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Wednesday, 23 October 2013

Mazda RX-7




The Mazda RX-7 is a sports car produced by the Japanese automaker Mazda from 1978 to 2002. The original RX-7 featured a 1,146 cc (69.9 cu in) twin-rotor Wankel rotary engine and a front-midship, rear-wheel drive layout. The RX-7 replaced the RX-3 (both were sold in Japan as the Savanna) and later replaced all other Mazda rotary-engine cars except the Cosmo.
The original RX-7 was a sports car with pop-up headlamps. The compact and lightweight Wankel rotary engine is situated slightly behind the front axle, a configuration marketed by Mazda as "front mid-engine". It was offered as a two-seat coupé, with optional "occasional" rear seats in Japan, Australia, the United States, and other parts of the world. The rear seats were initially marketed as a dealer-installed option for the North American markets.
The RX-7 made Car and Driver magazine's Ten Best list five times. 811,634 RX-7s were produced.[1]


Sunday, 13 October 2013

Mitsubishi Lancer Evolution



The Mitsubishi Lancer Evolution, also known as the Evo,[1] is a high-performance sports car manufactured by Mitsubishi Motors that is based on the Lancer. There have been ten official versions to date, and the designation of each model is most commonly a roman numeral. All use two litre, turbocharged engines and all-wheel drive systems.[2]
The Evolution was originally intended only for Japanese markets, but demand on the "grey import" market led the Evolution series to be offered through Ralliart dealer networks in the United Kingdom and in various European markets from around 1998. Mitsubishi decided to export the eighth generation Evolution to the United States in 2003 after witnessing the success Subaruhad in that market with their long-time direct rival, the Subaru Impreza WRX.[3]
Japanese-spec cars were limited by a gentlemen's agreement to advertise no more than 280 PS (206 kW; 276 hp), a mark already reached by Evolution IV. Therefore, each subsequent version has unofficially evolved above the advertised power figures, with the Japanese-spec Evolution IX reaching an alleged output of around 321 PS (236 kW; 317 hp). Various versions available in other markets, particularly the UK, have official power outputs up to 411 PS (302 kW; 405 hp). Today, the Evo is very popular among the street racing scene.
The tenth generation of the Lancer Evolution was launched in Japan 2007, and overseas markets in 2008.

Friday, 11 October 2013

SLS AMG Coupé Black Series (2013)



