2013 PORSCHE 911 GT3 fuel pressure

Engine.
Located just above the tarmac and posi­
tioned low down in the rear is the newly
developed water ­cooled six ­cylinder alu ­
minium engine with four valves per cylin ­
der, VarioCam and a separate engine
oil tank.
This high ­revving concept promises excep ­
tional
power. The engine has a maximum
speed of 9,000 rpm.
Maximum torque
of 440
Nm is available at 6,250 rpm and
maximum power output is
produced
at 8,250 rpm. Particularly light weight
Two hundredths of a second are worlds apart.
What are we waiting for?
titanium connecting rods facilitate the
unit’s impressive rpm capability.
The engine taps into its capacit y of
3.8 litres to generate a maximum power
output of 350 kW (475 hp). This corre ­
sponds to a power output per litre of
92 kW (125 hp). The new 911 GT3 tears
acceleration limits asunder: it sprints
from 0 to 100 km/ h in just 3.5 seconds –
0.6 seconds faster than its predecessor.
The 200 km/ h mark is also reached
0.9 seconds sooner, after precisely
11. 4 s e c o n d s .
How is that possible? Thanks to a weight
­
to ­power ratio of only 4.1 kg / kW
(3.0 kg / hp), a great deal of fine ­tuning
and the short transmission ratios of
Porsche Doppelkupplung (PDK). These
increase torque and acceleration potential
in all seven gears. Limits? The new
911 GT3 accepts that only the other side
of the 315 km/ h mark is beyond its reach.
Direct fuel injection (DFI), fitted in a
911 GT3 model for the first time, makes
a decisive contribution to the efficiency
of the engine – and its power output. It does it with millisecond precision and

a pressure of up to 200 bar for optimum
mixture formation and combustion in the
combustion chamber.
For fuel consumption, CO
2 emissions and efficiency class, please refer to page 91.

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VarioCam.
The upgraded VarioCam system is an
engine timing concept that distinguishes
bet ween various engine speeds and
load states so that timing can be adapted
to suit the current power demand. It
regulates not only the adjustment of the
intake camshafts but also the exhaust
camshafts in order to deliver increased
power and torque.
Adjustments are controlled imperceptibly
by the new electronic engine manage ­
ment. The results are extremely smooth
running, better fuel economy, low emis ­
sions and, above all, high power and
torque across the entire engine speed
range.
Dry-sump lubrication.
The engine oil supply is vital at the limits
of sporty performance, especially
in the presence of the powerful lateral
and longitudinal forces that can be
experienced on the racetrack.
Two oil scavenge pumps per cylinder
head and t wo scavenge pumps in the
crankcase return the engine oil quickly
and efficiently to the external tank.
In conjunction with the electronically
controlled oil pressure pump, this means
that the engine has a reliable supply
of oil to the crankshaft drive and both
cylinder banks. The new 911
GT3 is factory ­filled with
Mobil 1 fully synthetic high ­performance
oil. The excellent lubrication properties of this oil ensure a reliable cold start, even
at ver y low temperatures, and contribute
not least to the durabilit y of the engine.

1. Cylinder head
2. Intake camshaft
3. VarioCam intake and exhaust
camshaft controller
4. Timing chain
5. Valve spring
6. Intake valves
7. Follower
8. High-pressure injector
(direct fuel injection)
9. High-pressure pump
(direct fuel injection)
10. Crankshaft
11. Cylinder with Alusil liner surface
12. Forged aluminium piston

13. Forged titanium connecting rod
14. Variable intake manifold
15. Resonance flap
16. Electronically controlled
throttle valve
17. Air-conditioning compressor
18. Water pump
19. Water thermostat

20. Separate engine oil tank
(dry-sump lubrication)
For fuel consumption, CO2 emissions and efficiency class, please refer to page 91.
911 GT3: 350 kW (475 hp) at 8,250 rpm, 440 Nm at 6,250 rpm
360
340 320
300 280260 240
220
200 18 016 0
14 0
120 10 0 8060
40
1000 15 0 02000 25003000 35004000 45005000 55006000 65007000 7500 80008500 9000 950010000 520
500
480 460
440 420
400 380360
340 320
300 280260 240
220
200
Torque (Nm) Power (kW)
Engine speed (rpm)
440 Nm
350 kW (475 hp)
20 I Thrust

Intake manifold.
In interaction with the sports exhaust
system, the plastic variable intake manifold
helps to ensure efficient gas cycles and
high throughput.
To guarantee high torque and power
across a broad engine speed range,
the conventional distributor pipe in the
new 911 GT3 is supplemented by a
resonance pipe with resonance flap. This is opened or closed depending on
the engine speed. For optimum cylinder
charge.
This results in an impressive torque
curve, a high maximum torque and
ultimate power output across a broad
engine speed range.
Sports exhaust system.
The sports exhaust system of the new
911
GT3 has t wo front silencers, t wo
catalytic converters and one rear silencer,
which discharges into the central twin ­tract
tailpipes. The large volume of the exhaust
system reduces exhaust backpressure and
thus increases power output.
The t wo Lambda sensors of the stereo
Lambda control circuitry regulate the composition of the exhaust gas separately
in each exhaust tract, while another

pair monitors pollutant conversion in the
respective cataly tic converters.
Thrust I 23
For fuel consumption, CO2 emissions and efficiency class, please refer to page 91.

