be replaced by new ones with the agreement of the China GT Technical Delegate. These tyres must be marked. C.10 BODY AND DIMENSIONS 7

8 C.10.1 Overall car length and overhang The overall length of the car is 4460 mm +/- 10 mm. The front overhang is 1060 mm +/- 10 mm, measured from the middle of the wheel of the front axle to the leading edge of the vehicle (first point in the direction of the longitudinal axis). The rear overhang is 1045 mm +/- 10 mm, measured from the middle of the wheel of the rear axle to the rear edge of the vehicle (last point in the direction of the longitudinal axis). C.10.2 Body, Exterior (including windows) The delivery status of the body-work has to be preserved. This also means that it is not permissible to change the areas on the rear wheel housings machined in the factory. Front screen To protect the windscreen, so called tear off screens may be attached to the windscreen. The fitting has to be controlled and approved by Technical Scrutineering and must be removed on request of the Technical Scrutineer. The installation of a heated front screen is permissible under the condition that the original cabling (part no A) is used. Side and rear windows Only the genuine Porsche 911 GT3 Cup (Type 997) side and rear windows (in accordance with International Sporting Code of the FIA, Attachment J) in their original version are permissible. Part numbers Door window: L R Rear side window: L D R D Rear window: One version of front lip (closed) is approved for use on the Porsche 911 GT3 Cup (Type 997) MY 2012, MY 2011 and MY 2010: Part No C.10.3 Passenger Compartment / Cockpit Seat The seat can be adjusted by removing or adding upholstery. The original mounting (seat rail and bracket) must be retained. Changes require the consent of Porsche AG. An XL seat of OMP offered by Porsche may be used as an option. The maximum allowed upholstery, must not exceed 50 mm. Additional individual adjustments may be made by adding or removing seat cushion padding which must be fire retardant. The use of modified original seat brackets according to Attachment 8 in combination with original seat rails changed from left to right and vice versa, is optionally permitted. Any alteration must be permitted by the Technical Scrutineer. C.10.4 Ventilation in the passenger compartment Only the factory-fitted ventilation pipe NACA-intake on the front opening hood is permissible for the cabin ventilation. The ventilation of the front screen must not be affected. For additional ventilation of 8

9 the passenger compartment only the existing original ventilation openings in the rear back windows are permissible. The dimension of the NACA-intake may be changed by taping in order to regulate the air inlet into the passenger compartment. C.11 AERODYNAMICS AIDS (REAR WING) C.11.1 The original position of the adjustable rear wing section may be changed within the specified scope for adjustment range. C.12 ELECTRICAL EQUIPMENT C.12.1 Engine electronic control units Only the Motronic electronic control units coded sealed by the Series Organiser for the races may be used throughout the entire event. The Motronic electronic control unit including the complete wiring loom must be used without modifications. The Series Organiser or the Technical Scrutineer reserves the right to check or exchange the Motronic electronic control or record the engine characteristic data at any time during the event. The Series Organiser reserves the right to reprogramme the Motronic electronic control units and to reseal the plug-in connector for reading the electronic control units at the start of an event. It is thus ensured that the status of the program and data is identical for all participating vehicles. C.13 FUEL SYSTEM C.13.1 Series. Fuel in accordance with Article B.12. C.14 LUBRICATION SYSTEM C.14.1 Lubricants Engine: MOBIL 1 OW40 engine oil is recommended for entrants. All additives are prohibited. C.14.2 Gearbox (Transmission): Mobilube 1SHC 75W90 transmission oil is recommended for entrants. All additives are prohibited. There has to be a minimum of 3.3 litres transmission oil in the gearbox at all times. No work, modifications or similar processes are allowed to be done at the gearbox of a Porsche 911 GT3 Cup Car without prior approval of Porsche AG. C.15 DATA TRANSMISSION (TELEMETRY, RADIO TELEPHONY, DATA RECORDING) C.15.1 version. The use of telemetry and pit to car radio systems is forbidden. The standard equipment installed Motec dashboard/data logging system is the only system permitted. The Motec unit is matched to the chassis number and may not be changed. It is not permitted to change the Motec software The installation of the factory approved upgrade package of steering and brake sensors is allowed. Installation of such upgrades can only be done by the PMAP Official Technical Partner. It is the responsibility of the individual driver/team manager/engineer to download and analyse the data of the car. All data must be provided to the PMAP Official Technical Partner at the end of each event. 9

