You are wrong, there is no factor locker, It is called a GovLoc but
it is a clutch based LSD with a centrifical governer to engage
clutches that can cause it to bang at times to. Locking differentail
is the wrong name for it but they still use it though for sales but it
is misleading. If this a 1/2 ton silverado with a 10 bolt rear axle,
the GovLoc is pretty weak and will not take much abuse before it gets
tired, especailly if it it has oversized tires because you a greatly
limited by how much clutch are you can fit inside a 8.6 inch ring gear
and the bigger the tires, the harder the clutches have to work. If you
go through the trouble to replace it, do not get another GovLoc for
it. Eaton offer a non govloc HD LSD that is even a option of some
trucks now it is called a G82 or G83 I forget which (not a G80 which
is a GovLoc) and is end user rebuildable too
Again I do not give a hoot what it says for sales reason, it is not a
locker, I have had them apart, it is a governor controlled clutch
based LSD and I do not know what planet that you came from that uses
friction clutchs in lockers because it is a LSD and it will slip when
torque capacity of it is exceeded, simple physics. A "locker" has
actaly mechanical locking of axles together that cannot slip unless on
something breaks. You could take a truck with a true locker
(selectable or mechnica) place a load in back of truck, secure it so
it cannot move and jack up on wheel and power it and burn the tire on
the ground off untill it fails (the tire). Try that with a GovLoc and
in a minute or 2 tops the clutches in the GovLoc will be toast. Your
instant on believing it is a locker is because you do know understand
what a true locker is and is not.
So back to my original question, is something broken inside and if so I
assume it is better to replace with a locker either mech. or selectable. Oh,
when I had the vehicle on a hoist I noticed that when one wheel is turned by
hand the other rotates in the opposite direction, I thought that if the LSD
was working they should rotate in the same direction. Thanks
No, that part's normal...
A LSD or auto-locker is going to be "open" until it senses wheelspin.
That's how all open (non-locked) diffs work when you spin one wheel
while both are off the ground.
There is a BIG difference though on how they work because true "auto"
lockers like a Detriot or Lock Right and such have no spider gears and
can only power both wheels same speed or the outside wheel coasts in a
turn when it is 1 wheel drive. A LSD limits torque loss to spinnig
wheel via clutches or gears (like with a True Trac) so it can power
both wheels in a turn. A open diff ALWAYS send the same torque to both
wheels as it cannot do anything else *the torque is limited to the
amount that wheel with least traction can handle. Even when one tire
spins they are both getting same tor it is just that one may be a zero
RPM while the other is a 600 RPM or more. THe hottest ticket is a
selectable locker like a Eaton E-locker. For more info on how various
diffs work, check out link below
Thats why I tried to explain that its not an LSD, its a locker. It has
those small weights which lock it when the speed between the wheels
differs. Yes it uses clutches to lock, but there is no slip like an LSD
and its not always locked so up on a hoist turning one wheel will not be
cause it to lock.
If you put one wheel on pavement and the other on grass and hit the gas hard
you will feel it lock, it will make a bang when it happens, since its not
an LSD where the clutches slip its an all at once lock. thats also why it
tends to be weaker than an LSD since you the lock can catch in under a real
stressful situation and break it.
I feel sorry for you trying to argue with Snoman. It's a lost cause.
He won't admit that the G80 is a locking diff, not a limited slip
diff simply because "you can overcome the torque of the clutch
discs". This is typical of his style of logic. Because he believes
that you can only call a diff a locker if it mechanically locks
the two axles together without clutch packs, this is what you get.
Obviously he would like to disregard a million other items in
vehicles that use clutches to "lock" two items together mechanically.
Whether or not the g80 is a "good" locking diff, or the "best" locking
diff is totally irrelevent, but Snoman will pull any and all of these
points into his argument.
It's hardly worth it....these types of threads are simply a soap box
for Snoman to climb up on and regale everyone with lot's of
"real life" stories about locking diffs and g80's and trucks that
he's driven...blah blah blah.
You should try this test before you mention it and you will change your own
I have jacked up one side rear with the front bumper against a concrete wall
and yes it is a locker the tire on the ground will spin. And yes it will do
it in reverse also. Just cause it uses clutches doesn't mean it can't lock
the axles. I would consider any standard shift cars engine to be locked to
the driveshaft when the clutch is fully engaged. So what if it is governor
controlled when it is locked it is locked. Try your own test. I have used it
many times to determine if peoples G80 was working correctly. Most are.
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