Do the boxsters come with limited slip?

[Adam]

I gotha. Yeah, in my opinion calling anything that brakes the slipping wheel a limited slip is a stretch.

[CJ_Boxster]

Originally Posted by Adam

I gotha. Yeah, in my opinion calling anything that brakes the slipping wheel a limited slip is a stretch.

Yeah porsche should have worded that option differently.... just like how ebay sellers selling knock off stuff always add the word "Style" to the end of the discription in tiny print...

example: TWINTURBO style FRONT BUMPER

[Paul]

Originally Posted by Adam

I gotha. Yeah, in my opinion calling anything that brakes the slipping wheel a limited slip is a stretch.

But, that's what the Porsche differential clutch based LSD does.....

[Adam]

Originally Posted by Paul

But, that's what the Porsche differential clutch based LSD does.....

No a real limited slip doesn't brake anything. Most use a clutch, a gear or fluid inside the diff to transfer torque from the slipping wheel to the non slipping wheel.

[70Sixter]

I think they are doing a ltd slip group buy over at CaymanClub.com.

[Paul]

Originally Posted by Adam

No a real limited slip doesn't brake anything. Most use a clutch, a gear or fluid inside the diff to transfer torque from the slipping wheel to the non slipping wheel.

Porsche as I stated in my post uses clutches to brake the spinning wheel and transfer torque to the other wheel.

[Paul]

from: http://auto.howstuffworks.com/differential4.htm



Clutch-type Limited Slip Differential
The clutch-type LSD is probably the most common version of the limited slip differential.


Image courtesy Eaton Automotive Group's Torque Control Products Division



This type of LSD has all of the same components as an open differential, but it adds a spring pack and a set of clutches. Some of these have a cone clutch that is just like the synchronizers in a manual transmission.

The spring pack pushes the side gears against the clutches, which are attached to the cage. Both side gears spin with the cage when both wheels are moving at the same speed, and the clutches aren't really needed -- the only time the clutches step in is when something happens to make one wheel spin faster than the other, as in a turn. The clutches fight this behavior, wanting both wheels to go the same speed. If one wheel wants to spin faster than the other, it must first overpower the clutch. The stiffness of the springs combined with the friction of the clutch determine how much torque it takes to overpower it.

Getting back to the situation in which one drive wheel is on the ice and the other one has good traction: With this limited slip differential, even though the wheel on the ice is not able to transmit much torque to the ground, the other wheel will still get the torque it needs to move. The torque supplied to the wheel not on the ice is equal to the amount of torque it takes to overpower the clutches. The result is that you can move forward, although still not with the full power of your car.

[blue2000s]

Originally Posted by Paul

Porsche as I stated in my post uses clutches to brake the spinning wheel and transfer torque to the other wheel.

Not on the Boxster.

[Paul]

Agreed, I was speaking of real Porsche LSDs like the one in my 931.