10 The PMAP Official Technical Partner, as well as the China GT Technical Scrutineer have the right to download and examine any or all of the data from any car at any time. The Series Organiser will provide the master lap trigger at each event. It is not permitted to use individual lap triggers. C.16 MISCELLANEOUS C.16.1 Seals The following seals are affixed before delivery: Engine: Motronic control unit: Valve cover, left (1x) Valve cover, right (1x) Oil pump left (1x) Timing gear cover right (1x) Connection for electronic control unit wiring loom (1x) If seals and marks are applied to the vehicle by the Technical Scrutineer or Porsche AG, these must not be damaged, changed or reproduced. If the seal on the engine electronic control unit is opened to allow welding work to be carried out, without being requested to do so the control unit must then be taken to the Technical Scrutineer for another inspection and to be resealed. Before the unit is resealed, the chronology of the work carried out must be submitted to the Technical Scrutineer. The removed seal has to be handed over to the Technical Scrutineer of PCCA. If it is seen that the seal is missing or damaged, it shall be assumed that work that is not permitted has been carried out and an appropriate penalty shall be imposed. Seals that have fallen off during the race or are damaged must be notified to the Technical Scrutineer in writing no later than one hour after closure of the Parc Fermé. C.16.2 Repairs subject to notification requirements Non-observance of the mandatory reporting regulations: If it is established during the technical inspection that seals have been opened without the acceptance of the Technical Scrutineer, the Technical Scrutineer reserves the right to refuse to pass the technical inspection. C.16.3 Cameras Only in-board or on-board cameras which have been approved by the Organising Committee are permitted to be used for legal sporting matters and TV purposes. All participants are obliged to fit and use TV cameras assigned by the Organising Committee in the respective car at the defined place according to the standards. Installation shall take place in the team's working awning by trained personnel of the Organising Committee staff. The picture rights belong exclusively to the Organising Committee C.16.4 LIGHTING EQUIPMENT 10

11 All lighting equipment must be in working order throughout the competition. The exterior lighting equipment must at least ensure the following functions: Headlights, direction indicators, stop lights, rain light and rear sidelights. For safety reasons, it is obligatory for headlights to produce a white beam. For races run in the daytime, cars must be equipped with yellow headlight covers. Only the use of clear protective film is permitted. All other coloured film is prohibited. C.17 RADIO SYSTEM These modifications must not create any aerodynamic downforce. Only the radio system made available by the Series organiser is approved for use. The driver has to be connected to the radio system during free practice, qualifying and the race and must be able to receive instructions from the Race Director or the Series organiser from the point of leaving the prestart area until the vehicle is parked in the Parc Fermé. The choice of hardware for radio reception from the Earplug port to the driver is optional, but must be checked and approved by the Technical Scrutineers. When mounting fixed speakers in the driver s helmet, the FIA helmet regulations must be strictly observed. In the case of any ambiguity, the driver/ entrant must produce proof that the components used are suitable for use in the vehicle (fire prevention, etc.). Modifications to the system are not permitted. Extra equipment is only allowed to be coupled with the radio system by the Series organiser. Malfunctions or damage to the system must be reported immediately to the technical scrutineers. The radio system is property of the team and it s the teams job to maintain it. The use of other radio-based information transmission in the vehicle (e. g. telemetry) is forbidden. Communication between driver and team is allowed during every session C.16.4 Comments Any permitted changes may only serve the intended purpose. Should problems occur with regard to interpretation of the rules, the Organising Committee shall decide according to the essential purpose of the rules. C.16.5 Special regulations for races lasting more than one hour Not applicable 11

12 Part D ATTACHMENTS D.1 Required technical modifications on cars Model Year 2010 to Model Year version 2011 for competition in China GT 2018 Season. D.1.1 Rear Underbody Gearbox The rear underbody pane gearbox must be replaced by the optimised version New part number: D.1.2 Cover Relay Carrier The relay carrier must be protected by the relay cover, consisting of the parts listed below. New part numbers: A2 D.1.3 Gear Ratio The gear ratio of the 4th gear (20:28) and the 5th gear (23:26) must be changed as follows. New part numbers: 4th gear J 5th gear N D.1.4 Modified Rear Wiring Loom The third brake light is to be converted to the fog light as described in the technical information 5/2010 for 911 GT3 Cup. D.1.5 Fuel Distribution System The fuel distribution system from the engine to the defueling coupling has to be changed to the version New part numbers: Fuel distribution system C Housing for defueling coupling D.1.6 Wheel Hub Rear Axle The wheel hubs on the rear axle have to be replaced by the new developed wheel hubs. New part numbers: D.1.7 Plate for Underbody An underbody plate to protect the 90 litre fuel tank has to be mounted. A detailed retrofit description will be provided separately by the Series Organiser. New part numbers: H D.1.8 Rims APP Since the race season 2012 only one piece APP rims are allowed for Series registered cars. New part numbers: Rim front axle Rim rear axle B D.2 Recommended technical modification on cars Model Year/version 2011 for competition in China GT 2018 Season. D.2.1 FT3 Fuel It is not obligatory to upgrade cars of MY 2010 and 2011 with the FT3 fuel tank for the 2012 season. But taking into consideration that the new 911 GT3 Cup MY 2012 features a safety fuel tank, Porsche Motorsport highly recommends to upgrade the vehicles MY 2010 and An upgrade package is offered by Porsche AG. 12

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