SLS AMG Coupé Black Series is a version of SLS AMG Coupé inspired by the racing version of the SLS AMG GT3. It includes increased engine power to 464 kW (622 hp) and 635 N·m (468 lb·ft), increased engine's redline to 8000 rpm, fully revised high-speed valve train with modified camshafts, adapted cam geometry and optimised bucket tappets featuring a special coating which is otherwise exclusive to racing vehicles, modification of the intake air ducting (derestriction and adaptation to the new maximum engine speed), adaptation of the engine application and increase in peak pressure.
The vehicle is 70 kg (150 lb) lighter than the standard model. This is accomplished by increased use of carbon fibre in body panels, mechanical components, and the spaceframe. Further, a switch from steel to titanium for the exhaust reduces weight by 13 kg (29 lb). The use of lithium-ion battery reduces weight by 8 kg (18 lb).
The AMG SPEEDSHIFT DCT 7-speed sports transmission is installed 10mm lower in order to achieve a lower centre of gravity for the vehicle and is braced against the body by gas-filled struts in order to avoid stress cycles. The transmission's "Sport plus" and "Manual" modes feature faster shifting speed. The downshifting throttle blips are more audible. The new temporary M mode enables the driver to activate manual mode without having to remove a hand from the steering wheel, by pressing the "up" or "down" shift paddle once.
Other features include electronically controlled AMG rear-axle differential lock with a shorter rear-axle ratio, new AMG RIDE CONTROL performance suspension (tauter basic tuning and electronically controlled two-stage damping, coil-over spring retainers to enable adjustment of wheel loads, elastokinematics 50 / 42% more rigid (front/rear axle), track width increased by 20 / 24 millimetres (front/rear axle), new wheel carriers on front axle and new front stabiliser tuning, matte black with high-sheen AMG 10-spoke light-alloy wheels in particularly light forged design with optimised strength (10x19-inch front, 12x20-inch rear), Michelin Pilot Sport Cup 2 sports tyres (275/35 R 19 front, 325/30 R 20 rear), AMG speed-sensitive steering with newly defined power steering characteristic), AMG ceramic brake discs (402 x 39 millimetres front and 360 x 32 millimetres rear) with increased hardness, wide flared wings with an added width of 13 mm (front) and 26 mm (rear) on each side, darkened headlamps and black surrounds for the rear lights, front apron and rear apron with diffusor along with side sill panels in Black Series-specific design (carbon fibre-reinforced plastic front splitter, carbon inserts in the side sills and the rear apron made of carbon fibre, enlarged air intakes with carbon-fibre flics), carbon-fibre bonnet with central air outlet, Alcantara black or Alcantara black/red interior AMG Performance steering wheel with Alcantara upholstery, metal bezel features a high-gloss black paint finish to match the high-gloss black surrounds of the air vents, Alcantara strip in anthracite across the entire width of dashboard leather with red contrasting stitching in the leather, designo leather and Alcantara upholstery (including bottom section of the dashboard, door centre panels and on the AMG sports bucket seats in Alcantara), deleted COMAND APS multimedia system replaced by a carbon-fibre trim element (COMAND APS is optionally available), AMG DRIVE UNIT, red seat belts and red contrasting stitching on the AMG sports bucket seats, the upper and lower section of the dashboard and the door panelling; floor mats with red edging, optional Bang & Olufsen BeoSound AMG surround sound system.
Optional AMG Aerodynamics package includes a fixed adjustable carbon-fibre rear aerofoil in the style of the SLS AMG GT3, rear aerofoil braced by aluminium elements on a special insert on the boot lid, additional carbon-fibre flics on the front apron. New body colour choice include AMG solar beam (total 7, including matte paint designo magno alanite grey)
Other options include AMG carbon-fibre exterior mirror, AMG carbon-fibre engine cover, AMG Interior Carbon-Fibre package, AMG infotainment system (incl. COMAND APS, AMG Performance Media and backup camera), Media Interface.
The vehicle was unveiled in 2012 LA Auto Show,[54][55] with market launch set to begin in June 2013.[56]
US model set to go on sale on summer 2013 as 2014 model year vehicle.[57]

Sunday, 6 October 2013

2JZ-GTE


The 2JZ-GTE is an inline-layout, six-cylinder, belt-driven dual-overhead camshaft, air-intercooled, twin-turbocharged, cast-iron block, aluminium cylinder headed engine designed and manufactured by Toyota Motor Corporation that was produced from 1991 until 2002 in Japan. Development and evolution of the engine was, principally, a response to Nissan's relatively new and then-successfulRB26DETT engine[citation needed] which had achieved palpable success in FIA Group A and Group N touring car championships,
For all road car applications, two gearboxes were available for the engine:
  • Toyota A341E 4-speed automatic
  • Toyota V160 and V161 6-speed manual (jointly developed with Getrag as the Type 233)
The 2JZ-GTE originally powered the Toyota Aristo V (JZS147) in 1991 before becoming Toyota's flagship performance engine in theToyota Supra RZ (JZA80). Its mechanical basis was the existing 2JZ-GE, but differed in its use of sequential twin turbochargers and an air-to-air side-mounted intercooler. The engine block, crankshaft, and connecting rods of the Supra's 2JZ-GE and 2JZ-GTE are the same, with notable differences being that the 2JZ-GTE has recessed piston tops (giving a lower compression ratio), oil spray nozzles to aid in cooling the pistons and a different head (redesigned inlet/exhaust ports, cams and valves). However, other 2JZ-GE equipped models (Aristo, Altezza, Mark II) share a different part number for connecting rods. Toyota's VVT-i variable valve timing technology was added to the engine beginning in September 1997, whence it phased out the original engine. Consequently, maximum torque and horsepower was raised for engines selling in all markets.
The addition of twin turbochargers, jointly developed by Toyota with Hitachi, in sequential configuration had raised its commercially cited output from 230 PS (169 kW; 227 hp) to the contemporary industry maximum of 280 PS (206 kW; 276 hp) at 5600 rpm. In its first appearance, torque was advertised as 44.3 kgm (435 Nm, 320 lbft) at 4000 rpm to be later recited as 46.0 kgm (451 Nm, 333 lbft) with the introduction VVT-i in production year 1997. The mutually agreed, industry-wide output ceiling was enforced by Japan's now-defunctGentlemen's Agreement exclusively between Japanese automakers selling to the Japanese domestic market. Engine power in the North American and European markets, as documented by Toyota, was increased to 325 PS (239 kW; 321 hp) at 5600 rpm.[4]
The export version of the 2JZ-GTE achieved its higher power output with the use of newer stainless steel turbochargers (ceramic for Japanese models), revised camshafts, and larger injectors (550 cc/min for export, 440 cc/min for Japanese). The mechanical similarities between the Japanese-specification CT20 turbine and export-specification CT12Bturbine allow interchangeability of the exhaust-side propeller shaft. Additionally, the export-exclusive CT12B turbine received more durable turbine housings and stainless steel turbine and impeller fins. Multiple variants of the Japanese CT20 turbine exist discretely, which are identified with the BR, and A part number suffixes (e.g.: CT20A).
Applications:
  • Toyota Aristo JZS147 (Japan-only)
  • Toyota Aristo V300 JZS161 (Japan-only)
  • Toyota Supra RZ/Turbo JZA80

