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Old 08 Aug 2007, 06:07 pm
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Default 2004 Honda S2000 - Introduction

Torrance, Calif. - Oct 01 —

Introduction


Overview


The Honda S2000 is a high-performance, 2-seat,
open-topped
roadster with an advanced front-engine, rear-wheel-drive sports
car
configuration. Introduced in 2000 as a commemoration of
Honda's 50th
anniversary, the S2000 incorporates many of the lessons
learned in
the company's five decades of building and racing cars and
motorcycles. Its original concept was to be a true sports car that
could serve as both a practical and fun daily driver and a highly
capable weekend track racer.


For its 2004 redesign, Honda engineers built on those
ideals and
elevated the S2000 to a higher class by strengthening the
all-around
performance, enhancing the interior and giving the exterior a
subtly
bolder appearance. The net gain is an S2000 that is
simultaneously an
improved track car and an improved daily driver.


The 2004 S2000 benefits from the following major
enhancements:



  • Larger displacement 2.2-liter engine (240 horsepower @
    7800
    rpm and 162 lb.-ft. of torque @ 6500 (replaces 240 hp @ 8300
    rpm
    and 153 ft.-lbs. @ 7500 rpm )


  • Larger wheels and tires (17-inch)


  • Revised suspension tuning


  • Revised transmission gear ratios and improved shift
    feeling


  • Bolder front and rear exterior styling


  • Freshened interior design


  • New options including XM Satellite Radio™ and headrest
    speakers



On the track, the 2004 S2000 accelerates with increased
authority
and more pull through corners with a broadened powerband that
comes
on sooner and stronger. The new suspension tuning enhances
vehicle
control qualities at the limit, while minimizing bump steer effects
from road disturbances. Larger 17-inch wheels and tires provide
more
grip and maximize the suspension tuning.


From 1000 rpm to 8000 rpm, available torque and
horsepower
increase between 6- and 10-percent. Additionally, useful power
for
high performance acceleration begins at about 3000 rpm
compared to
about 6000 rpm on the 2000 - 2003 models. This performance
improvement at the lower rpm ranges can be attributed to the
displacement increase, revised valvetrain tuning and the lower
gear
ratios on gears one through four that help magnify the engine
performance gains.


On the street, the 2004 S2000 transmits less ride
harshness, while
the enhanced powerband reduces the need to shift as often in
certain
circumstances. Interior comfort also improves with more elbow
and
shoulder room, and the center console now has two cupholders,
a
storage tray and more utility.


The sum of the entire series of changes produces
significant
results on a platform that sets an industry standard for precision
and performance. In short, the 2004 S2000 sports a new
muscular feel,
refined handling and enhanced interior comfort with better
convenience features while maintaining its focus as a true high
performance sports car.


2004 S2000 Improvements


Performance and Handling



  • Dynamic acceleration potential increased


  • Transmission shifter direct feel increased


  • High-speed stability enhanced


  • At-the-limit performance increased with more gradual
    fall-off


  • Sensitivity to disturbances decreased (less bump
    steer)


  • Steering feedback enhanced


  • Brake pedal dynamic feel enhanced



Comfort and Convenience



  • Interior space increased


  • Interior storage functionality increased


  • Optional audio features added




2004 Honda S2000 vs. 2003 Honda
S2000



































































































































































2004



2003



Change/Notes



Powertrain

Engine



2.2-liter DOHC VTEC



2.0-liter DOHC VTEC



+ 0.2 liters, attributable to engine stroke change



Horsepower



240 @ 7800 rpm



240 @ 8300 rpm



+ 0 hp @ -500 rpm, same peak horsepower with overall
powerband characteristics strengthened 4% to 10% between
1000 -8000 rpm



Torque (lbs.-ft.)



162 @ 6500 rpm



153 @ 7500 rpm



+9 lb.-ft. @ -1000 rpm with improved powerband
characteristics strengthened between 4% and 10% between
1000-8000 rpm. Max torque increases 5%.



