Why don't most Porsches have Limited Slip Differentials?

[Average Jae]

It would only get split evenly if you had a locking differential. Most limited slips are between 25% - 80% lockup, meaning it CAN send anywhere from 25 - 80% of the torque to the non-slipping wheel. Both wheels will still spin - they always will, but with a limited slip, it'll take torque from the one wheel and give it to the other. It doesnt SLOW the wheel, just sends engine power to the other one.

i guess the term split evenly isn't the right one to use. in a dropped clutch start w/ 2 strips of rubber, power goes back and forth btw the two wheels right? (so i guess i meant balance when i said split.) i get what you are saying eric, but during such start, power would be diverted to one wheel, with more traction, then to the other as one w/ too much torque would be spinning out. since the car is trying its best to put all the power to the wheel w/ most traction. (that makes logical sense to me, now whether it's acutally like that in practice, is totally beyond me.)

you mentioned 25-80% of the torque. but in some situations couldn't one wheel get all the avail power? as in awd situation on icy road? i thought i read that when boasting awd systems for one car or another.. maybe new x-drive? can't remember.

 

[Default]

All we're doing is going in one huge circle, this has become extremely confusing.

 

[Chesty Bonds]

you mentioned 25-80% of the torque. but in some situations couldn't one wheel get all the avail power?

The whole point of an LSD is that it prevents one wheel from frying away all of the power. This is why they partially lock under power.

 

[Default]

HA! I figured it out. Alright, Porsche has three ways you can configure the new Carrera and Carrera S. There is the Standard suspension, in which the ride height is normal, there is the PASM chassis, in which you can select a -10mm drop from normal suspension, and there is a Sport suspension option that you can order that lowers the suspension 20mm at all times and includes an LSD. However, the 20mm lowered chassis cannot be ordered in the US because of ridiculous road regulations that we all have to put up with. That's why whenever I looked for LSDs on Porsches on their US website and all these other US sites I could never find information. If you look on the British site they have this option:

http://content3.eu.porsche.com/prod...ro_sport_chassis?OpenDocument&sc=carreras.nsf

I'm so glad I finally discovered this, I knew that the finest sports cars in the world had to be offered with an LSD, otherwise it would make no sense.

 

[epj3]

HA! I figured it out. Alright, Porsche has three ways you can configure the new Carrera and Carrera S. There is the Standard suspension, in which the ride height is normal, there is the PASM chassis, in which you can select a -10mm drop from normal suspension, and there is a Sport suspension option that you can order that lowers the suspension 20mm at all times and includes an LSD. However, the 20mm lowered chassis cannot be ordered in the US because of ridiculous road regulations that we all have to put up with. That's why whenever I looked for LSDs on Porsches on their US website and all these other US sites I could never find information. If you look on the British site they have this option:

http://content3.eu.porsche.com/prod...ro_sport_chassis?OpenDocument&sc=carreras.nsf

I'm so glad I finally discovered this, I knew that the finest sports cars in the world had to be offered with an LSD, otherwise it would make no sense.

I'm moving to europe.

 

[Default]

I'm moving to europe.

Me too.