Not just a super car that carries on
the name of racing driver Pierre
Veyron, who, while racing for the
original Bugatti car manufacturer,
won the 24 hours of Le Mans in
1939, Bugatti Veyron 16.4 is the
second fastest car in the world and
the most powerful, it can easily pass
as a super hero`s car like Batman. It
has the fastest acceleration speed,
reaching 60 mph in 2.6 seconds.
Endowed with a W16 engine-16
cylinders in 4 banks of 4 cylinders
fed by four turbochargers, a dual-
clutch DSG computer-controlled
manual transmission, the Veyron
has a length is 4462 mm (175.8 in) a
wide of 1998 mm (78.7 in) and
hight of 1206 mm (47.5 in).
Counting a sum of 10 radiators, for
the engine cooling system, for
transmission oil, a heat exchanger
for the air to liquid intercoolers, for
engine oil etc., the car has a power
to weight ratio of 529 bhp/tonne.
If we talk about performance we are
dazzled by this supercars power to
reach 200 and 300 km/h (124 and
186 mph) in 7.3 and respectively
16.7 seconds, wining for herself the
name of the quickest-accelerating
production car in history. If we
count the fact that the top speed of
Bugatti Veyron is 253.2 miles per
hour (407.5 km/h), a speed limited
electronically to prevent tire damage
(it can run even faster) we can
understand why this spectacular car
must consume 40.4 L/100 km (4.82
mpg) when it`s running at top
speed and in city driving 24.1 L/100
km.
A model driven by a superstar like
Tom Cruise, couldn`t name itself
cheap, raising the Bugatti Veyron to
a price tag of $1,700,000, a price
that measures up to it`s quality.
Many new designs has been
released since 2006, the color might
have changed, but the performance
and power remain the same..
Thursday, July 14, 2011
Saleen S7
When it went on sale in 2002,
the S7 was the only street-legal
car in the U.S. with more than
500 horsepower and 500 lb-ft of
torque. The media and S7
owners have raved about the
car and it has been recognized
by numerous automotive
magazines as the fastest
American car in the world.
But during the past three years
the automobile marketplace has
witnessed an explosion of
performance with models from
manufacturers including Ferrari,
Lamborghini, Mercedes-Benz,
Porsche and Chevrolet touting
power numbers above the once
magic 500 level. Saleen is not an
organization content to rest on
yesterday's 0-60 mph times or
quarter-mile speeds. So for 2005
it's ''all hail the S7 Twin Turbo!''
This is the first major change to
the S7 since its introduction, and
it is a BIG change as in 750
horsepower and 700 lb-ft of
torque, numbers the competition
will be chasing for a long while
we predict.
What's New for 2005
It was pretty obvious to Saleen
product planners during the late
1990s that horsepower and
torque numbers were trending
upwards, especially among the
purveyors of supercars. And
power figures that looked
spectacular at that time might
seem quite ordinary a few years
down the road. So Saleen
engineers have been planning for
thisday since they drew the
first line on a computer screen
for the original S7's 7-liter
engine.
Aerodynamics has also come
under scrutiny for 2005. Unless
you place the new S7 Twin Turbo
next toone of the original 2002
models, you probably won't
notice that the 2005 version has
a different diffuser/rear spoiler
package and reshaped front
fenders to enhance the S7s
already sleek, swoopy and
aerodynamic contours. For the
2005 S7 Twin Turbo, the
redesigned front and rear
diffusers, along with the new
rear spoiler, result in a 40
percent reduction in aero drag
and a 60 percent increase in
down force.
To complement the Twin Turbo's
enhanced straight-line
performance envelope The S7
chassis has also undergone a fair
amount of tweaking. Virtually
every suspension pickup point
has been changed, and the
suspension geometry has been
modified for less squat and dive
during acceleration and braking.
To further improve driving
comfort and ergonomics, the S7
Twin Turbo incorporates a
revised pedal box. The clutch and
throttle leverratios pedals have
been changed for lighter pedal
efforts. In addition, the three
pedals have been spaced farther
apart without impinging upon the
dead pedal.
Engine & Drivetrain
The new all-aluminum V8 engine
casting was engineered and
tooled by Saleen to displace
seven liters. Space age materials
and engineering are used
throughout, including stainless
steel valves, titanium retainers,
beryllium exhaust valve seats, an
aluminumthrottle body, Saleen-
designed aluminum CNC-machined
cylinder heads and stainless steel
exhaustsystem. The V8
incorporates a unique Saleen-
designed side-mounted water
pump, a belt-driven camshaft
drive and a Saleen-engineered
dry sump oil delivery system.
The engine's mid-chassis
placement optimizes weight
distribution and makes room for
an unusually tall engine that
allows for a very efficient
induction system. Air enters a
roof intake, passes through a
90-mm mass air meter and feeds
into a carbon fiber plenum. From
the plenum the air is routed to
the twin ball bearing turbos, is
pressurized to 5.5 psi max and
then passes through an oval-
bore throttle body into an
aluminum intake manifold with
eight individual runners.
