Slipping LSD??

[cat007]

Hey guys/gals

With an LSD - if I jack up one side leaving the other firmly on the ground, should I be able to turn the other side at all? If I can, what does this mean?

Or is that a bad way to test? Should I be testing by jacking up one side and turning the input shaft or?

[Mr.Phreak]

Depends on what type of LSD it is

[cat007]

Depends on what type of LSD it is

Standard MK3 Supra Clutch pack LSD.....

[rollaholic]

are they actually clutch type though? thought they had a torsen LSD.

anyway, how much effort does it require? if it is a mechanical LSD there will be a certain point where it begins to turn again. someone might even know the specs on here.

[cat007]

are they actually clutch type though? thought they had a torsen LSD.

anyway, how much effort does it require? if it is a mechanical LSD there will be a certain point where it begins to turn again. someone might even know the specs on here.

Some are torsen - most are clutch pack. If I dump the clutch off the line, it'll smoke both wheels - but it didn't take much effort to turn one wheel with the other on the ground....

[Flannelman]

been doing burnouts??

signs of sad LSD clutch packs are one wheel will drive and the other not as well, like riding a clutch. can be seen while doing a burnout (on a skid pad of course)

[cat007]

I might go do a burnout out in the wops and see what happens.

What if one wheel was on the road and one on the grass - if I drove off fast, would the grass wheel spin or?

[rollaholic]

it should but you will still move off as the wheel on tarmac will be getting power too, if the grass wheel spins and you dont move you have problems.

[Flannelman]

both should spin. sad LSD, only spin on grass. but will still move as the clutchs are being ridden in diff.

[escortman]

just shim it

[cat007]

I was thinking of taking it out and deglazing the clutch packs as apparently they get glazed quite frequently.

I'll see how it goes on the track.

I was just concerned that I was able to turn one wheel while the other was still on the ground....

[blackmk3]

Trust me Hunt you will be very dissapointed on the track when the oil heats right up and its starts single spinning, Sad Clutch pack diffs do exacly what your describing

Pull the bugger apart, get the clutch packs degazed, gimme a PM and ill show you where to put a few shims in, then it wont do what it was doing at suprafest for ya

Nick

[d1 mule]

general rule of thumb man, standard LSDs are useless. MIG or aftermarket ftw

[MAGN1T]

I was just concerned that I was able to turn one wheel while the other was still on the ground....

That's why they're called "limited slip"

Otherwise they'd be called "no slip"


Locked diffs are illegal and dangerous on the road.

Steve

[thegreatestben]

I have a torsen in my car,
Considering the price of some of the ones on Trademe, I'd definatly recommend one. Locks up nice and tight when you want it to

[method]

IF you jack up one wheel depending on the specs of the LSD and if it is a clutch type LSD it will take XXNm of torque to overcome the clutch and get it turning.

Also when the LSD receives power it will lock up.
I would just do a full lock turn on a smooth concrete surface in first gear and give it a bit of gas, back wheels should chirp/skip or slide out if you give too much gas, if it is bung it will single spin.