Friday, March 29, 2013

Corvette Callaway Speedster 1991

As a specialist in automotive turbocharged (Reeves Callaway) created the massive and powerful ZR-1, two-turbine model Sledgehammer, car version Corvette, it was hard to imagine that anyone could be made ​​even more powerful monster. However it was not long, and the light appeared Corvette Speedster.




















The upper part of the machine that is like an ax cut off the roof, very confused shoppers, and a wide rear window and uncomfortable headrests disturb the driver to look back, but it should be noted that the creators of the car the least thought about the practical side of things. They wanted acceleration, and succeeded in what - the car accelerated to a stunning speed of 100 km / h in just 12.1 seconds. Callaway developed the new suspension for the car, which improves its handling. And if we take into account the powerful, enhanced braking system and excellent adhesion to the road car, it immediately becomes clear why it is worth big money.

1985 Reeves Callaway sets two turbochargers on the car Alfa Romeo GTV6 and the power it brings the engine up to 230 hp resulting in a top speed increases to 225 km / h Company Chevrolet - delighted with the venture Callaway and invites him to develop a version of the car dvuhturbiny Corvette. As a base for their features, equipped with turbo cars, Callaway uses basic model C4 Corvette.


1988 Callaway creates monstrous power version Corvette, the car Sledgehammer, equipped with an engine capacity of 880 hp capable of a maximum speed of 360 km / h To improve the aerodynamic properties of the machine was brought French-born Canadian designer Paul Deutschman (Paul Deutschman). Corvette Callaway also participate in prestigious races such as Le Mans.

1991 The first car Speedster appears at the auto show in Los Angeles. Incidentally, this was also the first car, called Callaway. It causes a furor that Callaway decides to make his special mark: issued only 50 such cars.


ENGINE


Callaway almost completely redid the base V-shaped 8-cylinder engine from the car Corvette L98 volume of 5700 cm3, inserting a stronger crankshaft, not made of cast iron and wrought iron. The compression ratio was reduced to 7.5:1 by using Cosworth pistons and Mahle, allowing effectively twin turbo RotoMaster. Head milled aluminum and is equipped stronger valve springs, valves themselves were made of stainless steel. Standard electronic fuel injection recalibrated for faster acceleration.





Entering into the ninties, Reeves Callaway provided the best solutions to turbocharge forth generation Corvettes. What Callway was so good at doing was taking 1400 new peices, from 300 suppliers, and assembling Twin Turbo Corvettes. He even convinced Chevrolet to add this upgrade as the option ''RPO B2K'' to their work order. This meant Callways were ordered from twenty different dealers across America and as a result hundreds received the Twin Turbo treatment. Callaway's connecticut workshop farmed out one to two per day.
At the 1991 LA Auto Show, Callaway introduced a Speedster which was his most outrageous offering. On the stand stood a bright green ZR1, which had a severely chopped windscreen, no side mirrors, eighteen inch wheels and a vibrant blue leather interior stitched purposefully from Germany.
Nothing about Callaway's Speedster was reserved, and this is especially true when investigating the specification. The car had 450 horsepower. This figure was a tremendous amount for 1991, and was one of the most powerful accepted by the American EPA for pollution standards. To create such a car, Callaway had to tackle several problems, and the first was fitting the new twin turbos, complex engine headers and airbox in an already cluttered engine bay.
Adding turbos to the existing GM engine meant Callaway had to develop several new systems. These included new engine mototronics, fuel injection system, and an exhaust system including custom headers and catalytic converters. One of the most complex tasks was redesigning the front crossmember to accommodate an airbox to feed the engine intake. The engines themselves were blueprinted, magnafluxed, fitted with Cosworth pistons and forged cranks alongside NASCAR units at Ed Lanier's shop.
Beyond turbocharging, Speedsters received a competition suspension with coil overs, adjustable shocks, a Brembo brake package and massive 3 piece Oz racing wheels. At the time, the 17 inch wheels were the largest to fit on a Corvette, and Callaway even had prototype 18 inch wheels fitted to chassis #000. Bridgestone provded run-flat tires, which was an emerging technology, and one that freed the Speedster from they necessary spare wheel.
Outwards the car was styled by Paul Deutschman who made a very unique carbon fiber body having special air inlets and outlets for intercoolers. As a unique feature, twin power bulges met each headrest, and helped divide up the rear section of the Speedster. As a result of the integrated rear section, the Speedster remained permanently topless, a configuration which was suited for the California weather in which this car debuted.
Despite and an initial planned production of 50 examples, only 12 Speedsters were manufactured.

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