Wednesday, 2 October 2013

Toyota JZ engine


The 1JZ-GTE employs twin CT12A turbochargers arranged in parallel and blowing through a side-mount or front mount air-to-air intercooler . With an 8.5:1 static compression ratio, the factory quoted power and torque outputs are 280 metric horsepower (210 kW) at 6200 rpm and 363 newton metres (268 lbf·ft) at 4800 rpm respectively. The bore and stroke are the same as for the 1JZ-GE: 86 mm (3.39 in) bore × 71.5 mm (2.81 in) stroke. Yamaha may have had a hand in the development or production of these motors (possibly the head design), hence the Yamaha badging on certain parts of the motor, such as the cam gear cover. In 1991, the 1JZ-GTE was slotted into the all-new Soarer GT.
The early generation 1JZ-GTEs combined the inherent smoothness of an inline 6-cylinder engine with the revving capacity of its short stroke and early power delivery of its small, ceramic wheeled turbochargers. The ceramic turbine wheels are prone to delamination in the setting of high impeller rpm and local temperature conditions, usually a result of higher boost. The first generation 1JZs were even more prone to turbo failure due to there being a faulty one-way valve on the head, specifically on the intake cam cover causing blow-by gases to go into the intake manifold. On the exhaust side, a decent amount of oil vapor flows into the turbos causing premature wear on the seals. The later second generation engines had this problem fixed and in Japan there was actually a recall in order to repair the first generation engines, though that does not apply to 1JZs imported to other countries. The fix is simple, and involves replacement of the PCV valve (2JZ); all parts are available through Toyota.
The third generation of the 1JZ-GTE was introduced around 1996, still as a 2.5-litre turbo, but with Toyota's BEAMS architecture.[2]This included a reworked head, newly developed continuously variable valve timing mechanism (VVT-i), modified water jackets for improved cylinder cooling and newly developed shims with a titanium nitride coating for reduced cam friction.[3] The turbo setup changed from parallel twin turbo (CT12x2) to a single turbo (CT 15B). The adoption of VVT-i and the improved cylinder cooling allowed the compression ratio to be increased from 8.5:1 to 9.0:1. Even though the official power figures remained at 280 metric horsepower (210 kW) at 6200 rpm, torque was increased by 20Nm to 379 newton metres (280 lbf·ft) at 2400 rpm. These improvements resulted in increased engine efficiency that reduced fuel consumption by 10%. The adoption of a much higher efficiency single turbocharger than the twins as well as different manifold and exhaust ports were responsible for most of the 50% torque increase at low engine speeds . This engine was used primarily in Toyota's X chassis cars (Chaser, Mark II, Cresta, Verossa), the Crown Athlete V (JZS170) and in the later JZZ30 Soarer, as the JZA70 Supra was long discontinued by this time.

