I know there are several other threads about the soon-to-be-here
PDK
tranny, but thought I'd forward to you an excerpt from the September 2008 Motor Trend (part of their review of the 2009 911):
The Twin Clutch seven speed upshifts far more quickly than you can say "PorscheDoppelKupplungsgetriebe." To avoild pulling a glottal mucscle, just call it PDK - and also call it a vast improvement over the outgoing automanual.
Built by ZF, PDK's three-shaft configuration is more compact, lighter than Tiptronic by 22 pounds, and so efficient there's no auxiliary cooler even though there's less gearbox lubricant to reduce internal drag. Instead, airflow is all that keeps the oil at optimum temperature (though the two wet clutches have a separate oil chamber cooled by a small heat exchanger).
The two clutches each handle a different gear set, divided into 1-3-5-7 and 2-4-6. Electronic eavesdropping and control are handled by four position sensors, two pressure sensors, two rev-speed sensors, and eight electrical pressure adjusters, and the data flow is controlled by an ECU with three times the former computing power. What that means is the PDK will operate in either a consumption-optimized shift strategy or one that gets the most out of the powertrain. Gear changes are quicker by up to 60%, which in turn improves the car's fuel mileage by reaching taller gears more quickly and its acceleration by exploiting the rotary mass's energy during startup and upshifts, and by eliminating the interruption of tractive force.
Compared with Tiptronic S, the new Carrera S is 15% faster to 62 mph and almost 20% faster with Sport Chrono plus, yet, compared with Tiptronic S, PDK also helps reduce both engines' CO2 emissions by more than 15% by reducing fuel consumption by around 15%.
My dealer has scheduled me to drive a 997
Carrera
S with
PDK
as soon as possible. Should be interesting and I will report.
Local dealer has a
PDK
cutaway.
911 review, with good
pdk
overview . around 6 minutes in
Drove a 997S w/
PDK
on Saturday, car also had all the related
sports chrono
options. Solid thirty minutes with the car including more than a few shall we say "spirited" accelerations. Can't deny that the
PDK
is an excellent piece of technology (super fast shifts, downshift throttle blips, easy use, etc) and 385hp is surely a welcome addition but when I got back in my CS manual for the trip home and did a similar style drive I can't say I saw $40k worth of difference. In fact, though it may just be my CS bias, I think I had more fun in mine. Just one opinion based on one drive....
i drove one too this saturday, very imprassive i must say,
my dealer took a deposit for a
Cayman S
PDK
, hope i hear from him soon about the final options list.
I drove one and I think it's really for auto drivers.
