legacycentral bbs

A viscous coupling LSD limits the speed difference between its two output shafts. It's filled with this goo that, when hot, is extremely viscous. So, when a wheel slips and it starts to go much faster than the other wheel, the goo heats up and thickens so it starts forcing both wheels to move.

The point is that it gives you more traction because one rear wheel losing grip won't completely prevent the other from applying torque to the ground. An open differential (without the viscous coupling) would leave the slipping wheel spinning and the non-slipping wheel stationary.

As it turns out I have one of those rare 1991 turbos with the LSD and I DONT NEED THE LSD. I posted it for sale on Nasioc and nobody wanted it. How about you guys? Ill post it in the for sale forum.

Hey guys, just wanted you to know my 91 turbo isn't for sale. I want to know how many, have one with over 280,000 miles. Thats what mine has and is still going strong. One problem it grinds slightly going into 4th and 5th gear. Maybe the synchronizers are going? By the way mine has an LSD with 3.90 gears.