Mercedes-Benz CLK55 AMG
The Mercedes-Benz CLK-Class is a series of mid-size luxury coupés and convertibles produced by German car manufacturer Mercedes-Benz in two generations. Although its design and styling was derived from the E-Class, the mechanical underpinnings were based on the smaller C-Class, i.e. respectively based on the W202 and W203 platforms of the C-Class. It was positioned below the Mercedes-Benz CL-Class and SL-Class, but above the SLK-Class. The CLK name derives from the German Coupé Leicht Kompakt (or Kurz), translated Coupé-Light-Short. In 2009 Mercedes ceased to use the CLK designation moving the segment designation back to E-Class Coupe/Convertible instead, as it had called this specific line of its vehicles previously before the CLK moniker was introduced in the 1990s.
The first-generation C208/A208 CLK was introduced in 1997, and was based on the W202 Mercedes-Benz C-Class launched three years earlier. The C208 coupé was replaced by the C209 CLK-Class in 2002, although the convertible remained in production until 2003 when replaced by the A209 CLK.
History
The CLK introduced a new market niche for Mercedes-Benz. Although the C208 used components from the E-Class (W210) and had a specification level higher than the E-Class, it was in fact based on the less expensive C-Class (W202) platform. Two versions were initially available: the four-cylinder CLK 200 (136 PS (100 kW; 134 bhp)) and four-cylinder supercharged and CLK 230 Kompressor 193-197 PS (142-145 kW; 190-194 bhp).
The CLK 320 Coupé was introduced in the 1997 model year, powered by a 218 PS (160 kW; 215 bhp) 3.2 L V6 engine. The CLK GTR FIA GT1 racing car appeared in 1998, powered by a 5.9 L V12 engine; 25 road-going CLK GTRs were made. The CLK 320 Cabriolet and the 279 PS (205 kW; 275 bhp), 4.3 L V8-powered CLK 430 appeared in 1999. All models were available in both coupé and convertible form. In Europe, the supercharged 200 Kompressor was also available, reaching impressive 193bhp, thanks to euro2 permissive emission specs. In late 1999 for the 2000 model year, a facelift was launched which incorporated, among others, a revised instrument cluster with a bigger multifunction display, steering wheel with controls for the multifunction display and radio, Tiptronic automatic gearbox, revised bumpers and new side skirts and side-view mirror-mounted turn signals.
The high-performance CLK 55 AMG, which was introduced first in Europe in 2000, was powered by the 372 PS (274 kW; 367 bhp) "M113" 5.4 L V8 engine; the CLK 55 AMG Cabriolet was launched in 2002, the last year of this body style.
CLK 55 AMG
The CLK AMG is powered by a hand-assembled 5.4-liter V8 engine. The hardware list includes super-stiff forged billet steel crankshaft, forged, weight-matched connecting rods and pistons, lightweight AMG-specific chain-driven single overhead camshafts V8 (one cam per cyl bank) with two intake and one exhaust valves per cylinder, as well as 8 coil packs and 16 spark plugs (two spark plugs per cyl). Its bore and stroke are 97mm x 92mm. The dual-resonance intake manifold with tuned runners helps create optimized torque and power outputs by taking advantage of two resonant frequencies to increase performance. The engine features a high compression ratio of 10.5:1. All of these advanced technologies help deliver a healthy 342 hp (255 kW) and 376 lb·ft (510 N·m) of torque.
Transmission
The five-speed automatic transmission is adapted from the gearbox used in the V-12 S-class models, because that gearbox can take the torque. It is fully adaptive and electronically controlled, and is a stronger unit than that of the CLK430. Also a larger four-bolt driveshaft that's four inches in diameter connects to a reinforced rear differential to keep all the extra power under control. Standard traction control keeps wheelspin to a minimum, while its Electronic Stability Program (ESP) keeps the CLK on its intended path.
Handling
The standard CLK chassis is used, and while the current version is not based on the new C-Class platform, the AMG version of the CLK offers some special undercarriage components. The four-wheel independent suspension is basically the same as the lesser CLK versions, but AMG fits higher-rated springs, tighter shock valving, larger diameter anti-roll bars and stiffer suspension bushings. The resulting firmer, more controlled ride is made even tighter by its high-performance ZR-rated low-profile tires. The brakes have been enhanced as well. The huge four-wheel discs are larger and thicker than the other CLKs, and the rear discs are specially vented to enhance cooling. An anti-lock braking system is standard, while Brake Assist applies full braking force in panic stop faster than a driver could. It rides on AMG Monoblock alloy wheels, 7.5" front and 8.5" rear, shod with 225/45ZR17 and 245/40ZR17 Michelin Pilot Sport tires.
This article is licensed under the GNU Free Documentation License. It uses material from Wikipedia.
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