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General Forums => The Mess Hall => Topic started by: Sine Deviance on March 25, 2010, 08:35:30 PM

Title: Need some differential advice for a friend...
Post by: Sine Deviance on March 25, 2010, 08:35:30 PM
Hey all. A friend of mine has a Chevy G20 conversion van and the rear pumpkin has excessive wear. The gears are a little chewy but the bearings seem to be serviceable. It's rebuild time, but what he wants to do is to keep it working for another couple thousand miles because he's saving up to buy a new car. He's heard of shimming the rear end to get a little more life out of it, but neither he nor I have any idea how this works.

Can anyone shed some light on options? What's the "$75 redneck 'just get me by' band-aid fix" in this case?
Title: Re: Need some differential advice for a friend...
Post by: sharpxmen on March 25, 2010, 09:27:54 PM
Hey all. A friend of mine has a Chevy G20 conversion van and the rear pumpkin has excessive wear. The gears are a little chewy but the bearings seem to be serviceable. It's rebuild time, but what he wants to do is to keep it working for another couple thousand miles because he's saving up to buy a new car. He's heard of shimming the rear end to get a little more life out of it, but neither he nor I have any idea how this works.

Can anyone shed some light on options? What's the "$75 redneck 'just get me by' band-aid fix" in this case?

my best guess is that it means re-arranging or setting the carrier shims to move the ring more into the pinion so there's less backlash.
Title: Re: Need some differential advice for a friend...
Post by: Jeffy on March 26, 2010, 12:18:32 AM
For $75 you can probably buy a used 12 bolt rear-end.
Title: Re: Need some differential advice for a friend...
Post by: YJmechanic on March 26, 2010, 10:36:43 AM
yeah if ur gonna cheap it,  just find a junkyard axle and through it in
Title: Re: Need some differential advice for a friend...
Post by: JohnnyO on April 02, 2010, 07:42:34 AM
A legendary crooked used car lot fix is to pack the diff with sawdust and banana peels.  I don't know that you'd get a couple thousand miles out of it though.
Title: Re: Need some differential advice for a friend...
Post by: Sine Deviance on April 02, 2010, 10:12:54 PM
He found a 12-bolt on craigslist for $50. Insides looked good, fixed him right up. It even bolted right up. Thanks Jeffy!  :bow:

A legendary crooked used car lot fix is to pack the diff with sawdust and banana peels.  I don't know that you'd get a couple thousand miles out of it though.

 ???
Title: Re: Need some differential advice for a friend...
Post by: Jeffy on April 02, 2010, 10:20:28 PM
He found a 12-bolt on craigslist for $50. Insides looked good, fixed him right up. It even bolted right up. Thanks Jeffy!  :bow:

 ???
Yeah, 10 and 12 bolts aren't sought after and are a dime a dozen.  It's only the 14 that is a bit harder to find.  Still easier then a Dana 60.
Title: Re: Need some differential advice for a friend...
Post by: Sine Deviance on April 03, 2010, 12:51:05 AM
Yeah, 10 and 12 bolts aren't sought after and are a dime a dozen.  It's only the 14 that is a bit harder to find.  Still easier then a Dana 60.

How would a 12-bolt compare to, say, a D44? Would it be stronger or weaker? Would there be downsides?
Title: Re: Need some differential advice for a friend...
Post by: FourbangerYJ on April 03, 2010, 09:24:25 AM
How would a 12-bolt compare to, say, a D44? Would it be stronger or weaker? Would there be downsides?

They are about the same, but the 12B has C-clips. Not sure on the tube strength.