Category: porsche

Porsche 977 bodyshell

A new Porsche 911 is always fascinating because its interesting
to see how after more than 40 years of development the Porsche
team still manages to bring changes and improvements to this
icon model.

The new 997 bodyshell combines the sleek modern looks of
the 996 series with the popular retro styling cues from older 911s.
The front end is completed with round lights and separate
parking/fog/indicator lights. This change, combined with wider
hips echoes the last of the air-cooled 911s, the 993. Other changes
in the bodyshell are the new door handles, wing mirrors and the
stylish cut of the rear wings into the bumper/lights.

Even if the 997 looks a lot like the previous model, the 996, the new
car is actually 38mm wider which creates a more aggressive
appearance. With each new model introduced, Porsche has aimed
to reduce the drag co-efficient helping the 911 slide through the air
more effectively, and so aiding performance. The same thing has been
done with the new car, and if we compare the 993 Cd of 0.34 to the
997`s 0.28 we can see how far the aerodynamic game has moved on.
The latest body shell and rear wing combine with new underbody
paneling to also offer increased levels of down force for this latest
evolution of Porsche’s finest.

The latest Porsche model is the best handling 911 ever. Improving a
car’s rigidity helps ensure the suspension can work more effectively
and while not making such a quantum leap as the team did with the
996. Porsche improved torsional rigidity by 8% and added as much
as 40% more flexural strength.

For the new car, Porsche wanted to improve crash safety so they
added two new air bags located in the side of each front seat back-rest,
designed to protect the thorax. They kept the previous two front and two
side airbags, which means that now there are six in total. For the same
reason, crash safety, the reinforced body shell features further protection
such as a more extensive use of super high strength steel.

The latest model is also 50 kg heavier than the 996. The reason is that
modern crash safety regulations kind of force the new cars to come with
increased weight, despite the usage of a large range of weight saving
measures, including an aluminum bonnet.

Aside from the crash safety improvements, much of the additional weight
can be attributed to the higher standard specification of the new cars.
Power to weight is similar with the latest car offering 233 bhp per tone
against its predecessors 238 and the new models improved aerodynamics
must help it post Porsches claimed performance figures, which are
identical to the 996.

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Porsche 911 highlights

The 2005 Porsche 911 redesigned rear-wheel-drive models.
The models are available as coupes and convertible Cabriolets.
They all have a rear-mounted, horizontally opposed 6-cyl engine.
The redesigned Porsche 911 has subtly altered styling and dimensions
and changed the interior. There are two types of 911: The Carrera, with a
325-hp 3.6 liter engine and The Carrera S, with 355-hp 3.8 liter.

The 6-speed manual transmission is standard to all 911s. Optional,
we can choose the 5-speed automatic with manual shift gate and
steering-wheel controls. Standard, the 911s have antilock 4-wheel
disc brakes, antiskid/traction control and front side airbags. The
redesigned Careras include side airbags in the windowsills for head
protection. In the convertibles models, we find a power top and heated
glass rear window. A suspension with lowered ride height and shock
absorbers are standard on the Carrera S and optional on the Carrera. This
system helps adjusting firmness within driver selectable Normal and
Sport models. All other Porsche models have 18 inch wheels, but the Carrera
S has 19s. An option for the Carrera is a Sport Chrono Package. It includes
a dashboard-mounted stopwatch and it allows altering various engine and
chassis controls in order to improve driving performance. All 911s offer
a navigation system.

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Porsche 914

Introduced in September 1969, the Porsche 914 was a sporty,
mid-engined two-seater with a targa top and a 4 cylinder boxer
engine. The idea for this new model came up as Volkswagen
and Porsche collaborated to create a new car. VW would take
914 bodies and finish them as 914/4s, and Porsche would take
their portion of the body shells, and build 914/6s. When sold in
North America, however, all 914s would be considered Porsches.

Porsche 914 is not like other Porsches. It has pop-up headlamps,
a vertical rear windshield, and a flat deck lid covering the rear
trunk and engine. It has no backseats so when you sit down,
you are practically on the floor, which is on the road.

The interior of the 914 is quite simple, not luxurious but with all
necessities. Theres not too much space other than the
passenger seat. The transmission is like the 928’s with 1st
down and to the left. The 914 has a targa top, and like
911’s, it stores in the trunk. But if you take off the top and
roll down the windows, the Porsche 914 is a pretty nice
little roadster.

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Porsche checking fluids

In order to avoid big, expensive problems, you should check
under the hood of your Porsche on a regular basis. By following
these simple monthly checks you will find and solve these potential
problems.

First of all, you should check the oil, but only when the engine is warm.
Thats because it expands when it’s hot and contracts when it’s cold;
different temperatures will give you different readings. And since youre
already checking the fluids you should also check the
brake fluid. It’s easy to do and only takes a minute.

Radiator fluid, or coolant, is the most important part of your Porsche’s
cooling system, which protects your engine from overheating. Low
coolant can lead to a breakdown and expensive repairs. Before
checking the power steering fluid (which is also easy on most cars)
you should see if you have it. Try to parallel park with one hand and
eat an ice cream cone with the other. If you can do that, then you have it.

If you have an automatic transmission, you’ll want to check the
automatic transmission fluid (ATF) every month. Also, if your Porsche
has a hydraulic clutch that connects the clutch pedal to the
transmission, you should check that fluid too.

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Porsche Chayenne – the engine

With every new automobile, Porsche tried to redefine the meaning
of performance, by creating a more powerful engine. Cayenne Turbo
makes no exception to this rule. Like all Porsche engine, it is hand
assembled and the twin turbo V8 rises to an exacting level of technical
excellence.

Motronic ME7.1.1.is a system that controls the split-second precision
of the Cayenne V8 and V6 super engine. This new highly intelligent
engine management system balances impressive power with great
smoothness. All this to prove that Cayenne`s “brain” matches its brawn.
The Motronic system is built to monitor a wide range of sensors and
engine components. It compares streams of data with corresponding
sets of reference values, all this in a speed of milliseconds. Then, if it
finds any differences, the system adjusts key engine functions, such as
the ignition of fuel injection, based on this comparison. Into Motronic
management are included other key systems, such as onboard diagnostics
and cylinder-specific knock control, with automatic adaptation to any
change in fuel quality. All this for optimal performance in all driving conditions.

This process is seamless and automatic so the engine has a great
level of power and torque. Also, another great result is better fuel
economy and lower emissions in the exhaust stream.

Another function of the Motronic system is the managing of air flowing
into the engine to ensure maximum levels of performance. It does that
by regulating boost pressure on the Cayenne Turbo.

The Cayenne model includes another system, the resonance induction
system with a variable-length intake manifold. This is also an inventive
engineering concept that uses pressure waves created by the inlet
valves. It does this to increase the density of the incoming air, which,
in the end, will increase the amount of energy released during combustion.
There are two intake tubes, and depending on the speed, the system
will select one of them. The longer tube is used at lower speeds in order
to maximize low-end torque. At around 4250 rpm, it switches to shorter
Intake tube so that it maximizes power output with a more eager throttle response.

The Porsche Cayenne engineers wanted to improve combustion for
more power, better fuel economy, reduced emissions and less
maintenance. To do so, they created a static high-voltage ignition
system with separate ignition coils on each individual spark plug.
This is an advanced method that allows a longer spark-plug life.
The sequential fuel injection system is equally advanced. A returnless
fuel supply system serves each injector in order to continuously
adjust the precise air/fuel mix. The result is of course a better environment,
because it controls the emissions.

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