C4S question

[lawtoni]

Hi Guys,

I have recently purchased a mint condition seal grey 996 C4S, I had a question about the 4 wheel drive, which the manual hasn't helped with.

Is this a permanent 4 wheel drive or does it have a clever system to direct more power towards whichever set of wheels, or even wheel needs it?

IE when I am pottling doen the A1 in the morning at 50mph in a straight line, am I in 4 wheel drive, or 2 wheel, or a bit of both!?!?

I'm a hoover for mechanical knowledge so please feel free to been as technical as you like and I'll do my best to keep up!

Many thanks guys,

Paul

[Magic919]

There's nothing clever about it, sadly.. Look up viscous coupling. Sits between the rear and the front. It is reckoned to be 5% to front, minimum. It's more like not-fully-RWD than some kind of AWD.

Later 997 cars have a clever system from what I gather.

[doneitnow]

When I was looking I was told it was something like 20% directed to the front wheels.

[Magic919]

If you like to learn about the car, buy this book. http://www.amazon.co.uk/Porsche-996-Supreme-Essent...

[monthefish]

doneitnow said:

When I was looking I was told it was something like 20% directed to the front wheels.

5% (rising to 40% when conditions dictate)




Excellent thread here for more information.

[hendy]

Bit more info here confirming 5-40%

[Callughan]

5/40 correct unlike 997 which is more advanced.