Interior.
The sports car environment in the new
911 GT3 is perfectly adapted to the
driver. Man and machine are as one.
Which is just as well because, on the
racetrack, there is usually only a fraction
of a second in which to make the right
decision. Accelerate or brake. Pass lef t
or right. Refuel or chance another lap.
Speed is critical in the cockpit, too.
The driver needs information that can
be accessed quickly and an interior ergonomics concept that enables even
faster use of it.
The requirement is fulfilled by an ascend
­
ing centre console that places the gear
selector within direct reach of the steer ­
ing wheel, by ergonomic gearshift pad ­
dles on the steering wheel itself and by
conveniently positioned controls that
dispense with unnecessary gadgetry but
do open up new possibilities on the
racetrack. 30,000 racing victories were
not achieved by engine power alone.
Instruments.
Precise not fanciful, minimalist not kitsch.
True to Porsche st yle, the five circular
instruments integrated in the cockpit lead
the way. In the middle is the rev counter.
Its dial face is titanium­coloured and
bears the ‘GT3’ logo. The gear and
upshift indicator helps you to achieve
optimum acceleration.
For the first time in a 911 GT3, the instru ­
ment cluster is equipped with a high ­
resolution 4.6 ­inch TFT colour display. It provides you with data from the on
­board
computer, including average speed and
fuel consumption, fuel range and outside
temperature, and allows you to view Tyre
Pressure Monitoring (TPM) information
as well as data from the stopwatch of the
optional Sport Chrono Package. It also
reminds you of your selected communica ­
tion and audio set tings or displays the
map of the optional navigation system –
but only for the rare occasion you aren’t
on the racetrack.
Designed for high speeds.
Speed of travel and speed of thought.
Cockpit I 51

92 I Index
A
A e r o d y n a m ic s 12
Airbags 43
AUX inter face 55
B
B ra k es 41
C
CDR audio system 55
CDR Plus audio system 55
Chassis 30
Clubsport package 45
Colours 76
D
Design 12
Direct fuel injection (DFI) 18
Dry ­sump lubrication 20
Dynamic engine mounts 33
E
Emission control 72
Engine 18
Environment 71
F
Fuel 72
Fuel consumption 71
I
I numbers 78
Instruments 51
Intake manifold 23
Intelligent Shift Program (ISP) 27
Interior 50
M
Motorsport 60
P
Panorama 84
Personalisation 76
Porsche Active Suspension Management
(PASM) 35
Porsche Car Configurator 83
Porsche Ceramic Composite Brake
(PCCB) 42
Porsche Communication Management
(P CM) 57
Porsche Doppelkupplung (PDK) 25
Porsche Exclusive 82
Porsche Side Impact Protection System
(POSIP) 43
Porsche Stabilit y Management (PSM) 37
Porsche Torque Vectoring Plus
(PT V Plus) 37
R
Rear differential lock 37
Rear ­axle steering 30
Recycling 71
S
Safet y 43
Seats
Adaptive Sports seats Plus 53
Sports bucket seats 52
Sports seats Plus 52
Sound Package Plus 55
Sport Chrono Package 57
Sports exhaust system 23
Steering wheel 52
Summary 89
T
Technical data 90
TFT display 51
Tra n s m i s si o n 25
Tyre Pressure Monitoring (TPM) 35
V
VarioCam 20
W
Wheels 35 The models featured in this publication
are approved for road use in Germany.
Some items of equipment are available
as extra
­cost options only. The availabil ­
it y of models and options may vary from
market to market due to local restrictions
and regulations. For information on
standard and optional equipment, please
consult your Porsche Centre. All informa ­
tion regarding construction, features,
design, performance, dimensions, weight,
fuel consumption and running costs is
correct to the best of our knowledge
at the time of going to print (03/13).
Porsche reserves the right to alter speci ­
fications, equipment and deliver y scopes
without prior notice. Colours may
differ from those illustrated. Errors and
omissions excepted. © Dr. Ing. h.c. F. Porsche AG, 2013
All text, illustrations and other information
in this publication are subject to the
copyright of Dr. Ing. h.c. F. Porsche AG.
Any reproduction, duplication or other

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consent of Dr. Ing. h.c. F. Porsche AG.
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