Six-Speed Manual Gearbox; Porsche Doppelkupplung - Porsche 911 Carrera 4 GTS User Handbook Manual

Precise actions hit the mark sooner.
The same is true of our transmission concepts.

Six-speed manual gearbox.

Accurate and involving: the
six-speed manual gearbox is
the link to each and every gear.
The cable-operated gearshift
unit is designed for optimum
progression through the gears
and the gear lever is insulated
from the engine and gearbox.
With minimal resistance, the
gear lever throw is short and
precise, enabling a rapid
gearshift action and positive
response.

Porsche Doppelkupplung

(PDK).
PDK is available as an option
for the 911 Carrera GTS models.
Gear changes take place in
milliseconds, for vastly improved
acceleration and lower fuel
consumption.
In total, PDK has seven gears at
its disposal. Gears 1 to 6 have a
sports ratio, with the top speed
being reached in 6th gear. The
7th gear has a long ratio and
helps to reduce fuel consump-
tion even further. PDK is essen-
tially two half gearboxes in one
and thus requires two clutches –
designed here as a double wet
clutch transmission.
This double clutch provides an
alternating, non positive connec-
tion between the two half gear-
boxes and the engine by means
of two separate input shafts
(input shaft 1 is nested inside
the hollowed-out input shaft 2).
The flow of power from the
engine is only ever transmitted
through one half gearbox and
one clutch at a time, while the
next gear is preselected in the
second half-gearbox. During
a gear change, therefore, a
conventional shift no longer
takes place. Instead, one clutch
simply opens and the other
closes at the same time.
PDK and the manual gearbox
deliver power directly to the
road. With the optional Sport
Chrono Package Plus (p. 28),
you can make it more direct,
and sportier. With a rush of
adrenaline and euphoria, you
are straight into the action.