Is VLSD in Sport Package really useful ?

Jhill

Well I know the vsld doesn't engage after heat up but I'm not really sure it wears out? From my understanding (zero vlsd experience but enough corvette clutch type) the vlsd works similar to something like a AT torque converter (without a TCC luck up clutch). Really no moving/ friction parts to wear and silicon fluid can take a ton of heat cycles. I'll trust others who've experienced it fail but I was just planning to get a z1/ nismo diff cover to help keep it cooler longer (not competitive enough to buy a Gilken).

Rusty

When new, the silicone fluid is thick. As it heats up. It becomes thinner. That's why during a track session. People noticing it going away. After cooling off. It comes back Now after so many miles. The fluid becomes thinner as it wears. That's why you read about people noticing the change in it's action. Once it wears, it doesn't come back.

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Jhill

I grasp the concept I'm just surprised the fluid breaks down so quick with no real debris exposure etc. not doubting it just surprising. Sucks I guess one more thing to plan on buying down the road, probably do a quaif/wavetrace type.

cloudofevil

It's a polymer so mechanical shearing and heat will break down the polymer chains over time.

markesc

So basically

$3500 if you want the wavetrac and 3.9....

https://www.z1motorsports.com/transm...al-p-9075.html