Porsche 911 GT3 RS 2004 Manual
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Porsche 911 GT3 RS 2004 Manual

Porsche 911 GT3 RS 2004 Manual

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Engine
911
911 GT3 RS
General
The engine of the 911 GT3 is used in the 911 GT3 RS in model year 2004.
The geometry of the inlet ports in the cylinder head have been optimised.
This resulted in a new engine type, which for this vehicle is designated M79/80.
Additional information is available in the existing Technical Service Information
brochures and in the Corporate Porsche Academy.
1.5 / 2004

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  • Page 1 The geometry of the inlet ports in the cylinder head have been optimised. This resulted in a new engine type, which for this vehicle is designated M79/80. Additional information is available in the existing Technical Service Information brochures and in the Corporate Porsche Academy. 1.5 / 2004...
  • Page 2 ME 7.8 Motronic system engine speed band. The engine has spontaneous power dev elopment with immense liv eliness and a typical Porsche sound. It has excellent emission and consumption High-speed concept perf ormance and complies with all exhaust and noise emission requirements world- wide.
  • Page 3 911 GT3 Development aims of the 911 GT3 • Increasing the perf ormance potential of the new 6-cy linder, 3.6 litre Boxer engine • Well-rounded torque curve over the entire engine speed spectrum • Maximum speed concept with reduced moving masses of the v alve gear •...
  • Page 4 911 Carrera (996) as of model y ear 2002 or the Boxster as of model y ear 2003. Additionally , on USA versions: As of software version 16 of the Porsche • ORVR system with tank leak-tightness test System Tester 2 the f ollowing functions are •...
  • Page 5 911 GT3 Motronic control unit Data records To program the Motronic control unit, the f ollowing data records are available: -– f or USA models (Low Emission Vehicle) -– f or Europe (Euro 4) and RoW v ehicles with similar emission limit values -–...
  • Page 6 911 GT3 High-speed concept The maximum engine speed has been raised to 8200 rpm to increase the gear- dependent perf ormance in the lower and medium speed range (1st to 4th gear). In 5th and 6th gear it is 8000 rpm. Improv ed v ehicle acceleration was achieved through the respectiv e transmission ratios.
  • Page 7 911 GT3 Fuel supply The 911 GT3 has a f uel system with a return line from the pressure regulator on the engine to the fuel tank. A sucking jet pump f eeds the fuel to the main pump. The f uel pump (in the tank) f eeds the fuel along the inlet line and through the f uel f ilter Please ref er to the technical manual to the injection valv es.
  • Page 8 911 GT3 ORVR system USA models have a system whereby the fuel vapours occurring during ref uelling of the v ehicle are directed into the activated charcoal filter. ORVR stands for: On-board Ref ueling Vapor Recovery System, i.e. an (On-board) sy stem, fitted into the vehicle, whereby during refuelling (Ref ueling) the f uel v apours (Vapor) are recovered (Recovery ).
  • Page 9 911 GT3 Function When ref uelling the v ehicle, a reed contact (9), fitted in the f uel f iller neck below the sealing f lap, which is opened by the filling nozzle, is switched. This applies positiv e potential to the ORVR v alve (6) and to the fresh-air v alve (11). As these v alves are permanently connected to earth, they open.
  • Page 10 911 GT3 2839 Hall sensor and camshaft rotor A modif ied rotor is f itted to the intake camshafts of both cylinder banks. Using the rotor position, the Hall sensor determines the current position of the inlet camshaft 4 times per camshaft rev olution and relays this v alue to the DME control unit. This determines precisely the position of the inlet camshafts.
  • Page 11 911 GT3 Intake system The air is drawn in v ia the air cleaner, it f lows through the connected hot f ilm air mass f low sensor and after the throttle control unit is distributed via a distribution pipe into the two air collection chambers. Straight suction pipes lead f rom the air collection chambers to the inlet ports.
  • Page 12 911 GT3 In ov errun condition, the gearshift speed is 4960 rpm and 2120 rpm. The gearshift speed is changed depending on the intake-air temperature to achiev e optimum induction. If intake air is hot, the gearshift speed is raised (by max. 10% at + 60 °C), if intake air is cold, it is reduced (by max.
  • Page 13 E-Throttle can be found in the Corporate dependent accelerator pedal trav el characteristic. This characteristic (the correlation Porsche Academy. between engine torque and accelerator pedal position) is determined entirely by the E-Throttle f unction and is independent of the engine’s operating state. The engine...
  • Page 14 911 GT3 Actuation of the v alve takes place via a pulse-width-modulated square-wav e signal. The v oltage is switched between 0 v olts and 12 v olts in 4ms cycles (250 Hz), while the proportion of switch-on and switch-off time is changed. A control current adjusts itself according to this proportion, which sets the piston position in the solenoid hy draulic valv e and thereby releases the different oil lines, facilitating a crankshaft angle adjustment range of 0°...
  • Page 15 911 GT3 Continual adjustment of inlet camshafts 1000 2000 3000 4000 5000 6000 7000 8000 n [1/min] 2_07_04 n - Engine speed in rpm NL - No load a - VarioCam adjustment angle VL - Full load (adv anced) in °crankshaft angle Full load When the throttle v alve is fully open, the continuous inlet camshaft control system Vario-Cam permanently sets the optimum closing time of the inlet valv es for every...
  • Page 16 911 GT3 Exhaust system The exhaust system is a 2-stream arrangement, i.e. the exhaust f low of the left and right cy linder banks is separate. Each exhaust system branch has an oxygen sensor fitted up- and downstream of the catalytic converter (double stereo oxygen sensor control).
  • Page 17 911 GT3 Theref ore, they are more compact, hav e a more active surf ace for pollutant conver- sion and reach the operating temperature for exhaust emission control sooner dur- ing the warm-up phase. Additionally, heating of the catalytic conv erters after a cold start is improved through secondary air injection.
  • Page 18 911 GT3 Oxygen sensing The 911 GT3 has stereo oxygen sensing with 2 oxygen sensors per cylinder bank. Each cylinder bank has one oxygen sensor upstream and one oxygen sensor downstream of the catalytic conv erter. The Motronic uses the signal of the oxy gen sensor upstream of the catalytic conv erter to control the f uel/air mixture.
  • Page 19 911 GT3 The sensor element of the oxygen sensor LSF is made up of ceramic sheets and has the f orm of a rectangular waf er with rectangular cross section. The individual f unction lay ers (electrodes, protective layers, etc.), are produced with screen print- ing technique.

