power steering PORSCHE 911 GT2 2008 5.G Information Manual

· 16 ·· 17 ·
The 911 GT2 |The 911 GT2
being forced into the turbos,
there is less resistance from
the compressors and therefore
less back-pressure in the
exhaust, which means greater
engine performance.
The engine cover, featuring
the GT2 logo, is made from
lightweight glass-fibre reinforced
plastic (GRP). Twin titanium
tailpipes are elegantly incorpor-
ated within the rear apron design.
Warm air is vented from the braking power, with large air
intakes for improved air flow to
the central radiator and front
brakes. The integral air outlet
ahead of the front lid makes a
major contribution to front-enddownforce. The airstream from the
central radiator is channelled up
over the car, forcing the front end
downwards, thereby enhancing
balance and steering response.
The importance of air in the per-
formance of the 911 GT2 is also
apparent from the large intake
openings in the rear side panels
which supply the intercooler units.The most impressive view is also
the one that others will see most
of all: the rear. The fixed rear wing
with integral lip spoiler ensures
optimum stability at speed.
As the car accelerates and you’re
pressed into your seat, air is
forced through the intake openings
on the rear wing uprights and into
the engine turbocharging system.
This ‘ram air’ effect has a key role
to play in the exceptional efficiency
of the engine. Since air is already Power. Torque. Acceleration. All in
plentiful supply. Nothing else can
match that energy – except the
car’s design. A single glance is all
it takes to realise that fact.
The front end is aerodynamically
adapted for the high thermal
load of the engine and increased
Aesthetically. Aerodynamically. Resistance is futile.
Designing the 911 GT2.engine compartment via cooling
slits at the rear.
The combined effect of all these
aerodynamic modifications is a
drag coefficient of just 0.32 as
well as positive front and rear
downforce. Behind the wheel,
that means better grip, better
directional stability and excep-
tional handling characteristics.
Technically and visually, the
result is the same: a breathtaking
driving machine.

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· 23 · · 22 ·The 911 GT2 |
Drive
1. Oil scavenge pump
2. Oil-pressure pump (obscured)
3. Engine oil reservoir
(dry-sump lubrication)
4. Camshaft adjuster (VarioCam Plus)
5. Intake camshaft
6. Tappets with hydraulic valve
clearance adjustment
7. Valve springs
8. Valves
9. Nikasil-coated cylinder bore
10. Forged aluminium piston
11. Forged connecting rod
12. Crankshaft
13. Camshaft drive chain
14. Camshaft drive chain
tensioner with guide rail
15. Single-spark ignition coil
16. Spark plug
17. Exhaust-gas turbocharger with
Variable Turbine Geometry (VTG)
18. Main silencer (titanium)
19. Tailpipe (titanium)
20. Catalytic converter
21. Pressure pipe
22. Throttle valve (electronically
actuated)
23. Expansion intake manifold
24. Air filter
25. Fluid reservoir for power-steering
system

· 53 · · 52 ·
The 911 GT2 |Chassis
The steering system is extremely
direct and provides detailed
feedback from the road. This
high level of precision is very
advantageous in both racing and
normal road use. Thanks to the
precise front-axle kinematics andthe variable steering ratio, the
car responds to every movement
of the wheel.
An important feature of the
steering system is the variable
ratio gearing. Around the straight-ahead position, the ratio
is less direct, enabling smoother
manoeuvres, such as during
motorway driving. There is less
risk of excessive steering inter-
vention destabilising the car at
high speed. Naturally, the systemprovides excellent feedback as
well as the usual agility. As the
wheel is turned harder, the ratio
becomes more
direct and the
steering more responsive. This
variability is
particularly beneficial
in low-speed hairpin bends. The
energy-absorbing steering column
is a key safety feature since, in
the event of a front-end impact, it
enables a deformation path of
100 mm.The intermediate steering shaft is
made from aluminium, while the
protective tube and steering lock
housing are die-cast magnesium.
The standard three-spoke GT2
steering wheel features manual
height and reach adjustment.
Used in conjunction with the seat
adjustment options, it enables
every driver to find the ideal seat-
ing position.
Maximum precision, however powerful the performance.
Steering.

