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  1. #1
    Former Member
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    Apr 2012
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    Reading, PA
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    Default Explain the G80 operation to me...

    OK, I know its a hybrid of sorts...its primarily a locking differential, but I'm pretty sure its got clutches to activate the locking mechanism...how do they work? What gear oils is everyone using, and is there any brands that cause problems?

  2. #2

  3. #3

    Default

    As I am sure the video states (I think I have seen it before but didnt watch it now) Basically it works like a limited slip. it is open until there is a detected wheel spin of a set speed. At that point it will fully lock as a locker would. It will stay locked up to a certain speeds (both on the upper and lower end).


    Ok so I watched the video again (good video). they said it a little more technical than I did
    Last edited by dsfloyd; 05-17-2012 at 04:27 PM.
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    http://www.gmtruckclub.com/forum/sho...Silverado-2500
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  4. #4
    Former Member
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    Default

    OK, that makes sense; it operates like a Dana Trac-Loc but has the ability to add more load to the friction discs than that developed soley by the bellevue washers...so its a fancy limited slip, not a true locking diff by any stretch of the imagination.

    So it will be sensitive to the type of gear lube used...

  5. #5

    Default

    I use mobil 1. You just need to use a synthetic 75-90. Once it locks it is a true locker as it will send equal power to both wheels. The design tends to lead to alot of discussion on threads but technically speaking once the 100rpm difference is detected it fully locks, making it a locking diff.
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    http://www.gmtruckclub.com/forum/sho...Silverado-2500
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  6. #6
    Former Member
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    Location
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    Default

    Fully locks using clutches...but there is no steel-to-steel contact like a true "locker" like a Detroit.

  7. #7

    Default

    good video. thanks for posting it surreal.

    Alex


    2011 GMC Sierra SLE 5.3 Z71 4X4 Stealth Gray Metallic / 2004 Chevy Impala LS 3.8 Cappuccino

    Tow mirrors - Diablew Tuned - Flowmaster Regular 40 - Ready Lift 2.5' lift - BFG LT A/T K/Os - Carr Light Wing - TruckLite LED lights - Optima Red Top - 50% Front Window Tint - Line-X bedliner - Airaid MIT - Tekonsha P2 - ARS Billet Grill - Fia custom fit seat covers

  8. #8

    Default

    Happy to help....

  9. #9
    Former Member
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    Apr 2012
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    Default

    OK, when did they install a drain plug in these axles? I just found this today when I was changing oil...I assume its a oil drain plug and not some sort of gasket self-destruct screw?

  10. #10

    Default

    Ive got a drain plug on my 04 9.5"
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    http://www.gmtruckclub.com/forum/sho...Silverado-2500
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

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