  • Page 20: Transmission Control

    Transmission control 911 GT3 RS Contents General General The G96/90 type transmission along with the complete clutch is taken unchanged Flywheel from the GT3 model of 2004. 1360 Flywheel To reduce the masses of the crankgear to a minimum, a single-mass flywheel is used on the 911 GT3 RS.

  • Page 21: Table Of Contents

    Chassis and suspension 911 GT3 RS Contents General General The chassis and suspension, including the brake system of the 911 GT3 RS, has Front axle been adopted in its basic components from the 911 GT3. In order to accommodate the higher power ratios and driving dynamics, modification of the front and rear Wheel carrier axle wheel carriers and further tuning on the springs, shock absorbers and stabi- Spring strut...

  • Page 22: Wheel Carrier

    4085 Spring strut The spring strut consists of a single-tube gas-filled shock absorber and a spring adapted to the driving dynamics (45 N/mm). The lower, height- adjustable spring seats allow raising or lowering of the ride height as well as fine adjustment of the wheel loads. Rear axle 4252 Wheel carrier...

  • Page 23: Lower Lateral Control Arm

    4211 Lower lateral control arm The lower lateral control arms, as on the front axle, are in two parts for opti- mum camber adjustment. Basic camber adjustment is carried out by inserting shim plates. Fine adjustment is still carried out via the camber eccentric. 4_26_04 The casting is the same for the front and rear axle.

  • Page 24: Rear Axle Side Section, Track And Camber Eccentric

    4238 Rear axle side section, track and camber eccentric Because the stroke of the track and camber eccentric have been increased, the side sections in this area have been modified accordingly. The support of the eccentric is only at the front. To prevent excessive wear at the sup- port points, the screw fastenings should be well loosened before adjusting.
  • Page 25 The front hood is only painted on the outside and is manufactured from the mat- erial CFRP (carbon fiber reinforced plastic). The inside is finished in carbon look. The Porsche emblem is adhered on in film form. The second gas-filled spring is discontinued.
  • Page 26 Body equipment, exterior 911 GT3 RS Contents General General The basis for the body equipment, exterior of the 911 GT3 RS is the 911 GT3, Front trim model year 2004. The vehicle has no side airbags. Rear window Rearview mirror Colors Seat belts The basic color of the 911 GT3 RS is carrara white.
  • Page 27 Body equipment, interior 911 GT3 RS Contents General General Door panel The body equipment, interior of the 911 GT3 RS equates to that of the 911 GT3 Clubsport, model year 2004. The steering wheel rim is in Alcantara sewn with red or blue thread (depending on selected color combination).
  • Page 28 The 911 GT3 RS in model year 2004 is fitted with the familiar air-blending heating system with four-speed blower as standard. Air conditioning is not available for the 911 GT3 RS. Additional information is available in the existing Technical Service Information brochures and in the Corporate Porsche Academy. 8.5 / 2004...
  • Page 29 Detailed information on this is available in the Serv ice Training Brochure “Intro- Anti-theft alarm system duction CAN Bus/MOST Bus”. Information on this is also available (summarised) at the online Porsche Academy under “Technology Basics - Networking” (Technik Headlamps/Illumination Grundlagen - Vernetzung).