Rev Limit (fuel cutoff)



8200



9000



Piston travel configuration decreases rpm limit by 9%
because of piston speed increase.



Compression Ratio



11.1:1



11.0:1



+0.1:1



Transmission Ratios



Reconfigured



-


Gears 1-4 = 4% lower for performance

Gear 5 = 1% lower

Gear 6 = 2% higher



Suspension

Wheels (inches)



Front: 17x7

Rear: 17x8.5



Front: 16x6.5

Rear: 16x7.5



Front: + 1x0.5 (new wheel design)

Rear: + 1x1 (new wheel design)



Tires



Front: P215/45R17

Rear: P245/40R17



Front: P205/55R16

Rear: P225/50R16



Larger contact patch



Springs



New Tuning



-


Front: Increased spring rate 6.7%

Rear: Decreased spring rate 10%



Shock Absorbers



New Tuning



-


Tuned for new suspension settings



Stabilizer Bars (mm)



Front: 26.5x t4.5

Rear: 25.4 x t4.5



Front: 26.5x t4.5

Rear: 27.2 x t4.5



Front: Same

Rear: -1.8 x 0



Ride Height



Non-Load: 5.1

Full-Load: 4.2



Non-Load: 5.1

Full-Load: 4.2



No Change



Body



Aerodynamics



Enhanced



-


5% improvement in Cd from new front bumper design



Body Rigidity



Enhanced



-


Rigidity increased



Front Bumper



Redesigned



-


New bumper and new triple-beam headlight designs



Rear Bumper



Redesigned



-


New bumper, triple beam LED taillights and oval exhaust
tips designs



Weight (lbs.)



2835



2811



+24, attributable to body rigidity increase and new
wheels and tires



Exterior Dimensions

L x W x H (inches)



162.2 x 68.9 x 50.0



162.2 x 68.9 x 50.0



0 x 0 x 0



Interior

Shoulder Room (in.)



50.7



48.4



+0.9 (20mm)



Interior Console



Redesigned



-


New console with two cupholders (+1) and storage
compartment, new trim pieces



Interior Doors



Redesigned



-


Increased elbow and shoulder room, new speaker
enclosures



Steering Wheel



Minor update



-


New Honda emblem



Radio



New design



-


XM Satellite Radio available and optional headrest
speakers added



The 2004 S2000 engine has been re-designed and
displacement
increased by 0.2 liters through lengthening the stroke of piston
travel. The 2.2-liter, DOHC VTEC 4-cylinder engine produces 240
horsepower and 162 lb.-ft. of torque while meeting California's
Low-Emission Vehicle (LEV) standards. Honda's innovative
VTEC
advanced variable valve-timing system, operates the S2000
engine's 16
valves (4 per cylinder) in both intake and exhaust modes. This
system
is compact and tailored to the high-output, high-rpm operating
characteristics of the S2000 engine.



A revised 6-speed, manual transmission provides lower
gear ratios
on gears one through five, and a higher sixth speed gear for
highway
cruising The transmission is a compact design and features a
direct
shift linkage with class-leading feel and short throws. A Torsen
limited-slip differential smoothly delivers power to the rear
wheels,
regardless of traction conditions. The S2000 engine and
transmission
are capable of accelerating the S2000 from 0-60 mph in less
than six
seconds.



Honda's racing experience is also evident in the S2000's
responsive handling. The chassis has an ideal 50/50 weight
distribution, and the body and frame are a hybrid
monocoque-frame
structure that forms a rigid, flex-free platform for the S2000's
in-wheel double wishbone suspension system, and plays an
important
role in helping the S2000 achieve its high level of safety
protection. The power steering system is a highly responsive,
electrically assisted type.



Larger front 215/45 87W and rear 245/40 91W tires are
mounted on
newly-designed 17-inch alloy wheels, and 11-inch brake discs
(vented
in front) provide excellent stopping power and brake feel. For
2004,
new brake pad material improves the pedal feel and resists
fading in
high performance driving. An anti-lock braking system is
standard.



