Porsche

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 (881KB)

Figure: Porsche 911 Carrera 4 964 center differential with a multi-plate differential locking clutch (82KB)

Figure: porsche 911 carrera 4 964 gearbox (136KB)

Figure: porsche 911 carrera 4 964 gearbox rear differential (159KB)

Figure: porsche 911 carrera 4 964 rear drive shaft (95KB)

Figure: porsche 911 carrera 4 964 distributor housing (140KB)

Figure: porsche 911 carrera 4 964 central tube (106KB)

Figure: porsche 911 carrera 4 964 front differential housing (155KB)

Figure: porsche 911 carrera 4 964 front differential (76KB)

Figure: porsche 911 carrera 4 964 front drive shaft (105KB)

Do you think this information about Porsche 911 Carrera 4 Type 964 (1988 - 1993) is incorrect? Please send us what you know to or leave a comment below.

Automatic all wheel drive. Mechanical limited slip at rear, viscous coupling in the center.

Figure: porsche 911 carrera 4s 993 (720KB)

Figure: porsche 911 carrera 4s 993 transmission (717KB)

Figure: porsche 911 carrera 4s 993 rear drive shaft (135KB)

Figure: porsche 911 carrera 4s 993 viscous coupling (116KB)

Figure: porsche 911 carrera 4s 993 central tube (74KB)

Figure: porsche 911 carrera 4s 993 front differential (91KB)

Figure: porsche 911 carrera 4s 993 front drive shaft (103KB)

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Do you own Porsche 911 Carrera 4 Type 996 (1998 - 2001)? Can you please make a photo of the car's 4x4 transmission, switches, dashboard lights, etc. and send it to ?

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Figure: porsche 911 carrera 4 996 (904KB)

Figure: porsche 911 carrera 4 996 front drive shaft (54KB)

Figure: porsche 911 carrera 4 996 front axle (48KB)

Figure: porsche 911 carrera 4 996 front axle and cardan shaft (54KB)

Figure: porsche 911 carrera 4 996 limited slip differential (30KB)

Figure: porsche 911 carrera 4 996 rear differential (45KB)

Figure: porsche 911 carrera 4 996 rear drive shaft (64KB)

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Have you seen a better description of Porsche 911 Carrera 4 Type 997 (2005 - 2008) in a paper magazine? Can you please scan it or take a photo and send it to ?

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Figure: Porsche 911 Carrera 4 front differential (model year unknown) (7KB)

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 (801KB)

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Full-time all wheel drive. 38/62 torque split under normal conditions. Multiplate clutch lockable center differential. (?)

Figure: porsche cayenne first generation (400KB)

Do you think this information about Porsche Cayenne is incomplete? Please send us what you know to or leave a comment below.

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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