· 75 · · 74 ·
The 911 GT2 |Comfort
‘Welcome Home’ lighting.
This standard lighting function
provides comfort and safety at the
push of a button. The low-beam
headlights are automatically
illuminated when the car is locked
or unlocked using the key remote.
The lights remain illuminated for
a predefined period, lighting your
way to or from the car. This delay
is user-adjustable via Porsche
Communication Management
(PCM) on vehicles with the optional
Sport Chrono Package Plus.
ParkAssist.
This optional parking aid is auto-
matically enabled whenever you
select reverse gear. Move too
close to a stationary object and a
warning signal is emitted. Continue
to reverse and the tone increases
in frequency. The distance is
measured by ultrasonic sensors
which are neatly concealed in the
rear bumper.
Cruise control.
This convenient option has an
effective range of 30 – 240 km / h
(19 – 149 mph). The system is
operated using a switch in a
separate control stalk on the
steering column and can even
be used in first gear.
HomeLink®
(garage door opener).
This optional garage door opener
is freely programmable and inte-
grated within the cockpit. It offers
remote control for up to three
garage, gate, home lighting and/or
alarm systems and is compatiblewith almost all garage and exterior-
door systems.
Automatically dimming interior
and exterior mirrors.
An auto-dimming function is
available as an option for the
911 GT2 for interior and exterior
mirrors. The package also includes
an integrated rain sensor for the
front wiper system.
Luggage compartment.
The volume of the luggage
compartment in the 911 GT2 is
105 litres. The entire compartment
is lined with high-quality, scratch-
resistant materials. The bulkhead
panelling conceals the amplifier
of the optional BOSE
®Surround
Sound System and the DVD drive
for the optional navigation module.
The additional 205-litre rear load-
space inside the car is easily
accessible thanks to the folding
sport bucket seats.
Anti-theft protection.
The 911 GT2 has an engine
immobiliser with in-key transpon-
der as well as a powerful alarm
system featuring contact-sensitive
exterior protection and radar-
based interior surveillance as stan-
dard. The alarm system is
activated and deactivated by a
remote control function in the
ignition key.
Vehicle tracking system.
The 911 GT2 can also be equipped
with an optional factory-fitted
preparation enabling future
installation of a vehicle trackingsystem obtainable from Porsche
Tequipment. This system allows
a stolen vehicle to be traced
throughout most of Europe, and
requires the installation of a
special wiring loom and a high-
capacity battery.
Chrono Package Plus.
The optional Chrono Package Plus
combines a dash-mounted
analogue/digital timer with a range
of useful functions. Lap or journey
times can be viewed, stored and
analysed using the performance
display in PCM. The information
available includes time elapsed
and distance travelled on the cur-
rent lap, as well as the number
oflaps completed and their
respec-
tive times. You can also view the
current fastest lap and remaining
range till empty. Driving times can
be recorded for any stretch of
road, and benchmark times can be
defined. Other useful
features
include a personal
memory func-
tion, controlled via PCM, which
stores personal preferences for a
range of systems, including lights,
wipers, door locks and air condi-
tioning.
Luggage compartmentChrono timer

· 107 · · 106 ·
The 911 GT2 |Technical data
Technical data
Engine
Cylinders6
Displacement3,600 cm3
Max. power (DIN)390 kW (530 hp)
at rpm6,500
Max. torque680 Nm
at rpm2,200 – 4,500
Compression ratio9.0 : 1
Transmission
LayoutRear-wheel drive
Manual gearbox6-speed
Chassis
Front axleMcPherson-strut suspension
Rear axleLSA multi-link suspension
SteeringVariable steering ratio,
power-assisted (hydraulic)
Turning circle10.9 m
BrakesPorsche Ceramic Composite Brake (PCCB):
6-piston monobloc aluminium fixed calipers
at front, 4-piston monobloc aluminium fixed
calipers at rear, discs internally vented and
cross-drilled
Vehicle stability systemPSM
Anti-lock braking systemABS 8.0
WheelsFront: 8.5J x 19 ET 53
Rear: 12J x 19 ET 51
Ty r e sFront: 235/35 ZR 19 (sport tyres)
Rear: 325/30 ZR 19 (sport tyres)
Weights
Unladen weight (DIN)1,440 kg
Unladen weight (EC)*1,515 kg
Permissible gross weight1,750 kg
Performance
Top speed329 km / h (204 mph)
0 –100 km / h (0 – 62 mph)3.7 secs
0 –160 km / h (0 – 99 mph)7.4 secs
0 – 200 km / h (0 –124 mph)11.2 secs
Flexibility 80 –120 km / h (50 –75 mph) 4.1 secs
in 5th gear
Fuel consumption/emissions**
In accordance with 80 / 1268 /EC as valid at the time of going to print
Urban in l / 100 km (mpg)18.8 (15.0)
Extra urban in l / 100 km (mpg)8.9 (31.7)
Combined in l / 100 km (mpg)12.5 (22.6)
CO2emissions in g /km298
Dimensions /aerodynamics
Length4,469 mm
Width1,852 mm
Height1,285 mm
Wheelbase2,350 mm
Luggage compartment volume105 litres
Tank capacity (refill volume)90 litres
Drag coefficient0.32
** Weight is calculated in accordance with the relevant EC Directives and is valid for standard specification vehicles only.
Optional equipment means greater weight. The figure given includes 68 kg for the driver and 7 kg for luggage.
** The figures given refer to vehicles with standard specification in Germany. Data determined in the NEDC (New European Driving Cycle) in accor-
dance with the EU5 (80/1268/ EEC) measurement method in the version valid at time of going to print. The figures do not relate to an individual
vehicle, nor do they constitute part of the offer. They are intended solely as a means of comparing different types of vehicle. Further information
on the individual vehicles can be obtained from your Porsche Centre.