911 Carrera 4 Type 964 (1988 - 1993)(Edit)  
Full-time all wheel drive system with torque distribution 31/69% front to rear. Three differential system using computer-controlled hydraulic clutches (Porsche Dynamische Allrad Steuerung or PDAS for short) to help distribute power to the four wheels.
Figure: porsche 911 carrera 4 964  Figure: Porsche 911 Carrera 4 964 center differential with a multi-plate differential locking clutch  Figure: porsche 911 carrera 4 964 gearbox  Figure: porsche 911 carrera 4 964 gearbox rear differential  Figure: porsche 911 carrera 4 964 rear drive shaft  Figure: porsche 911 carrera 4 964 distributor housing  Figure: porsche 911 carrera 4 964 central tube  Figure: porsche 911 carrera 4 964 front differential housing  Figure: porsche 911 carrera 4 964 front differential  Figure: porsche 911 carrera 4 964 front drive shaft   Have you seen a better description of Porsche 911 Carrera 4 Type 964 (1988 - 1993) in a paper magazine? Can you please scan it or take a photo and send it to  ?
911 Carrera 4 Type 993 (1994 - 1997)(Edit)
Automatic all wheel drive. Mechanical limited slip at rear, viscous coupling in the center.
Figure: porsche 911 carrera 4s 993  Figure: porsche 911 carrera 4s 993 transmission  Figure: porsche 911 carrera 4s 993 rear drive shaft  Figure: porsche 911 carrera 4s 993 viscous coupling  Figure: porsche 911 carrera 4s 993 central tube  Figure: porsche 911 carrera 4s 993 front differential  Figure: porsche 911 carrera 4s 993 front drive shaft  Have you seen a better description of Porsche 911 Carrera 4 Type 993 (1994 - 1997) on the web? Please send us the link to or post it in a comment below! 911 Carrera 4 Type 996 (2001 - 2005)(Edit)
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Figure: porsche 911 carrera 4 996  Figure: porsche 911 carrera 4 996 front drive shaft  Figure: porsche 911 carrera 4 996 front axle  Figure: porsche 911 carrera 4 996 front axle and cardan shaft  Figure: porsche 911 carrera 4 996 limited slip differential  Figure: porsche 911 carrera 4 996 rear differential  Figure: porsche 911 carrera 4 996 rear drive shaft  Have you seen a better description of Porsche 911 Carrera 4 Type 996 (2001 - 2005) in a paper magazine? Can you please scan it or take a photo and send it to ? 911 Carrera 4 Type 997 (2008 - ...)(Edit)
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Figure: Porsche 911 Carrera 4 front differential (model year unknown)  Have you seen a better description of Porsche 911 Carrera 4 Type 997 (2008 - ...) in a paper magazine? Can you please scan it or take a photo and send it to ?
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.
Figure: porsche 959  Do you own Porsche 959? Can you please make a photo of the car's 4x4 transmission, switches, dashboard lights, etc. and send it to ? Cayenne(Edit)
Full-time all wheel drive. 38/62 torque split under normal conditions. Multiplate clutch lockable center differential. (?)
Figure: porsche cayenne first generation  Have you seen a better description of Porsche Cayenne on the web? Please send us the link to or post it in a comment below! 911 Turbo (2007)(Edit)
Figure: Porsche 911 Turbo  Figure: Porsche 911 Turbo front differential and multiplate clutch  Figure: Porsche 911 Turbo multiplate clutch  Do you think this information about Porsche 911 Turbo (2007) is incorrect? Please send us what you know to or leave a comment below.
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