ABS PORSCHE 911 GT2 2008 5.G Information Manual

· 51 · · 50 ·The 911 GT2 |
Chassis
Some things never change,
including driver expectations of
a 911 GT2 : sports-oriented
performance, a direct response
and impressive power.
So Porsche Stability Management
(PSM) has been specially adaptedfor the 911 GT2. In addition to
ABS, the package includes two
automatic driver aids: stability
control (SC) and traction control
(TC).
Stability control (SC), which is
responsible for lateral dynamics,uses a range of sensors to moni-
tor the direction, speed, yaw
velocity (speed of rotation around
the vertical axis) and lateral
acceleration of the car. Using
this information, it is possible to
calculate the actual direction of
travel at any given moment. If thecar begins to oversteer or under-
steer, selective braking is applied
on individual wheels to restore con-
trol in critical driving scenarios.
Traction control (TC), with its
integrated ABD (automatic brake
differential), ASR (anti-slip regula-
tion) and EDC (engine drag-torque
control) functions, is responsible
for the longitudinal dynamics of the
car. Configured for sports-oriented
driving, traction control improveshandling under acceleration on
surfaces with inconsistent grip.
It also prevents the rear from
‘stepping out’ if a wheel loses
traction under full power. The
trigger threshold is relatively high,
which means it is rarely employed
in normal dry conditions.
A unique feature of PSM on
the 911 GT2 is that the control
interventions are delayed and
can be disabled completely in
two stages – for deliberate per-
formance handling.
Stage 1 disables the stability con-
trol (SC) via the ‘SC OFF’ switch in
the centre console. In ‘SC OFF’
mode, the control system does
not intervene if the car goes off-
course in the lateral direction,
which means the throttle can
be used to help steer the car.
Traction control (TC) is still active
in this mode.
Stage 2 disables the traction con-
trol as well via the separate
‘SC+TC OFF’ switch, giving the
driver full command of the vehi-
cle. Another unique feature is the fact that stability control
remains disabled in stages 1 and
2 even when the ABS is required
under braking. Specially develop-
ed for the 911 GT2, this revised
system strategy means the car
can also be enjoyed to maximum
effect on the racetrack.
The anti-lock braking system
(ABS 8.0) is integrated in PSM
and remains active, irrespective
of which settings have been
selected. ABS ensures a relatively
short braking distance and thus
enhanced safety.
It’s good to know who’s in control.
Porsche Stability Management (PSM).

· 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.

· 57 · · 56 ·
The 911 GT2 |Safety
The 911 GT2 excels in every
respect, be it power, driving
dynamics or safety. Every aspect
of its lighting concept, braking
system, rigid body and ergonomic
interior is fine-tuned to its
performance and to the individual
driver. For example, the sportbucket seats (see page 72) with
folding backrest offer racecar-like
lateral support.
Lighting system.
The standard lighting system
on the 911 GT2 uses the latest
Bi-Xenon gas-discharge technology
to achieve a light quality similar
to daylight. The compact main
headlights provide a broad and
uniform swathe of light that
increases active safety in all
road scenarios and in long,
blind corners in particular.
The brightness of the gas-discharge
system featured in the Bi-Xenon
headlights is approximately double
that of conventional halogen units.
A headlight cleaning system is also
included as standard.
The horizontal indicators in
the outer front air intakes use
high-performance light-emitting
diodes (LEDs) to increase
brightness and visibility.
The high-level third brake light
at the base of the rear screen
is equipped with rapid-response
LEDs.Two additional lights on the inside
of each door offer added conveni-
ence and safety. The kerb light
(white) provides useful illumination
when stepping out of the car.
The safety light (red) warns traffic
approaching from the rear when
the door is open.
Bi-Xenon headlightsHigh-level third brake light
A must: absolute confidence in the safety of your car.
Active safety.