The exterior styling of the S2000's body is angular, modern
and
purposeful, with the 2004 model receiving bolder front end and
rear
end styling. Its long hood and flared front fenders create the
impression of lowness and mass. The nose has slightly
improved
aerodynamics for 2004 that involves re-shaping the front
bumper. High
sides reinforce the cockpit-like feel of the interior.



The interior is modern and designed with the driver's needs
in
mind. The seats contour to provide excellent lateral support
during
aggressive turns and help minimize fatigue. Outward visibility is
unobstructed.



For 2004, controls such as the steering, brakes and clutch,
operate with a new level of precision and have an even more
direct
feel. The aluminum leather-wrapped shift knob and lever,
F1-inspired
digital instrument display and separate engine-start button serve
as
a reminder of the racing heritage of the S2000.



2004 Honda S2000 Roadster Technical Highlights



Advanced technologies used in the S2000:




  • Hybrid monocoque body and "high X-bone frame" has
    torsional
    and bending rigidity of closed-top vehicle, without excess
    weight


  • Highly compact, 2.2-liter, DOHC VTEC engine produces 240
    hp
    and 162 lb.-ft. of torque


  • Compact DOHC three-rocker VTEC variable valve-timing
    system
    adjusts intake and exhaust valve duration


  • Coaxial, roller-bearing cam followers


  • Lightweight, powdered-metal, injection-molded, sintered
    steel-alloy cam followers


  • Electric Power Steering system (EPS)


  • F1-inspired digital instrument panel


  • High-efficiency, low-back pressure, metallic-honeycomb
    catalyst


  • In-wheel, 4-wheel double wishbone suspension
    system


  • Impact-absorbing body and frame designed to help protect
    the
    driver and passenger in full-frontal, offset-frontal, side and
    rear impacts


  • 6-speed, transmission


  • Forged-alloy pistons and "dummy head" honed cylinder
    block


  • Heat-treated, carburized forged-steel crankshaft and
    connecting rods


  • Nut-less connecting rods


  • High-intensity discharge (HID) projector headlights


  • Torque-sensing limited-slip differential


  • Long-wearing FRM (Fiber-Reinforced Metal) cylinder
    liners


  • Compact "in-wheel" double wishbone suspension
    system


  • Engine meets Low-Emission Vehicle (LEV) standards



S2000 Power and Convenience Features



The S2000 has an impressive list of standard comfort and
convenience features, designed to make driving more pleasant
and
enjoyable, including high-intensity discharge (HID) projector
headlights, a power-operated convertible top that opens or
closes in
approximately six seconds, air conditioning, micron air filtration,
cruise control, an AM/FM stereo with CD player, remote-operated
audio
controls, power door locks, power windows, power heated side
mirrors,
Immobilizer Theft-Deterrent System and keyless entry for both
doors
and the trunk. For 2004, XM Satellite Radio and headrest
speakers are
available as optional.



Safety Features



The S2000 is designed to comply with various worldwide
safety
standards and boasts an extensive list of safety features,
including
3-point seat belts with load limiter and pretensioner, a compact
SRS
system for the driver and passenger, roll bars and reinforced
windshield posts, and a body and frame especially designed to
help
absorb the energy of full-frontal, offset-frontal and rear impacts.
Even the hood hinges and windshield-wiper pivots are designed
to
collapse in order to minimize head injury to pedestrians.
Anti-lock
brakes (ABS) are standard.



High-Output 2.2-Liter Engine



In order to give the S2000 an ideal 50/50 weight distribution
and
a low yaw moment, Honda engineers designed the S2000's
2.2-liter,
240-hp, 16-valve, 4-cylinder engine to be as small and as
lightweight
as possible. The engine's aluminum-alloy cylinder head is a
highly
efficient design and features a compact gear- and chain-drive
system
for the dual overhead camshafts. The ancillary drive system for
the
alternator, water pump and air-conditioning compressor is also
a new
space-efficient type.