Monday, 30 September 2013

Chevrolet Corvette (C7)







The Chevrolet Corvette (C7) is a sports car being produced by the Chevrolet division of General Motors introduced for the 2014 model year. It is the seventh generation Chevrolet Corvette and the first to bear the Corvette Stingray name since the 1976 third generation model. It is expected to start delivery in the 3rd quarter of 2013. This new version will be available with right-hand drive in the UK market for the first time since Corvette was introduced in 1953.[3]









Fastest Cars in The World

1: Hennessey Venom GT, 260 mph (418 km/h), 0-60 mph in 2.5 seconds.

Our fastest car has a 6.2-liter LS9 Turbocharged V8 Twin Turbo V8 Engine producing 1200 hp, with a price tag of $950,000. The Venom GT has yet to be tested and proven, but could hit a top speed of 275 mph. This might just be the Veyron Super Sport’s closest challenger!.  This is the fastest car in the world after Guinness book of world record had declared that Bugatti veyron speed were manipulated. Thus pushing down Bugatti veyron to second rank in our list of top 10 fastest cars

2: Koenigsegg Agera R, 260 mph (418 km/h), 0-60 mph in 2.9 seconds.

5.0-liter V8 Engine with twin turbo’s, housing 1099 hp. Base price is $1,600,000. If you’re into snow sports, the Agera R can be fitted with a Ski Box as well as winter tires. While the Agera R has a massive theoretical top speed, the current tested top speed is 260 mph. Expect this snow car to be the Bugatti’s arch enemy for the next 5 years.This is the second in top 10 fastest cars.


3: Bugatti Veyron EB, 16.4 258mph 

(415.2)km/h

  Boasting a maximum speed of more than 400 km per hour, the Veyron is unmatched in the super sports category. It offers a total of 736 kW (1,001 HP), and its ample power reserves even at high speeds are the fabric of dreams for luxury-class limousines: for a constant speed of 250 km/h. The Veyron only needs 270-280 HP. This means that the seven-gear clutch transmission works with a torque of up to 1,250 Newton meters. The Electronic Stability Program ensures the necessary flexibility and maneuverability at any speed. The Veyron reaches velocities that would literally lift the car off the ground. If it were not for its ingenious aerodynamics, which keeps it firmly on the road even at full speed. Adjusting the back spoiler, reducing ground clearance, opening and closing the lids – it all adds to the perfect balance between propulsion and down force. Such a super sports car may not seem to be brought to a halt easily, but the Veyron’s ceramic brakes slow it down faster than it can accelerate. While it takes this exceptional car only 2.5 seconds to go from 0 to 100 km/h, it needs even less time – a mere 2.3 seconds – to come to a standstill from 100 (reference point). To cut the risk of injuries in accidents, Bugatti had a Formula 1 safety concept adapted for the Veyron. All these technical details combine to make the Veyron a truly exceptional super sports car. This is the third fastest cars in top 10 fastest cars list.

4: Saleen S7 Twin-Turbo, 248 mph (399 km/h), 0-60 in 2.8 seconds.

Twin Turbo All Aluminum V8 Engine with 750 hp, base price is $555,000. Smooth and bad-ass. It will make you want to show it off non-stop. This is the fourth in top 10 fastest cars.


5: Koenigsegg CCX, 245 mph (394 km/h), 0-60 in 3.2 secs.

90 Degree V8 Engine 806 hp, base price is $545,568. Made in Sweden, it is the older brother of the Agera R, only losing to 4 other supercars in the world. This is the fifth in top 10 fastest cars.



6. McLaren F1: 240 mph (386 km/h), 0-60 in 3.2 seconds.

BMW S70/2 60 Degree V12 Engine with 627 hp, base price is $970,000. The fastest car in the 20th century with doors that looks like bat wings. Maybe Batman needs to order one and paint it black.


7: Zenvo ST1: 233 mph (374 km/h), 0-60 in 2.9 seconds.

Twin-Charged 7.0 liter V8 Engine forging 1,104 hp. Base price: $1,225,000. The first Supercar from Zenvo Automotive, a Danish sports car company in pursuit of speed and perfection. This 100% Danish made supercar is limited to 15 units and the company even promised “flying doctors” to keep your baby functioning.



8: Gumpert Apollo: 225 mph (362 km/h), 0-60 in 3.0 seconds.

4.2 liter V8 Engine that houses 650 hp. Base price: $450,000. Gumpert claims that the Apollo was designed such that it could drive upside-down in a tunnel with speeds at 190 mph or above. Of course, no one has tested this yet.