Thursday, 16 June 2011

Honda S2000

The Honda S2000 was a roadster manufactured by the Japanese automakerHonda Motor Company. It was launched in April 1999 and was created to celebrate the company's 50th anniversary. The car was first shown as a concept at the Tokyo Motor Show in 1995, following which it was launched in world markets in 1999. The S2000 is named for its engine displacement of 2 L, carrying on in the tradition of the S500, S600, and S800roadsters of the 1960s. Several revisions were made throughout the car's lifetime, including changes to the engine, gearbox, suspension and interior and exterior. Officially two variants exist: the initial launch model was given the chassis code AP1, while the AP2 designation was given to vehicles produced from mid-2003 onwards. Though cosmetically similar, the AP2 incorporated significant changes to the drivetrain and suspension. Production of the S2000 ceased in June 2009.

Honda SSM

X-bone frame (yellow) used in the construction of the S2000 chassis.

Introduced at the 1995 Tokyo Motor Show, the Honda Sport Study Model concept car was the design study for the production S2000. The SSM was a rear wheel drive roadster powered by a 2.0 L (122 cu in) inline 4 cyliders. It featured a rigid X-bone frame which aluminium Honda claimed improved the vehicle's rigidity and collision safety. The hood was s and the car had a 50:50 weight distribution.
The SSM would appear unchanged in many automotive shows for several years afterwards, hinting at the possibility of a production version, which Honda announced in due course in 1999. Carrying on the tradition of the company's 1960s S500, S600, and S800 roadsters, the new vehicle was named the S2000.



Honda S2000 (AP1)
Production 1999–2003
Assembly Takanezawa R&D Plant in Tochigi, Japan
The S2000 was introduced in 1999 for the 2000 model year and was given the chassis designation of AP1. It featured a front mid-engine, rear-wheel drive layout with power being delivered by a 1,997 cc (122 cu in) F20C inline 4 cylinder DOHC-VTEC engine producing from 237 hp (177 kW) to 250 PS (184 kW), and from 153 lbf·ft (207 N·m) to 22.2 kg·m (218 N·m) of torque depending on the target market.[6] The engine is mated to a six-speed manual transmission and Torsen limited slip differential. The S2000 achieved what Honda claimed as the "top level performance in the world" for a 2-liter naturally aspirated engine.

Features include independent double wishbone suspension, electrically-assisted steering and integrated roll hoops. 16 in (41 cm) wheels with Bridgestone Potenza S-02 tires were standard equipment. The compact and lightweight engine, mounted entirely behind the front axle, allows the S2000 to obtain a 50:50 front/rear weight distribution and lower rotational inertia. An electrically powered vinyl top with internal cloth lining was standard. Honda made available an aluminum hardtop for additional cost.
The 2001 model was largely unchanged, but Honda upgraded the radio and added a digital clock to the dashboard display. For the 2002 model year, suspension settings were revised and the plastic rear window was replaced by a glass unit incorporating an electric defroster. Other updates included slightly revised tail lamps, an upgraded radio, and a revised engine control unit.
The AP1 was manufactured up to 2003 at Honda's Takanezawa plant, alongside the Honda NSX and Honda Insight hybrid.[8] In 2004 production moved to the Suzuka plant.


Honda S2000 (AP2)
Production 2004–2009
Assembly Suzuka R&D Plant in Suzuka, Mie, Japan
The 2004 model year incorporated several revisions to the S2000 and was given the chassis designation of AP2 (note: this designation was never used in the UK although the improvements to the vehicle were applied). The 2004 model introduced newly designed 17 in (43 cm) wheels and Bridgestone RE-050 tires along with a retuned suspension to reduce oversteer. The spring rates and shock absorber damping were altered and the suspension geometry modified to improve stability by reducing toe-in changes under cornering loads. In the gearbox the brass synchronizers were replaced with carbon fiber. In addition, cosmetic changes were made to the exterior with new front and rear bumpers, revised headlight assemblies, new LED tail-lights, and oval-tipped exhausts.

2005 Honda S2000 AP2 showing revised rear end.
The AP2 also included the introduction of a larger version of the F20C for the North American market. Designated F22C1, the engine's stroke was lengthened, increasing its displacement to 2,157 cc (132 cu in). At the same time, the redline was reduced from 8,800 rpm to 8,000 rpm with a cutout at 8,200 rpm, mandated by the longer travel of the pistons. Peak torque increased 6% to 162 lbf·ft (220 N·m) at 6,500 rpm while power output was the same 237 hp (177 kW) at a lower 7,800 rpm. In conjunction with its introduction of the F22C1, Honda also changed the transmission gear ratios by shortening the first four gears and lengthening the last two. Another change was the inclusion of a clutch release delay valve.

2005 Honda S2000 AP2 red/black interior.

Honda F22C1 engine found in the S2000 AP2.

In 2006, the F22C1 engine replaced the F20C in the Japanese market; however, the F20C continued in all other world markets. The 2006 model introduced a drive by wire throttle, an electronic stability control system, new wheels, and one new exterior color, Laguna Blue Pearl. Interior changes included revised seats and additional stereo speakers integrated into the headrests.
The 2008 model year marked the first time the S2000 was offered in more than one trim level in the United States.[10] In addition to the base model, Honda offered a more track-oriented version of the S2000, distinguished by reduced weight, fewer amenities, and a claimed increase in performance. The S2000 Club Racer made its world debut at the New York International Auto Show on 4 April 2007.[11] Changes for the CR included a lower ratio steering rack, stiffer suspension and all-new Bridgestone Potenza RE070 tires, widened at the rear from 245/40R-17 to 255/40R-17. A revised body kit, composed of a redesigned front lip, rear bumper, and a large spoiler, were wind-tunnel tested and claimed to reduce the overall coefficient of lift by 70-80 %. The power folding soft top was removed and replaced with additional chassis bracing topped off with a tonneau cover, while the hard top, optional on other models, became a standard feature on the CR. Finally, in an effort to reduce weight and lower the center of gravity, the spare tire was omitted and air conditioning and stereo were offered only as options. Net weight savings without the additional hardtop was 90 pounds (41 kg) relative to the standard model. The engine in the S2000 CR was unchanged from the standard trim.

The 2008 Honda S2000 CR became available in the fall of 2007, with a base price of $36,300. Production volume of less than 2,000 units was expected. Redesigned five-spoke wheels were standard on all S2000s, with bright silver on the base model wheels and a gunmetal color on the CR wheels. All CR models were only available with yellow and black cloth interior. Honda continued both trim levels of S2000 unchanged for the 2009 model year. The price was increased to US$34,695 for the base trim and US$36,695 for the CR trim.
A variant of the CR, called the Type-S, was released in Japan. The Type-S retained the convertible soft top instead of the CR's aluminum hard-top, and used the standard S2000s Bridgestone RE050 tires instead of the CR's upgraded RE070s. The head designer of the S2000, Shigeru Uehara, stated that the CR was somewhere between the existing Type-S and what a supposed S2000 Type-R would have been like.
Production of the S2000 ceased in June 2009. Plans for an S2000 successor were scrapped in the aftermath of the automotive industry crisis of 2008. To commemorate the production run of the S2000, Honda offered a special variant called the S2000 Ultimate Edition for the European market, and a similar GT Edition 100 variant in the UK. These editions feature a removable hard top, Grand Prix White paint scheme, red leather interior, and numbered plaques.

No comments:

Post a Comment