what does that mean "Viscous Limited-slip Rear Differential"??
it means had spoiler? or differnt design???

 

Use the search function at the top man, you'll have tons to read

 

Spoiler????

 

It means your gas tank has been upgraded with moth ball power

 

Bwahahahaha

 

It means the tranny is connected to the flux capacitor and we've got to get you back to the future, Marty McFly.

 

your posts are no worse than his... quit making this a long thread and just tell him what it is.

The Viscous Limited-slip Rear Differential is the material used to lubricate the bucket leather seats in your car so that the slippage of your rear is limited to the area that is lubricated. this area happens to be lubricated in a "V" position and is activly present like a viscous dwarf in your pants during sharp cornering, hence the name "Viscous"

 

Check out this sight... How VLSD will make your faster than a twin turbo.

 

The VLSD is simple. It basically provides more power to the wheel that has the better grip. You can read more about it in the "infiniti mistake" sticky thread if you are inclined.

 

Short Answer:
Transfers power from the wheel that is slipping, to the wheel that is gripping
Say, if one of your rear wheels is on a patch of ice at the light, when you step on the gas, only one of your rear wheels will have traction. Without LSD you will be slow going with the loss of power to the ground. But with LSD, that power will be transfered to the non-ice wheel to get you going.

Better Answer:
http://auto.howstuffworks.com/differential9.htm

ps not sure how "short" my short answer was

 

Just to clarify, only a glen torson type LSD will transfer large amounts of power from the wasted energy of a slipping wheel to one that has more grip. Also viscous limited slip system's work on the principle that they have to allow slip to occur before they can function. And they have a limitation in how much power they can deal with before the viscous fluid give up and the tires win.

The following is a cut and paste from the company that makes the oem viscous LSD's for Nissan.

Hitachi/Tochigi Fuji Sangyo
"Viscous LSD units are popular OEM LSD solutions, as they are relatively simple and cheap to produce. They come in many performance Subarus, Nissans, Mazdas, Toyotas, etc. The LSD unit consists of stacks of thin plates with holes or slots, all suspended in a special silicone fluid. They have no clutches to wear out, and locking characteristics can theoretically be changed by varying fluid viscosity. Generally, however, these units are non-serviceable, and require no special maintenance. As the differential spins, the plates shear the fluid up to a point, after which the fluid provides some resistance to shear, allowing 15-25% torque transfer to the other wheel. The downside is that these units don't act like a limited slip until one wheel actually starts slipping (i.e., they don't prevent slippage), which means the VLSD action often kicks in after you've already exited the corner. Compared to the proactive nature of the Torsen LSDs, the VLSDs are reactive units. They do not prevent slippage, they merely sense differences in rotation, not torque. They also don't allow for very much torque transfer, compared to mechanical or clutch-pack LSDs. They do still work well for starting from a dead stop in slippery conditions. It is important to note that VLSDs locking characteristics occur both during acceleration AND braking, as it can't tell the difference between the two, but merely reacts to the rotational speed differences between the two drive wheels. "

 

am i correct when i say that in the 03-04 G35C models the performance wheel & tire package included the VLSD?? Therefore those who did not purchase/pay for the package dont have VLSD?!?!

Here's a thread i found w/ some good info...

https://g35driver.com/forums/showthr...+wheel+package

 

...or if you're too lazy to read about it, go rent the movie My Cousin Vinny - there's a good "layman's terms" definition in there for the benefit of the jury