· 61 · · 60 ·
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The 911 GT2 |Safety
Bodyshell structure.
The 911 GT2 complies with all
statutory requirements worldwide
in respect of frontal, side,
diagonal and rear impact
protection.
The reinforced bodyshell contains
a highly resilient passenger
cell offering exceptional crash
protection. At the front of the
car, the cell is protected by a
patented system of longitudinal
and transverse members (1). In
the event of an accident, energy
is absorbed by three separate
load paths, one above the other,
which disperse the force of
impact and minimise deformation
of the passenger cell.
Additional features include an
extremely rigid bulkhead cross-
member (2) made from super
high-strength steel. This element is
designed to absorb impact forces
from the longitudinal members and
thus protect both front footwells. In
a minor collision, a system of easily
replaceable impact absorbers
(3) prevents costly damage to the
underlying bodyshell structure.
The reinforced doors (4) make
an increased contribution to
the overall rigidity of the car. An
additional load path (5) is used tochannel energy through the upper
part of the shell and thus further
protect the passenger cell.
In 1985, we began using super
high-strength steel elements
inside each door to increase side
impact protection. On the 911 GT2,
this integral reinforcement
is made
from tough yet lightweight
aluminium. By increasing the
proportion of aluminium alloys
and high-strength steel, we’ve
also improved the power-to-weight
ratio. In all, approximately 20 %
of the 911 GT2 is made from
aluminium.Another important but perhaps
less obvious safety feature is the
high-quality surface protection.
More than 30 years ago, we
became the first manufacturer in
the world to use a hot-dip gal-
vanised steel shell. This exacting
process is fundamental to thelegendary durability of our cars. It
also ensures a consistently high
standard of crash protection, even
after many years on the road.
Sheet steel
Tailored blanks
High-strength steel
Super high-strength steel
Aluminium
Intelligent crash technology.
Passive safety.

· 63 · · 62 ·
The 911 GT2 |Safety
Porsche Side Impact Protection
(POSIP).
The 911 GT2 is equipped as
standard with the latest generation
of Porsche Side Impact Protection
(POSIP). It features two additional
airbags for each front seat: a
head airbag located in each door
and a thorax airbag in the folding
Porsche Side Impact Protection (POSIP)
The airbag control unit is located
in the centre tunnel where it
receives additional information
from a pair of impact sensors
near the headlights. This arrange-
ment allows faster and more
accurate crash evaluation and
thus better airbag deployment.Airbags.
The 911 GT2 has a specially
developed airbag technology
with a total of six airbags. The
full-size front airbags have a two-
stage inflation function which
deploys each airbag separately in
accordance with the force and
nature of the impact (e.g., frontal
or diagonal) before inflating each
airbag accordingly. In a low-speed
crash, the airbag is only partially
inflated, thereby minimising
discomfort to the occupants.
backrest on each of the standard
sport bucket seats (see page 72).
As well as offering exceptional
support, the sport bucket seat
provides a much higher level of
safety than conventional bucket
seat designs.
The thorax and head airbags each
have a volume of approximatelyeight litres, providing high protec-
tion in the event of a side impact.
Another important element of
POSIP is the side impact protection
with door reinforcement.
Other safety features of the
911 GT2 are head restraints that
are an integral part of each seat,
an energy-absorbing steering column, three-point seat belts
with height adjustment, seat-belt
pre-tensioners and force limiters,
energy-absorbing elements in the
dashboard, and flame-retardant
materials throughout the interior.