To feed juice to this setup, the
injection system includes dual
electric fuel pumps and high-
capacity, return-less, 52 lb/hr
fuel injectors. Neatly engineered
and integrated into the S7's
stainless steel, dual, high-flow
exhaust system are two, twin-
ball-bearing, water-cooled
Saleen-Garrett turbos, featuring
44-mm wastegates. The four
exhaust pipes from each bank of
cylinders merge into a race-car-
like high-efficiency collector. In
addition, the exhaust
incorporates dual catalysts per
cylinder bank, EGR and those
aforementioned twin wastegates.
And because Saleen believes in
power and clean air, the emission
controlsystem features dual,
heated oxygen sensors per
cylinder bank and a high-volume
evaporative emission system
along with those four catalysts.
Oh, and for good measure and
clean air, the system is OBD-II
compliant.
One of the few internal changes
to the twin-turbo engine is a
swap from hydraulic to solid
lifters. This change allows the
engine to rev higher and harder.
Also, as is typical with
turbocharged engines, the
compression ratio has been
lowered. It drops from a very
high 12.0:1 in the previous
naturally aspirated V8 to a still
high 11.0:1. And for increased
durability, Saleen engineers also
added oil squirters to cool the
undersides of the pistons.
A new-generation six-speed
transaxle, with a unique Saleen
bell housing, transfers power to
the wheels. The clutch is an
organic/metallic 8.0-inch, twin-
plate unit with hydraulic
actuation.
Chassis, Suspension &
Brakes
A major improvement in ride is
achieved for 2005 with the use
of coil springs that are a dual-
stage design. The first spring has
alower rate than the single
springs fitted to the current S7,
resulting in softer ride during
normal street driving. But if you
remember your history, you
know that the S7 is a flat-
bottom, downforce car. The
faster you go, the more
downforce the S7 develops. In
the case of the S7’s new
dual-stage springs, the second
stiffer spring starts coming into
play at around 100 mph when
the car begins to develop
serious downforce.
Chassis tuning also includes
revised shock valving front and
rear. Saleen-engineered Brembo-
supplied lightweight aluminum six-
pistonmono-block calipers are
fitted front and rear. The
brakes are among the largest of
any production car with 15-inch
vented discs up front and 14-
inch vented discs at the rear.
Geometry changes, along with
new tires, result in about a 30
percent increase in mechanical
grip . . . which is substantial. In a
seeming contradiction to current
performance tire practice, the
2005 S7 Twin Turbo is fitted with
tallertires, 275/35R19s up front
and 335/30R20s at the rear.
While the Michelin Pilot Sport PS2
tires have higher aspect ratios,
they also lay tire patches that
are 1.5 inches wider at the rear.
Conclusion
None of the S7's major supercar
competitors, such as the Ferrari
Enzo, the McLaren F1 and the
Maserati MC12, are a match for
the S7 Twin Turbo's prodigious
horsepower and torque figures:
All are at least 100 bhp and
more than 200 lb-ft in arrears
of the S7. Chalk up another
victory for good old American V8
engine ingenuity.
It's also no contest when it
comes to price. The
Manufacturer's Suggested Retail
Price (MSRP) for the 2005 S7
Twin Turbo is $555,000. That's
$100,000 less than an Enzo
(which is out of production and
escalating in price) and nearly
$300,000 fewer dollars than the
Maserati. And you could have Her
andHis S7s for the price of the
McLaren F1!
Story by Saleen Inc, edited by
Supercars.netuam..
the S7 was the only street-legal
car in the U.S. with more than
500 horsepower and 500 lb-ft of
torque. The media and S7
owners have raved about the
car and it has been recognized
by numerous automotive
magazines as the fastest
American car in the world.
But during the past three years
the automobile marketplace has
witnessed an explosion of
performance with models from
manufacturers including Ferrari,
Lamborghini, Mercedes-Benz,
Porsche and Chevrolet touting
power numbers above the once
magic 500 level. Saleen is not an
organization content to rest on
yesterday's 0-60 mph times or
quarter-mile speeds. So for 2005
it's ''all hail the S7 Twin Turbo!''
This is the first major change to
the S7 since its introduction, and
it is a BIG change as in 750
horsepower and 700 lb-ft of
torque, numbers the competition
will be chasing for a long while
we predict.
What's New for 2005
It was pretty obvious to Saleen
product planners during the late
1990s that horsepower and
torque numbers were trending
upwards, especially among the
purveyors of supercars. And
power figures that looked
spectacular at that time might
seem quite ordinary a few years
down the road. So Saleen
engineers have been planning for
thisday since they drew the
first line on a computer screen
for the original S7's 7-liter
engine.
Aerodynamics has also come
under scrutiny for 2005. Unless
you place the new S7 Twin Turbo
next toone of the original 2002
models, you probably won't
notice that the 2005 version has
a different diffuser/rear spoiler
package and reshaped front
fenders to enhance the S7s
already sleek, swoopy and
aerodynamic contours. For the
2005 S7 Twin Turbo, the
redesigned front and rear
diffusers, along with the new
rear spoiler, result in a 40
percent reduction in aero drag
and a 60 percent increase in
down force.
