SVX Torque Split -Front/Rear

[mile-hi-bri]

Quick question - food for thought...
How do the 5/6 spd sticks control 'torque split'? I don't remember reading about this in previous posts.
Do the sticks have clutch packs like the 4eat? Or does it use a viscous diff? Does the 'torque split' vary?
Does that give the 4eat an 'advantage' over the sticks?
Just curious! Feedback?
Thanks, mile-hi-bri

[mbtoloczko]

Hi Brian, the standard WRX manual trannys use a standard 50:50 differential with a viscous coupler. If the viscous coupler detects a speed difference between the front and rear drivelines, then it more strongly couples the front and rear. The system is designed to try its best to maintain a 50:50 split while allowing some differential rpm in the front and rear drivelines.

The WRX STi 6MT has a center diff with a variable torque split. The torque split can be varied by a computer, or it can be manually controlled. I don't know for sure, but I imagine the diff also has a viscous coupler.

My feeling is that the SVX 4eat has a more desireable power distribution scheme. I just would have preferred that the rear wheels be the ones that are always driven, and the torque to the front be variable. This is how its done on Skylines.

[Andy]

Originally posted by mbtoloczko
My feeling is that the SVX 4eat has a more desireable power distribution scheme. I just would have preferred that the rear wheels be the ones that are always driven, and the torque to the front be variable. This is how its done on Skylines.

It is much better this way

[Mr. Pockets]

How a viscous coupling works:

http://auto.howstuffworks.com/differential7.htm

Quite similar to a torque converter, actually...

[GreenMarine]

Originally posted by mbtoloczko
[B]Hi Brian, the standard WRX manual trannys use a standard 50:50 differential with a viscous coupler. If the viscous coupler detects a speed difference between the front and rear drivelines, then it more strongly couples the front and rear. The system is designed to try its best to maintain a 50:50 split while allowing some differential rpm in the front and rear drivelines./B]

This is what my SVX has