positraction problem?
Thread Starter
Le Mans Master
Joined: Jan 2006
Posts: 6,504
Likes: 139
From: Butler Pa
positraction problem?
I have the rear end out, sitting on the floor with the back cover off. I can grab both side yokes and turn them in opposite directions, not easily, but I can do it. Should I be able to do this?
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Yes. There is a specification for the force that should be necessary to slip the clutches. Remember it is not really positraction, but limited slip. There are clutches in there that allow for slippage around turns etc, but when the heavy force of acceleration is applied, the spider gears try to separate and apply pressure to the clutches, which tightens up the rear.
Tech Contributor
Joined: Aug 1999
Posts: 15,135
Likes: 3,939
From: Connecticut, USA
Check your GM manual, The break away force is 40+ ft/lbs while the other wheel is locked up. This is a rather wide range in my opinion as soem break away at 20 and work fine others don't. Do you still have the 4 springs in there? Do you have the posi apart? There's a lot to this but if you do a search on my name you should find a lot info and pictures. If you can't find it or have questions PM me and I'll help you out.
Here is a good start for you.
http://forums.corvetteforum.com/show...684&forum_id=3
Here is a good start for you.
http://forums.corvetteforum.com/show...684&forum_id=3
Racer
Joined: Mar 2003
Posts: 268
Likes: 0
From: Mechanicsville VA
Originally Posted by gtr1999
Check your GM manual, The break away force is 40+ ft/lbs while the other wheel is locked up. This is a rather wide range in my opinion as soem break away at 20 and work fine others don't. Do you still have the 4 springs in there? Do you have the posi apart? There's a lot to this but if you do a search on my name you should find a lot info and pictures. If you can't find it or have questions PM me and I'll help you out.
Here is a good start for you.
http://forums.corvetteforum.com/show...684&forum_id=3
Here is a good start for you.
http://forums.corvetteforum.com/show...684&forum_id=3
gtr1999 is THE GURU when it comes to these. His info made it real easy for me to do this work. Thanks again, Gary!