  • Page 30: Emergency Switch (Only Club Sport Version)

    911 GT3 Actuating one of the two emergency switches will interrupt the main power circuit through a main relay. The main relay is located in the area of the plenum chamber on the right side beside the battery and is actuated via the consumer shut-off of the alarm system and v ia the master switch outside and inside.
  • Page 31 911 GT3 Emergency switch, internal Actuating emergency switch • Fold transparent cover of emergency switch f orwards. • Press red emergency switch. Resetting emergency switch • Press red emergency switch again and close cover. BW1 221 5510/5547 Electrical luggage and engine compartment lid release The luggage compartment lid (f ront) and engine compartment lid (rear) have an electrical release.
  • Page 32 911 GT3 The two lids can only be opened if the appropriate pull-switch is actuated, the v ehicle’s alarm system (if f itted) is not armed and the vehicle speed is lower than 5 km/h (3 mph). The luggage compartment lid can only be opened by means of the radio remote control if the ignition key has been remov ed.

  • Page 33: External Power Source

    911 GT3 External power source If the battery is flat, the release motors for the two lids can be operated by applying an external power supply via a battery jumper cable. There is a colour-coded (red) emergency power contact in the fuse box in the driver’s side f ootwell.

  • Page 34: Headlamps/Illumination

    911 GT3 9415 Headlamps/Illumination As standard the 911 GT3 is equipped with the lighting of the 911 Carrera incl. head- lamps (standard halogen main headlamps with projection technology ), rear lights The range and road surf ace illumination and turn indicators. are adapted to the high perf ormance of the 911 GT3.
  • Page 35 911 GT3 The “bi-xenon” system offers the f ollowing advantages in high-beam mode: • Xenon high-beam headlamps • Lowering the beam aperture prov ides a wide and very brightly lit illumination zone ev en at long range (particularly important on winding roads) •...
  • Page 36 911 GT3 High beam In comparison: Top: High beam Litronic headlamps Bottom: High beam bi-xenon headlamps 9_02_04 9.8 / 2004...

  • Page 37: Interior Light/Orientation Light

    911 GT3 9622 Interior light/Orientation light The 911 GT3 is also provided with the prev iously introduced orientation lighting. The LED in the passenger compartment light illuminates the cockpit and centre console area. It is also used as an orientation light when night driv ing. The subdued lighting creates a better sense of space and also assists in locating the switches.

  • Page 38: Instrument Cluster

    911 GT3 9025 Instrument cluster The instrumentation is largely similar to that of the 911 Carrera. The higher shut-off speed accounts for the extended red sector of the rev counter starting at 8200 rpm. To differentiate, a “GT3” logo is imprinted on the rev counter face. The f amiliar arrangement of the on-board computer standard on the 911 Carrera is also new.

  • Page 39: Multifunction Display/On-Board Computer And Radio (Optional)

    Radio Porsche CDR 23 (optional at no extra charge) The f amiliar CD Radio Porsche CDR 23 with double tuner (world tuner adjustable to all worldwide f requency ranges) and CD driv e is offered as an optional extra for the 911 GT3.
  • Page 40 911 GT3 A f ront centre console can also be ordered optionally in additional to the radio. In this case, CD storage compartments f or the centre console are included in package. 9_08_03 1 - Volume control (on/off switch) 2 - Eject button f or CD 3 - Traff ic program button 4 - Tone button 5 - Button for selecting sub menus...
  • Page 41 911 GT3 Functional overview of the new CDR 23 radio General features CDR 23 Rotary v olume control (left) Multif unction rotary reset control Display of station name f or RDS stations Multi station button in FM and AM Automatic search in 2 directions SCAN search TP search Scroll through receivable stations (RDS EU, Best FM)
  • Page 42 911 GT3 Traffic Program Ev aluation via RDS and RBDS Announcement recognition via TA Change to traffic program possible without music program (TP-MUTE) Announcement display in LCD (TP-INFO) TP (shown in display) Background traffic program with CD, MW and VHF stations without traffic news 6 disk CD changer (CDC-4) connectable CD and CD changer selection via CD button Disc selection v ia station buttons...

  • Page 43: Theft Protection

    9155 Telephone pre-installation for mobile cellular phone A telephone pre-installation from other Porsche models can also be ordered in conjunction with the CDR 23 radio and the f ront centre console, which, if neces- sary can be supplemented with a VDA compatible mobile phone upgrade set.
  • Page 44 911 GT3 The package includes the basic electrical cabling, a handsf ree microphone in the instrument cluster area, the telephone antenna and a securing dev ice on the centre console in the passenger area and a VDA interface below the passenger seat. 1 - Mobile cellular phone holder 2 - Telephone antenna 3 - Handsf ree microphone...

  • Page 45: Antenna Systems

    911 GT3 Antenna systems Depending on specification, the 911 GT3 model y ear 2004 is equipped with the f ollowing antenna systems: Antenna Function/Assignment Fitting location Antenna wire with VHF reception f or Windshield signal amplifier CDR 23 radio Telephone antenna GSM 900/GSM 1800 Fitted under the cowl cover AMPS/PCN 1900...

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