· 85 · · 84 ·
The 911 GT2 |Environment
Here, all technological developments
are carried out with environmental
protection in mind. The aim: pure
performance – but not at the
expense of the environment.
You can find more information
about environmental matters in the
separate brochure ‘Porsche and
the Environment’, or on our website
www.porsche.com.
Exhaust emission control.
The 911 GT2 easily meets the strin-
gent emissions standards for the
EU4 regulations in Europe and
LEV II regulations in the USA. This
demonstrates that even high per-
formance sports cars can achieve
moderate emissions values in their
respective categories. The 911 GT2
is not only one of the most power-
ful cars around, but also one of the
cleanest. One pair of sensors is
used to monitor the oxygen levels
in each of the twin exhaust tracts.
An additional pair of sensors* –
again, one on each tract – is
located downstream from the cat-alytic converters. This information
is used by the engine management
system to monitor the efficiency of
the catalysts.
Fuel.
The current Porsche sportscar
model range is already compatible
with fuels that have an ethanol
content of up to 10 %. A ‘biofuel’
made from naturally replenishing
materials, ethanol has a positive
impact on the carbon dioxide bal-
ance since the plants grown for its
production also absorb carbon
dioxide from the atmosphere.
Fuel system.
In the fuel supply system, we’ve
minimised the evaporation of
hydrocarbons. This is achieved
through a combination of active
carbon filter and special fuel-tank
coating. All fuel lines are made
from aluminium, while those
carrying vapours are made from
multi-layer plastic.
* Not featured in markets with leaded fuel.
Noise.
The 911 GT2 complies with all
noise regulations in the respective
markets. Rather than resorting
to engine encapsulation, we’ve
eliminated noise at source. All that
remains are the powerful acoustics
you’d expect from a thoroughbred
Porsche.
Servicing.
Longer service intervals are not
only easier on resources, they also
reduce ownership costs.
For service intervals of the 911 GT2,
please refer to the price list.
In an era of intensifying debate
about CO
2emissions, every auto-
motive manufacturer is considering
how to deal with the question of
fuel consumption. Our answer has
long been the same: maximum
efficiency.
Porsche reduces the CO2emissions
of its vehicles annually by an aver-
age of 1.7 %. In relation to engine
power, Porsche is already among
those manufacturers achieving the
lowest CO
2emissions. This has
been achieved through an efficient
drive concept, optimised aero-dynamics, low rolling resistance
and lightweight construction.
This high degree of environmental
responsibility is clearly demonstrated
by our approach to environmental
management at the Porsche
development centre in Weissach.
Powerful performance needn’t cost the earth.
Environment.

· 101 · · 100 ·
Factory collection confirmed. Your Porsche can be
collected on any working day*
(Monday to Friday) at a time that
suits your requirements.
The easiest way to travel from
outside Germany is to fly to
Stuttgart or Frankfurt and then
continue by train, taxi or hire
car (which we can return on your
behalf).
Please note that there are a
number of formalities that must
be completed when you take
delivery of your Porsche. For full
details, please consult your
Porsche Centre, who will also be
happy to assist when it comes
to planning your trip.
* Please note that collection is not possible
during the factory shutdown periods.
evolved into one of the most
advanced production facilities
in the world. Today, all Porsche
engines are constructed here
along with all 911 models. You
can also take delivery of any
model in the Boxster or Cayman
range.
Our factory collection programme
offers a unique insight into the
origins and making of your
Porsche. Like your car, a visit to
Zuffenhausen is an absorbing
blend of past and future. To take
advantage of this exclusive
opportunity, please inform your
Porsche Centre when placing
your specification. A collection
date can then be arranged
when final information regarding
the build of your car has been
Everything about a Porsche
is more intense.
Especially the anticipation.
Your visit to Zuffenhausen is
also an opportunity to explore the
origins of your Porsche. Our
factory tour provides a fascinating
insight into the various production
processes. These range from
engine assembly and the
preparation of upholstery, to the
‘marriage’ of powertrain/chassis
and body – one of the key
moments in the construction of
any car. The factory tour is
one of our oldest traditions and
is always conducted by a Porsche
enthusiast with extensive
knowledge of the marque.Next, you can visit the Porsche
Museum, where you’ll find a
remarkable range of Porsche
models from every era of our
history. A new Porsche Museum –
scheduled for late 2008 – will
offer even more exhibits, even
more historical interest and even
more of the Porsche experience.
For lunch, you can choose
from a three-course menu in our
exclusive guest restaurant.
If there’s time, you can enjoy
some additional refreshments in
the customer lounge or browse
in the Porsche Design Driver’s
Selection shop.
Porsche Design Driver’s Selection shop
Vehicle presentation area in Stuttgart-Zuffenhausen
You won’t be able to sleep
the night before.
The night after, you won’t
want to.
Where better to experience the
first moments with your Porsche
than at the place where it all
began. With factory collection, you
can enjoy the pleasure of Porsche
ownership even before your car
leaves the factory.
Almost 60 years ago, our first
series production models were
crafted by hand in a modest red-
brick building here in Stuttgart-
Zuffenhausen. From those humble
beginnings, the factory has
The moment you’ve been
waiting for.
The highlight of your visit will
undoubtedly be the moment when
you take delivery of your Porsche.
The keys will be presented by a
member of the Factory Collection
Team who will explain everything
you need to know about the car.
When you step inside and start
the engine, you’ll finally experience
what it means to own your own
Porsche.
All that remains is the journey
home – which is sure to live long
in the memory.
Guest restaurant

