generally when that happens the VLSD is bad. yes they do go bad. i would save money and step up to a Nismo 1 way if you are using it for street. go 1.5 if you are going to do some track/auto stuff. and full 2 way if you want to go hard core.

things to know about LSD's though. you need to change the grea oil every 5-10K miles depending on what type of driving you do and 2 ways make terrible sounds and you think you have ****ed up your car. don't know if 1 and 1.5 ways do that too.

Synthetic is bad for LSD's yuse real gear oil and only real gear oil

Kragen tried to get me buy the synthetic oil for my LSD. I was like that's not good for the LSD, but they kept saying that I didnt know what i was talking about. SO I told them to go F*uck themselves.

I use 85w140 in my diff. Just to let you know nothing will take the clunk out of the LSD. Lighter oil will make the clunk softer but the clunk bothers you, your a pussy.

Well, I finally put in the rear end from the J30 and let me tell ya, it's real nice! :) Much better than the non LSD type.
I found a little something extra tho. When I put in the rear end, I found it to be a perfect fit and there was a little play available in the drivtrain for that extra 3/4 of an inch. However, the play does not come from the tranny, instead it comes from the support bearing on the drive shaft. Does pushing on the support bearing like that cause it to wear out quicker even tho it is a sealed unit?
Plus, if you use the shaft from the J30, you will need to modify the place where the support bearing sits because on the J30, it is located in a diffrent position.
Like the new drifting style. I am no longer ASS DRAGING!

i was always told a viscous and a clutch type were the same because the viscousity of the silicone based fluid haps join the clutch plates inside. if you watch the drift bible with keichi tsuchiya he explains this. also i dont know on all viscous/clutch types, but you can add plates which will cause it lock harder and faster and last longer if done right. however with experience of my friends who regularlly drift (about 3 nights a week) they seem to where out fairly quickly if you dont change the fluid and put in additive every change. if any one knows what i am saying is wrong please tell me because i am still sketchy on different types of lsds

viscous = clutch or atleast i have always been told.
pros- you can add plates and get them to lock harder and quicker
- easy to rebuild
cons- they wear out quickly if you drift regularly
- a worn out one will act like an open diff because no matter what a the viscousity of the fluid a worn out plate will not grab
synthetic oil or not make sure it is lsd oil and not just gear oil because regular gear oil is not silicone based where as lsd oil is

I don't remember that part of the drift bible... I remember they showed a Miata with a viscous trying to do donuts and not cutting it.

Viscous will not lock like a clutch type because you're depending on a liquid, not a solid, to clamp down when needed. Viscous LSDs are alright for beginner drifters but they will never meet the superiority of a good clutch-type diff. Think about it - it's like trying to run through a pool of motor oil, vs. trying to run through a brick wall.

With that said CLUTCH TYPE SUGOI!!!

can you explain better because i thought viscous lsds had clutch plates in them and that you could add plates to make them grab harder?

VLSD's do have plates in them but from what I understand and have seen the plates never actually touch each other. The "lock" happens when the plates (attached to one side or the other half of the axle) spin at seperate rpms... enough of a speed difference to heat up the viscous fluid - in the case of VLSD's, usually it's gear oil.

Now then, when the fluid's temperature raises, it expands - putting pressure on the plates. Again - the plates never physically touch each other - the fluid, sitting in the gaps between the plates, expands, making the plates spin slower for the locking effect.

Inherently, this is a weakness of the VLSD because there is no actual lock-up until AFTER one wheel loses traction... whereas with a clutch-type, the plates physically lock at a certain torque level (related to rpms) regardless of whether or not one of the two rear wheels lost traction.

If I'm wrong, someone correct me :thumb:

No your right. But VLSD sucks get a real diff.