Porsche 911 GT2 Brochure page 18

Maximum response to minimum effort.
Transmission.
The six-speed manual gearbox in The gear-lever throw is short and
the 911 GT2 is specifically precise, enabling fast and
designed for the high engine accurate gearshifts.
performance. The individual ratios
are carefully matched to the spe- A typical feature of the 911 GT2
cific characteristics of the engine. is the Launch Assistant – for
maximum acceleration from a
standing start. The clutch and
accelerator are depressed when
the vehicle is stationary. When a
boost pressure of approximately
0.9 bar is displayed in the instru-
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On the 911 GT2, this initial delay
is reduced. While the car is still
stationary, the fuel injection is
modified to help the engine reach
maximum output earlier. The boost
pressure is significantly increased
and the engine readied for a faster
start.
A specially designed traction
control system adapts the acceler-
ation procedure automatically
in the ECU to ensure optimum
traction. The clutch remains
engaged. This reduces load and
prevents high clutch wear. The
power is transmitted directly to
the road via the rear axle.
ment cluster, release the clutch as The gearbox is combined with
quickly as possible and maximum a cable linkage and dual-mass fly-
acceleration automatically ensues. wheel offering added comfort and
precision. The close ratio spread
Normally on a turbocharged vehicle enables powerful acceleration
with manual gearbox, the boost within the optimum engine power
pressure under acceleration from band.
a standing start is relatively low.
The turbo effect is delayed as Steel baulk rings on gears two to
the engine gathers speed and five ensure a precise gearshift
the boost pressure starts to build. action even under extreme loads.
The 911 GT2 |
Cooling is provided by an add-
itional oil-to-water heat exchanger
and spray lubrication. Both of
these features are essential for
durability in endurance racing
conditions.
Other standard features include
a limited-slip differential with
asymmetrical lock factor. Offering
better traction and handling
when exiting a corner, it applies a
higher proportion of drive torque
to the loaded outer rear wheel.
The term 'asymmetrical' means
that one lock factor is applied
when cornering under power
(28 %), and another when braking
for a corner (40 %).
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Drive