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12 I The new 911 GT3
Aerodynamics and design.
Clear rules apply at the limit. One of
them being that a sport y design alone is
not enough. Each detail must also serve
a particular function.
The new front end has further improved
the aerodynamics of the centre radiator.
This is revealed to the eye by the custom
ary 911 GT3 air outlet to the front of the
luggage compartment lid. Together with
the wider front spoiler lip, it provides
much more downforce at the front axle.
All cooling air openings are protected by
titanium coloured air intake grilles. These are an indication of what lies at the
centre of the concept: motorsport.
Bi
Xenon headlights are fit ted as stand
ard. Their design is reminiscent of
Porsche motorsport classics. Sleek
direction indicators, daytime running
lights and position lights boasting LED
technology create that contemporary
contrast. LED headlights are also
available as an option.
The mirror base of the SportDesign
exterior mirrors reflects the v shaped
st yling of the wheel spokes and air
intake opening in the front end. Three words sum up the rear: wider,
sleeker, sharper. LED taillights emphasise
the horizontal contouring of the rear.
The central t win tailpipe of the sports
exhaust system is painted black.
From afar, the fixed rear wing visibly
distinguishes the 911 GT3 from a 911.
The wing, wing uprights and rear lid are
made of a light weight synthetic material.
The ram air collector intake is now a
single unit.
That ’s the downforce and engine air
induction prerequisites fulfilled. The
aerodynamics have also been enhanced by the new underbody panelling with
diffuser function at the rear. The result is
considerable downforce for considerable
driving stabilit y and a drag coefficient
of 0.33.
The new 911 GT3 has an even sturdier
and safer stance on the tarmac. Nowhere
does it feel more at home than at the
limit.
Page 10 of 49
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