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PCA.org : Home :
Panorama: Gallery: April 2008
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The Cisitalia Grand Prix car of 1946 was a radical concept featuring a 1.5-liter supercharged engine and all wheel drive. Though never raced by Porsche, the project supplied the funds to restart Porsche’s operations after the war. |
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Called “the tangible future on four wheels,” the technical tour de force 959 featured a hydraulically controlled variable slip clutch with a selection of four programs: wet, dry, ice/snow and full traction. |
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The 1989 964 Carrera 4 derived its AWD system from the 959. It featured 31% torque to the front wheels with 67% to the rear normally, although it could send more to the front in the event of rear wheel slip. The differentials could also be manually locked. |
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Joe Rusz captured this shot of the 993 Carrera 4; its all wheel drive system was lighter, more flexible and less expensive, featuring a viscous center clutch with silicone fluid. |
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The 993 Turbo used the 993 all wheel drive system, delivering up to 41% torque to the front wheels.
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The 996 version of all wheel drive saw the viscous clutch mounted in the front differential casing; it delivered between 5 and 40% of the car’s power to the front wheels.Judgment day—concours judges give the fine-tooth-comb treatment to this 968 cabriolet. |
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Featured in this month’s Panorama, the 997 AWD system adopts the magnetically operated 911 Turbo clutch and additionally offers the opportunity to pair the system with the new PDK transmission. |
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Check out the October issue for all the details on the new Carrera 4 and 4S, experience the “green hell” of the Nürburgring Nordschleife with Michael Cotton, and visit the Solitude circuit with Vic Elford. Also included is Bill Oursler’s story on Porsche’s ill-fated Indy effort, a report on PCA’s first Club Race at Virginia International Raceway, and from Allan Caldwell the latest information on anti-wear additives in modern oil formulations. Things you need to know—in the latest issue of Porsche Panorama.
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