Need LSD explained
 

Ok, I'm hoping that people on here could explain what the differences are between a 1 way, 1.5 way, and 2 way LSD. I understand the differences between clutch and viscous types, but what are the pros and cons of each of the types i mentioned? Thanks a bunch for any help you can provide.

1 way- locks on acceleration
1.5 way - locks on acceleration and partial lock on deceleration
2 way - locks on acceleration and deceleration..

somebody correct me if im wrong...

^^ you are correct sir. Tech stuff below.

From Wikipedia:

"If there is no additional coupling on over run, the LSD is 1 way. This is a safer LSD: as soon as the driver lifts the throttle, the LSD unlocks and behaves somewhat like a conventional open differential. This is also the best for FWD cars, as it allows the car to turn in on throttle release, instead of plowing forward.[2]

If the LSD increases coupling in the same way regardless of whether the input torque is forward or reverse, it is a 2 way differential. Some drifters prefer this type as the LSD behaves the same regardless of their erratic throttle input, and lets them keep the wheels spinning all the way through a corner. An inexperienced driver can easily spin the car when using a 2 way LSD if they lift the throttle suddenly, expecting the car to settle like a conventional open differential.

If the LSD behaves somewhere in between these two extremes, it is a 1.5 way differential, which is a compromise between sportiness and safety."

Nadeem

Is the stock VLSD considered 1 way?

based on those descriptions I would assume so Wilsonp

the stock lsd could be a 2 way if bad things were happening. It works on the speed difference between the wheels so if one wheel is spinning a lot faster than the other it tries to lock up. helical gear diff's are also a "2way" as they send a torque ratio from one wheel to the other regardless of the situation. the 1, 1.5, 2 way terms are mainly used for the clutch type limited slips.