r200 clutch type???

[Guest Child_inblack]

r clutch type lsd diffs good as opposed to viscous units? whats the difference?

[JMortensen]

Viscous LSD builds fluid resistance when one wheel spins at a different rate than the other, which is used to drive both at the same speed again.

 

Clutch type is always preloaded to keep tires moving the same speed, and in Nissan's unit also is driven by torque. The more power you give it, the tighter it locks up. Clutches tend to chatter, and need to be replaced periodically.

 

There are reasons for each: viscous won't make the front of the car push, but it does nothing until after one wheel starts to spin. VLSD is not torque sensing but it is slip sensing. The more the wheel slips, the more fluid pressure tries to stop it. Not adjustable. Smoother.

 

Clutch type is adjustable, you can make it very aggressive, and it is torque sensing, but if you adjust it super tight then it makes your car push because it acts like a spool until you overcome the friction in the clutches. Adjustable. Not as smooth.

 

I like clutch type units, FWIW.

 

Jon Mortensen

[CruxGNZ]

VLSD is not torque sensing but it is slip sensing. The more the wheel slips, the more fluid pressure tries to stop it. Not adjustable. Smoother.

 

The VLSD is adjustable with different weight oils.

 

For simpler terms with pictures, look at this link:

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

 

!M!

[gramercyjam]

I have an R180 VLSD in my 240Z and it might as well be an open diff. So where do I get this heavier oil for it and how do I put it in?

 

--John B

'73 240Z

[Guest Child_inblack]

thank u gize very much that helps a lot