Chronicle

iTrader: (7)

Okay, so I've wondered about this for a little while now. My car spins wheels extremely easily, even though I've got a basically stock setup and 315 tires (they're Sumitomos, but still). When I say I spin easily, If i'm in first coasting as 15 mph and step on it, I spin. I was looking at my maintenance log and apparently about 60k miles ago (long before I owned the car), the diff had to be replaced. Is there a chance that the dealer jipped the previous owner and put an open differential from a V6 in my car?

01ssreda4

iTrader: (96)

Does the back end get loose when it spins the tires? Mine feels loose as soon as its starts to spin. One wheel peel should be pretty easy to verify.

Chronicle

iTrader: (7)

I've just never gotten around to getting someone stand outside the car while I tried it. Would i be able to tell by putting it on a lift and just pushing the wheels around with my hand?

WarShrike

iTrader: (5)

You could just raise the rear, put it in neutral and rotate the driveshaft.

FWIW, a slightly modded V6 on the same size Sumitomos could probably do the same thing, those tires are pretty much garbage.

Chronicle

iTrader: (7)

Okay, if I do this, what SHOULD happen if it's the right diff? And what will it do with an open differential?

RedHotG8

iTrader: (1)

Do a burnout and count the tire marks, it doesn't get any easier than that!

1 tire mark = open
2 tire marks = posi

FiredUpZ28

Open up the cover, it may be due for a fluid change anyways. If you just see a carrier with 4 spider gears then its open. If its a solid unit with little worm gears inside or if you see clutch packs in between the spider gears, its limited slip.


True, but he could have a failed limited slip unit....

I guess either way it would need to be replaced!

I could be wrong but if its a Torsen rear it'll act like an open diff when raised in the air (since there is "zero" traction in the air), I think thats what my V6 with the Torsen does.

WarShrike

iTrader: (5)

Hmm, mine with the OEM posi moves both.

Deviant LS1

iTrader: (4)

An auburn will move both. A zexel torsen is a torque sensing diff and will be act open until torque is applied. If there is a torsen then if you move one wheel then the other might not move while in the air.

2nd3rd4thgen

the v6 rear ends had limented slip(gov lock) as well, i got one at a junk yard and it spun both tires everytime.

Chronicle

iTrader: (7)

Alright, looks like I'm taking a trip on a couple backroads later today.

FiredUpZ28

If you do a brake torque with either limited slip rears you should roast both tires - easilly with and LS1 The best way I do burnouts on the street is brake torque just until the tires let loose then let off the brake pedal and stab the throttle. My car doesn't like to sit on a burnout for some reason, could be the rear brake lining material....

cemlsx

Best way to test it

Deviant LS1

iTrader: (4)

They were not standard. It was an option that most didn't get.

LS1T56FTW

iTrader: (3)

WarShrike

iTrader: (5)

Yup, like mine. Gu6 G80 optioned car

96lt4c4

iTrader: (5)

Just pop the back cover off and take a look. When was the last time it had a fluid change.

Chronicle

iTrader: (7)

I just replaced my front O2s at my friend's shop, and I asked him to watch and tell me what I left behind. 2 marks! Now I guess my quest for traction takes me to replacing my 146k old shocks and springs.

RedHotG8

iTrader: (1)

I'd say you need to get some stickier tires along with the new shocks & springs.

Chronicle

iTrader: (7)

Yeah, I need to ditch these **** Sumitomos. But I'm just not ready to go all the way to Mickey Thompson's ET Streets.