· 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.

· 109 · · 108 ·The 911 GT2 |
Index
Index
A
ABS 51
Air conditioning, automatic 69
Airbags 62
Alarm system 75
Anti-theft protection 75
Audio system 76
B
Bi-Xenon lighting system 56
Bodyshell structure 60
BOSE® Surround
Sound System 80
Braking system 58
C
Catalytic converters 34, 85
Charge-air cooling 16
Chassis 42
Chrono Package Plus 75, 92
Clubsport package 64, 92
CO
284
Colours 88
Comfort 66
Communication 76, 96
Cruise control 74
D
Design 16
Drive 18
Dual-mass flywheel 39
E
Electronic logbook 78
Engine 20
Engine cooling 26
Engine management system 36
Environment 82
Exhaust emission control 85
Exhaust system 34
Expansion intake manifold 32
Exterior 91
F
Factory collection 100
Fire extinguisher 64, 93
Front axle 44
Fuel supply 35
Fuel system 35, 85
G
Gearbox, manual 38
GSM telephone module 78
H
HomeLink®74
I
Ignition system 35
Instruments 68
Interior 68, 93
Interior materials 70, 95
K
Knock control,
cylinder-specific 36
L
Launch Assistant 38
Leather 89, 95
Lightweight design 24
Loudspeakers 79, 80
Lubrication, dry-sump 25
Luggage compartment 74
M
Mobile phone preparation 79
N
Navigation module 77
Noise 85
O
Oil supply 25
On-board computer 69
Oxygen-sensor control 34, 85
P
ParkAssist 74, 90
Personalisation 86
Porsche Active Suspension
Management (PASM) 48
Porsche Ceramic Composite
Brake (PCCB) 58
Porsche Communication
Management (PCM) 76
Porsche Side Impact
Protection (POSIP) 62
Porsche Stability
Management (PSM) 50
R
Ram air principle 17
Rear axle 45
Rear wing 17
Recycling 84
Roll cage 64, 92
S
Safety 54
Safety, active 56
Safety, passive 60
Seats 72
Seats, adaptive sports 73, 92
Seats, sport bucket 15, 72
Service 102
Servicing 85
Six-cylinder twin-turbo
boxer engine 20, 24
Sound Package Plus 79
Sport tyres 46
Stability control (SC) 14, 50
Steering 52
Steering wheel 71
Storage compartments 73
T
Technical data 106
Telephone module 78
Traction control (TC) 14, 50
Transmission 38
Turbocharger 28
TV tuner 78
Tyre Pressure
Monitoring (TPM) 47
U
Universal audio interface 79
V
Variable Turbine
Geometry (VTG) 28
VarioCam Plus 26
Vehicle tracking system 75
Voice control system 78
W
‘Welcome Home’ lighting 74
Wheels 46