The S2000 engine's highly rigid, aluminum-alloy cylinder
block
features Honda's long-wearing FRM (Fiber-Reinforced Metal)
cylinder
liners. The lightweight pistons are made of forged aluminum
alloy and
the forged-steel connecting rods and crankshaft are heat-treated
for
added toughness. Numerous friction-reduction techniques, such
as,
roller-bearing cam followers, special pistons and advanced
bearing
materials, are used in the engine.



A compact version of VTEC (Variable Valve Timing and
Electronic
Engine Control), Honda's variable valve timing system, is used
on the
S2000 engine. The VTEC system optimizes torque output over
the
engine's entire operating range, improving both driveability and
performance. The S2000's VTEC uses compact, high-strength,
low-friction, roller-bearing cam followers.



A large-capacity, low-restriction intake system and low
back-pressure exhaust system help ensure free breathing at all
engine
speeds. The exhaust system uses a high-efficiency
metal-honeycomb
catalyst. The new catalyst, combined with the engine's electric
pump-fed, secondary air-injection system, a direct-ignition
system
and Honda-programmed multi-point fuel injection, contributes to
the
S2000's engine achieving its LEV status.



Six-Speed Manual Transmission



The S2000 uses a longitudinally mounted, 6-speed manual
transmission, which is built for high performance. Its gearing
ensures strong performance in every gear, and the shift linkage
is
very direct, with short, precise throws. For 2004, single carbon
synchronizers on all forward gears replace double- and
triple-cone
brass synchronizers in order to provide a more direct shift feel
and
reduce mechanical loss in the transmission. Other features of
the
S2000 drivetrain include a compact pull-type clutch with a clutch
delay system, a highly rigid, one-piece propeller shaft and rigid
axle shafts-all designed to reduce drivetrain flex to an absolute
minimum. The Torsen limited-slip differential is a highly efficient
torque-sensing, clutchless type that smoothly transfers torque to
the
wheel with the most traction, whether cornering or accelerating
in a
straight line.



In-Wheel Double Wishbone Suspension



The S2000's 4-wheel double wishbone suspension system
is a compact
in-wheel design, similar to the type used on racing cars. At each
wheel, rigid upper and lower A-shaped wishbone links carry
suspension
loads directly to rigid subframes, attached directly to the newly
reinforced monocoque body.



For 2004, the suspension geometry has been carefully
tuned for
optimum road-holding and steering feel. Coil springs and
mono-tube,
gas-pressurized shock absorbers (remote reservoirs in the rear)
are
used at each wheel. Front and rear stabilizers (1.04 x 0.18-inch
front/1.00x0.18-inch rear) help keep body roll to a minimum.



High X-Bone Frame



Body rigidity is crucial to good handling in an open-topped
roadster, so Honda engineers designed a highly rigid
monocoque body
for the S2000 and strengthened it even more for 2004. The heart
of
the system is a large central tunnel that runs down the center of
the
cockpit. This tunnel serves as the backbone and main
load-bearing
structure for the vehicle, as well as a housing for the
transmission
and driveshaft.



The body's high side sills, and innovative diagonal (X)
bracing at
the front and rear of the cockpit, provide additional rigidity.
Suspension and drive loads from the wheels are fed directly into
this
structure via highly rigid subframes at the front and rear of the
vehicle.



Electrically Powered Steering System



In place of a conventional hydraulic system, with its hoses,
fluid
and power drain, the S2000 uses an electrically assisted power
steering system. At low speeds, more power-steering assist is
provided, which eases maneuvering and parking. As vehicle
speed
increases, less power assist is supplied, giving the steering a
more
direct feel.



