So, i was doing a couple donuts in my fc3s turning left, and when i burnt out only the right side was burning. When i made my line of shooting out of the donut both of the tires burnned nice n' smoothly strait out. When i drift both tires roost aswell. So is my LSd good/ or bad?


the tires are 225 - goodyear eagle f1
stock turbo apexi ecu 3' exhausts suspension

 

Well it could just be your lsd wearing out, if both tires rotated at the same time on the straight its doing its job somewhat, but when applying more work to it, it could be slipping. Also I have read the clutch type lsd is more reliable than the VLSD which tends to wear out more....

It's an old lsd, so don't expect much out of it....

 

Actually, it's the other way around. The clutch type LSDs can have the disks wear out, but the viscous LSDs last pretty much forever. The clutch types lock up a lot better than the VLSDs though, so the VLSD is sort of a weak LSD.

I'd also take a guess that it's a worn clutch type LSD that slips some.

 

LSD is most likely worn out a little. Whens the last time you changed the fluid? Sometimes some fresh fluid can help out.

 

I find it odd that that during a hard left the rightside(outside wheel) is the one burning.

 

Wrong. The non-newtonian fluid breaks down in VLSD's and doesn't shear thicken to the same viscosity. Clutch types last longer and lock harder than VLSD's.

To the OP, most factory LSD's are pretty worn by 50-75k miles.

 

This is the first I've heard of the fluids breaking down, but it makes sense. Still, I don't agree that a clutch type will last longer. It depends on how it is used, and how hard the driver is on it, but I'd fully expect a clutch to wear out from friction before a fluid breaks down. Do you actually have proof/experience with this, or are you just assuming?

And I already said the same thing about the clutch types locking up harder than the VLSDs. A VLSD is practically an open diff at low slip rates.