12 Bolt Rear axle gears a bit rusty - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Gordonr1973 · 05-11-2011, 10:16 PM

I found a 12 bolt rear end with a posi...needs new brakes of course!

But it has some rust inside the housing....any tips on how to clean it up or just run it for a day with gear oil then completetly change the gear oil out with new stuff and should be good???

Any other methods out there?

b454rat · 05-12-2011, 08:20 AM

Eww, grenade lock!!!! Put oil in it, run it, then change it. The grenade locker will give out before anything happens with the gears.

kelsfine69 · 05-12-2011, 10:51 AM

Yup run it then change oil

**N2TRUX** · 05-12-2011, 10:59 AM

Quote:

Originally Posted by b454rat

Eww, grenade lock!!!! Put oil in it, run it, then change it. The grenade locker will give out before anything happens with the gears.

I know the Gov-Loc is weak, but they aren't as bad as you make it sound. My guess is thats a 70's axle, and its lasted this long.

Tony@AirRideTech · 05-12-2011, 11:42 AM

with no horsepower and no tires they will live. Get the RPM's up and then the centrifical weights kick in and it gets ugly. But heck, I would run it till it fragged too.... you never know. Just depends on how you drive it.

**N2TRUX** · 05-12-2011, 10:57 AM

Rinse it out completely thinner first. If it doesn't have one, I would epoxy a magnet on the inside bottom of the cover. Run it a little and pull the cover. Clean the magnet, add fresh oil and move on.

Gordonr1973 · 05-13-2011, 12:09 AM

Well, I had an Auburn put in my '98 for $1,000 last year....I thought for $150 plus the cost of brakes I will go with this setup until it blows.

Tony@AirRideTech · 05-13-2011, 10:07 AM

Quote:

Originally Posted by Gordonr1973

Well, I had an Auburn put in my '98 for $1,000 last year....I thought for $150 plus the cost of brakes I will go with this setup until it blows.

Exactly ..... then IF and WHEN she lets loose, look into the Eaton Tru-trac. I have had exceptionally good luck with these units. Especially if your not wanting to go full locker/ spool.

**N2TRUX** · 05-13-2011, 11:05 AM

Quote:

Originally Posted by Gordonr1973

Well, I had an Auburn put in my '98 for $1,000 last year....I thought for $150 plus the cost of brakes I will go with this setup until it blows.

Very good idea. As mentioned they aren't the strongest unit by design, but for a buck fitty, go for it.

Gordonr1973 · 05-13-2011, 10:32 AM

Maybe. As long as they are quiet I will consider it. I put a Detroit Locker in another '98 I had and I had to pull it. The noise drove me crazy!

05-11-2011, 10:16 PM	#1
Gordonr1973 Home Built '87 Join Date: May 2010 Location: Calgary, Alberta Canada Posts: 1,829	12 Bolt Rear axle gears a bit rusty I found a 12 bolt rear end with a posi...needs new brakes of course! But it has some rust inside the housing....any tips on how to clean it up or just run it for a day with gear oil then completetly change the gear oil out with new stuff and should be good??? Any other methods out there? Attached Images __________________ Gordon 1998 White Chev ext cab 2WD (Summer Project) http://67-72chevytrucks.com/vboard/s...d.php?t=408424 1987 Chev Silverado SWB (Winter Project Rebuild) http://67-72chevytrucks.com/vboard/s...d.php?t=424833 Truck Club http://67-72chevytrucks.com/vboard/s...d.php?t=466969

05-12-2011, 08:20 AM	#2
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,469	Re: 12 Bolt Rear axle gears a bit rusty Eww, grenade lock!!!! Put oil in it, run it, then change it. The grenade locker will give out before anything happens with the gears. __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon 350/4L60 6" SAS

05-12-2011, 10:51 AM	#3
kelsfine69 18 Till I Die Join Date: Mar 2005 Location: Alberta, Canada Posts: 1,522	Re: 12 Bolt Rear axle gears a bit rusty Yup run it then change oil __________________ 2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home...

05-12-2011, 11:42 AM	#5
Tony@AirRideTech Junior Member Join Date: Feb 2005 Location: Huntingburg IN Posts: 620	Re: 12 Bolt Rear axle gears a bit rusty with no horsepower and no tires they will live. Get the RPM's up and then the centrifical weights kick in and it gets ugly. But heck, I would run it till it fragged too.... you never know. Just depends on how you drive it.

05-12-2011, 10:57 AM	#6
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Re: 12 Bolt Rear axle gears a bit rusty Rinse it out completely thinner first. If it doesn't have one, I would epoxy a magnet on the inside bottom of the cover. Run it a little and pull the cover. Clean the magnet, add fresh oil and move on. __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

05-13-2011, 12:09 AM	#7
Gordonr1973 Home Built '87 Join Date: May 2010 Location: Calgary, Alberta Canada Posts: 1,829	Re: 12 Bolt Rear axle gears a bit rusty Well, I had an Auburn put in my '98 for $1,000 last year....I thought for $150 plus the cost of brakes I will go with this setup until it blows. __________________ Gordon 1998 White Chev ext cab 2WD (Summer Project) http://67-72chevytrucks.com/vboard/s...d.php?t=408424 1987 Chev Silverado SWB (Winter Project Rebuild) http://67-72chevytrucks.com/vboard/s...d.php?t=424833 Truck Club http://67-72chevytrucks.com/vboard/s...d.php?t=466969 Last edited by Gordonr1973; 05-13-2011 at 12:10 AM.

05-13-2011, 10:32 AM	#10
Gordonr1973 Home Built '87 Join Date: May 2010 Location: Calgary, Alberta Canada Posts: 1,829	Re: 12 Bolt Rear axle gears a bit rusty Maybe. As long as they are quiet I will consider it. I put a Detroit Locker in another '98 I had and I had to pull it. The noise drove me crazy! __________________ Gordon 1998 White Chev ext cab 2WD (Summer Project) http://67-72chevytrucks.com/vboard/s...d.php?t=408424 1987 Chev Silverado SWB (Winter Project Rebuild) http://67-72chevytrucks.com/vboard/s...d.php?t=424833 Truck Club http://67-72chevytrucks.com/vboard/s...d.php?t=466969

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