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My GQ has a big crack in the diff
Posted: Sun Apr 18, 2010 3:30 pm
by create
I noticed a small puddle appearing under the front diff pumpkin on my GQ. I cleaned up the area and left it. When I came back the next day and had a good look I found I have a hairline crack in the weld about 50mm long. Can I drain the oil, grind back and then mig weld it?
Posted: Sun Apr 18, 2010 3:56 pm
by 351ciofgrunt
Yes this is very common, I ground out a hairline crack in my rear diff and mig welded it.
diff crack
Posted: Sun Apr 18, 2010 5:24 pm
by goods
yes you can, but it will crack again one day! best to get another housing when one comes up cheap but a weld will get you through for a while.
Posted: Sun Apr 18, 2010 8:25 pm
by pinkfloyddsotm
damn thats crazy!
Re: diff crack
Posted: Sun Apr 18, 2010 8:33 pm
by familybus
goods wrote:yes you can, but it will crack again one day! best to get another housing when one comes up cheap but a weld will get you through for a while.
why will it crack again if cleaned properly and maybe even a very tinny hole drilled in the ends of it and then welded up real good?
Posted: Sun Apr 18, 2010 9:06 pm
by steveoo
mine cracked in the same spot too. Mig welded it up about 2 months later cracked again.
Re: diff crack
Posted: Sun Apr 18, 2010 9:15 pm
by big red
familybus wrote:goods wrote:yes you can, but it will crack again one day! best to get another housing when one comes up cheap but a weld will get you through for a while.
why will it crack again if cleaned properly and maybe even a very tinny hole drilled in the ends of it and then welded up real good?
mine had numerous cracks happen in the same spot ... 14 on one trip alone !
had it done in all sorts of ways and by professionals as well as myself ... nothing stopped it happening again.
later housings [after 92 i think] are stronger.
i would suggest bracing the housing and then welding it up.