911 Carrera 4 Type 997 (2005 - 2008)Next
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911 Carrera 4 Type 997 (2008 - ...)Next
Figure: Porsche 911 Carrera 4 front differential (model year unknown) (7KB)
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permanently locked multi-plate hydraulic clutch in the center. Unlocked only if turning at low speed, for example while parking. Torque distribution in this vehicle is adjusted even before wheelspin occurs. Gathering information from numerous sensors (i.e. g force sensor, accelerator pedal position, speed, and even turbo pressure) while accelerating, computer changes normal 40front/60back torque split, sending up yo 80% to the rear wheels, even if all four wheels are rotating with the same speed.
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Full-time all wheel drive. 38/62 torque split under normal conditions. Multiplate clutch lockable center differential. (?)
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911 Turbo (2007)Top
Figure: Porsche 911 Turbo (151KB)
Figure: Porsche 911 Turbo front differential and multiplate clutch (178KB)
Figure: Porsche 911 Turbo multiplate clutch (137KB)
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