Is my posi shot?
02-05-2009, 12:22 AM
#1
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Is my posi shot? I have a stock 2002 SS, M6 with 24K miles, And I went to the track for the first time last week. I had some sad 60' times (2.16-2.19 with Nitto D/R'S). so I am washing the car tonight and there is lot's of rubber (from the burnouts) on the pass side. (I am thinking cool!) so I get to the driver's side and almost nothing? are my cluthes shot? Whats the deal? she acts like a fU%*ING PEG LEG.
02-05-2009, 01:10 AM
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Could be, but the tires could have different pressure in them, the track might have been different in prep on the left/right sides, etc..
Could be a million different things explaining different amounts of rubber on the sides of the car.
Do a quick burnout somewhere where you can see the marks.
One mark = Fekked posi
Two marks = Your good to go
Simple, and fun, test.
Could be a million different things explaining different amounts of rubber on the sides of the car.
Do a quick burnout somewhere where you can see the marks.
One mark = Fekked posi
Two marks = Your good to go
Simple, and fun, test.
02-05-2009, 10:50 AM
#3
I have a stock 2002 SS, M6 with 24K miles, And I went to the track for the first time last week. I had some sad 60' times (2.16-2.19 with Nitto D/R'S). so I am washing the car tonight and there is lot's of rubber (from the burnouts) on the pass side. (I am thinking cool!) so I get to the driver's side and almost nothing? are my cluthes shot? Whats the deal? she acts like a fU%*ING PEG LEG.
If you can understand the pic attached, it delivers more torque to the wheel with the most traction (slower spinning) the wheel with less traction gets the rest. Say 80% to the slow turning wheel with traction and 20% to the high spinning wheel without traction.
If a torsen isn't broken physically it's still working fine, and the rubber on your wheel wells was due to something else, track prep, etc.
Last edited by 9000th01ss; 03-18-2009 at 12:17 AM.
02-05-2009, 12:53 PM
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Since you didn't mention it I'm assuming you have the stock diff, which is a Torsen.
If you can understand the pic attached, it delivers more torque to the wheel with the most traction (slower spinning) the wheel with less traction gets the rest. Say 80% to the slow turning wheel with traction and 20% to the high spinning wheel without traction.
If a torsen isn't broken physically it's still working fine, and the rubber on your wheel wells was due to something else, track prep, etc.
If you can understand the pic attached, it delivers more torque to the wheel with the most traction (slower spinning) the wheel with less traction gets the rest. Say 80% to the slow turning wheel with traction and 20% to the high spinning wheel without traction.
If a torsen isn't broken physically it's still working fine, and the rubber on your wheel wells was due to something else, track prep, etc.
Is there a way to check if it is working right? I know on a clutch styl posi you can jack the wheel off the ground and use a tq wrench to see how tight it is.
02-05-2009, 03:01 PM
#5
If it's smooth and there is no noise, then it's working fine.
You could always go a step further and take the cover off, spray all the gear oil off so the cushioning effect doesn't hide any noises and spin the tires by hand. Look for cracks in the case of the torsen, and metal chunks.
If it sounds good it is good.
And to cover all the bases, there is a torsen T-2 that uses clutches, but chances are good thats not the one you have.
02-05-2009, 08:39 PM
#6
Teching In
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can you make it lock up by hand or does it take more force than that. I did the wheel spin by hand and was worried that it was an open rear. The other wheel spun opposite the one I was turning.
02-05-2009, 10:16 PM
#7
Read about it on their site, www.torsen.com http://www.torsen.com/general/general_faq.htm
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02-05-2009, 11:05 PM
#9
Since you didn't mention it I'm assuming you have the stock diff, which is a Torsen.
If you can understand the pic attached, it delivers more torque to the wheel with the most traction (slower spinning) the wheel with less traction gets the rest. Say 80% to the slow turning wheel with traction and 20% to the high spinning wheel without traction.
If a torsen isn't broken physically it's still working fine, and the rubber on your wheel wells was due to something else, track prep, etc.
If you can understand the pic attached, it delivers more torque to the wheel with the most traction (slower spinning) the wheel with less traction gets the rest. Say 80% to the slow turning wheel with traction and 20% to the high spinning wheel without traction.
If a torsen isn't broken physically it's still working fine, and the rubber on your wheel wells was due to something else, track prep, etc.
The Torsen diffs in the 99-02 cars aren't lockers, launching the car usually won't give you two long black marks. Usually you'll get one dark mark and one lighter one due to the difference in available traction between the tires.
The Torsen is a "torque distributing" differential, meaning it constantly varies torque output to each wheel based on that wheels available traction. Ideally both wheels have the same amount of traction and each one gets 50% of the torque, but thats rarely the case due to difference in road surface, tires, weight distribution, ect.
02-06-2009, 03:53 PM
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I think you gave him the best answer.
The Torsen diffs in the 99-02 cars aren't lockers, launching the car usually won't give you two long black marks. Usually you'll get one dark mark and one lighter one due to the difference in available traction between the tires.
The Torsen is a "torque distributing" differential, meaning it constantly varies torque output to each wheel based on that wheels available traction. Ideally both wheels have the same amount of traction and each one gets 50% of the torque, but thats rarely the case due to difference in road surface, tires, weight distribution, ect.
The Torsen diffs in the 99-02 cars aren't lockers, launching the car usually won't give you two long black marks. Usually you'll get one dark mark and one lighter one due to the difference in available traction between the tires.
The Torsen is a "torque distributing" differential, meaning it constantly varies torque output to each wheel based on that wheels available traction. Ideally both wheels have the same amount of traction and each one gets 50% of the torque, but thats rarely the case due to difference in road surface, tires, weight distribution, ect.