The S2000 Concept and Development



When Honda designers and engineers began work on the
S2000, they
set several overall design goals for it that would ultimately define
its nature. They wanted it to have race-car-like performance and
handling-something an enthusiast driver could use and enjoy,
even in
everyday driving situations. In addition, they wanted the S2000 to
be
a modern, socially responsible automobile, with low emissions
and a
full range of safety features.



The S2000's roadster layout also captures the spirit of the
legendary high-performance sports cars of the past, as well as
Honda's very first sports car, the S500 roadster. However, the
S2000
makes no attempt to be a retro sports car. It is Honda's own
unique
interpretation of a modern sports car-with high performance,
state-of-the-art technology, comfort, style and Honda
durability.



The S2000 and the Honda Spirit



The S2000 is also intended to be a celebration of several
important aspects of the Honda Motor Company's corporate
identity and
spirit. One aspect of that spirit can be found in the company's
history of building sporting automobiles.



From the first S500 to the current Civic Si and the Acura NSX
supercar, Honda has always offered a dedicated performance
car.
Another aspect of the Honda spirit celebrated in the S2000 is the
company's motor sports heritage. Honda started racing
motorcycles
internationally in the 1950s, and entered Formula 1 car racing in
the
1960s. Today, Honda still participates in the most competitive
and
prestigious levels of motor sports, including Formula 1, the Indy
Racing League and Grand Prix motorcycle racing. The S2000
incorporates many of the engineering lessons learned in five
decades
of racing.



The S2000 also represents the Honda spirit of innovation.
From the
first CVCC engine to 4-wheel steering, VTEC variable valve
timing,
and up to the current SULEV, AT-PZEV and ZEV hydrogen fuel
cell
automobiles and engines, Honda products have always
demonstrated the
company's uniquely creative approach to solving engineering
challenges. The S2000 is no different. It is a showcase of Honda
technologies and advanced engineering techniques applied in a
cost-effective manner.



Honda S2000 Features



The following is a list of the standard features found on the
S2000 roadster:



Engineering Features




  • 240-hp, 2.2-liter, 16-valve, DOHC VTEC engine


  • Multi-Point Programmed Fuel Injection (PGM-FI)


  • Direct ignition system


  • Low-back pressure exhaust system with high-efficiency
    catalyst


  • Low-Emission Vehicle-rated (LEV)


  • 6-speed, manual transmission


  • Torque-sensing limited-slip differential


  • Power-assisted 4-wheel disc brakes with ABS


  • High-rigidity "high X-bone frame"


  • In-wheel double wishbone suspension with gas-filled shock
    absorbers and front and rear stabilizer bars


  • Electric Power Steering system (EPS)


  • Variable-ratio rack-and-pinion steering


  • 17-inch alloy wheels (7.0-inch-wide front/8.5-inch-wide
    rear)


  • 215/45 R17 87W front tires


  • 245/40 R17 91W rear tires



Exterior Features




  • Electrically powered soft top


  • Aluminum hood


  • High-intensity discharge (HID) projector headlights


  • Body-colored dual power mirrors


  • Dual-outlet exhaust with oval tips


  • 5-mph, impact-absorbing body-colored bumpers



Interior Features




  • Dual airbags (SRS)


  • Air conditioning


  • Micron air-filtration system


  • AM/FM stereo with CD player and XM Satellite Radio
    capability


  • Remote-operated audio controls


  • Power windows


  • Power door locks


  • Cruise control


  • Digital instrument panel


  • Leather-trimmed seats


  • Center console storage compartments with sliding lid


  • Dual Beverage holder


  • 3-point seat belts with pretensioner and load limiter


  • Engine start button


  • Immobilizer Theft-Deterrent System


  • Keyless entry system for doors and trunk



Exterior and Interior Colors




  • Grand Prix White/Light Tan


  • New Formula Red/Black


  • Sebring Silver Metallic/ Black or Black and Red


  • Silverstone Metallic/Black or Black and Red


  • Berlina Black/Black


  • Rio Yellow Pearl/Black


  • Suzuka Blue Pearl/Blue

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