To complement the Twin Turbo's
enhanced straight-line
performance envelope The S7
chassis has also undergone a fair
amount of tweaking. Virtually
every suspension pickup point
has been changed, and the
suspension geometry has been
modified for less squat and dive
during acceleration and braking.
To further improve driving
comfort and ergonomics, the S7
Twin Turbo incorporates a
revised pedal box. The clutch and
throttle leverratios pedals have
been changed for lighter pedal
efforts. In addition, the three
pedals have been spaced farther
apart without impinging upon the
dead pedal.
Engine & Drivetrain
The new all-aluminum V8 engine
casting was engineered and
tooled by Saleen to displace
seven liters. Space age materials
and engineering are used
throughout, including stainless
steel valves, titanium retainers,
beryllium exhaust valve seats, an
aluminumthrottle body, Saleen-
designed aluminum CNC-machined
cylinder heads and stainless steel
exhaustsystem. The V8
incorporates a unique Saleen-
designed side-mounted water
pump, a belt-driven camshaft
drive and a Saleen-engineered
dry sump oil delivery system.
The engine's mid-chassis
placement optimizes weight
distribution and makes room for
an unusually tall engine that
allows for a very efficient
induction system. Air enters a
roof intake, passes through a
90-mm mass air meter and feeds
into a carbon fiber plenum. From
the plenum the air is routed to
the twin ball bearing turbos, is
pressurized to 5.5 psi max and
then passes through an oval-
bore throttle body into an
aluminum intake manifold with
eight individual runners.
To feed juice to this setup, the
injection system includes dual
electric fuel pumps and high-
capacity, return-less, 52 lb/hr
fuel injectors. Neatly engineered
and integrated into the S7's
stainless steel, dual, high-flow
exhaust system are two, twin-
ball-bearing, water-cooled
Saleen-Garrett turbos, featuring
44-mm wastegates. The four
exhaust pipes from each bank of
cylinders merge into a race-car-
like high-efficiency collector. In
addition, the exhaust
incorporates dual catalysts per
cylinder bank, EGR and those
aforementioned twin wastegates.
And because Saleen believes in
power and clean air, the emission
controlsystem features dual,
heated oxygen sensors per
cylinder bank and a high-volume
evaporative emission system
along with those four catalysts.
Oh, and for good measure and
clean air, the system is OBD-II
compliant.
One of the few internal changes
to the twin-turbo engine is a
swap from hydraulic to solid
lifters. This change allows the
engine to rev higher and harder.
Also, as is typical with
turbocharged engines, the
compression ratio has been
lowered. It drops from a very
high 12.0:1 in the previous
naturally aspirated V8 to a still
high 11.0:1. And for increased
durability, Saleen engineers also
added oil squirters to cool the
undersides of the pistons.
A new-generation six-speed
transaxle, with a unique Saleen
bell housing, transfers power to
the wheels. The clutch is an
organic/metallic 8.0-inch, twin-
plate unit with hydraulic
actuation.
Chassis, Suspension &
Brakes
A major improvement in ride is
achieved for 2005 with the use
of coil springs that are a dual-
stage design. The first spring has
alower rate than the single
springs fitted to the current S7,
resulting in softer ride during
normal street driving. But if you
remember your history, you
know that the S7 is a flat-
bottom, downforce car. The
faster you go, the more
downforce the S7 develops. In
the case of the S7’s new
dual-stage springs, the second
stiffer spring starts coming into
play at around 100 mph when
the car begins to develop
serious downforce.
Chassis tuning also includes
revised shock valving front and
rear. Saleen-engineered Brembo-
supplied lightweight aluminum six-
pistonmono-block calipers are
fitted front and rear. The
brakes are among the largest of
any production car with 15-inch
vented discs up front and 14-
inch vented discs at the rear.
Geometry changes, along with
new tires, result in about a 30
percent increase in mechanical
grip . . . which is substantial. In a
seeming contradiction to current
performance tire practice, the
2005 S7 Twin Turbo is fitted with
tallertires, 275/35R19s up front
and 335/30R20s at the rear.
While the Michelin Pilot Sport PS2
tires have higher aspect ratios,
they also lay tire patches that
are 1.5 inches wider at the rear.
Conclusion
None of the S7's major supercar
competitors, such as the Ferrari
Enzo, the McLaren F1 and the
Maserati MC12, are a match for
the S7 Twin Turbo's prodigious
horsepower and torque figures:
All are at least 100 bhp and
more than 200 lb-ft in arrears
of the S7. Chalk up another
victory for good old American V8
engine ingenuity.
It's also no contest when it
comes to price. The
Manufacturer's Suggested Retail
Price (MSRP) for the 2005 S7
Twin Turbo is $555,000. That's
$100,000 less than an Enzo
(which is out of production and
escalating in price) and nearly
$300,000 fewer dollars than the
Maserati. And you could have Her
andHis S7s for the price of the
McLaren F1!
Story by Saleen Inc, edited by
Supercars.netuam..
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