[alfa] Re: Glunk in Rear End

["Dean W. Cains" <dwc@xxxxxx>]

Hi Robert:

"Bent differential" is about the same as needing new muffler bearings or 
Johnson rods.  Feel free to pass that along to your "mechanic".

If the noise occurs most during a 1-2 upshift, I'd suggest looking at the 
driveshaft center bearing support.  By that I mean the large rubber bushing 
that surrounds that bearing.  It's easily checked by grabbing the 
driveshaft near that bearing and seeing how much movement that bushing 
allows.  Often times you'll see that the rubber has deteriorated and has 
separated from its outer mounting bracket.  When  that problem exists, 
usually you'll hear or feel the clunk from the area of the handbrake, more 
evident in earlier cars because they've got less padding/carpet/console in 
that area of the interior.

Another possibility could be the bearing in the nose of the differential, 
and if it's bad its seal likely is, too, and you'll see the oil 
leak.  Finally, the gear lash in the differential gears might be too 
loose.  The last two problems should only be looked at by an Alfa shop, but 
the center support can be repaired by a good driveshaft shop.

Regards,

Dean
Lutz, FL
'74 & '87 Spider Veloce's


At 05:13 PM 9/4/2003, you wrote:

> Date: Thu, 4 Sep 2003 08:03:07 -0500
> From: "Robert Block" <rhblock@domain.elided>
> Subject: [alfa] Glunk in Rear End
>
> I own a 1987 Quad. I recently had the u-joints replaced because of a glunk 
> when I shifted. The glunk still persists sometimes when I shift from first 
> to second and my mechanic says that it may be from bent differential.
>
> Anyone have any advise?
>
> Bob Block
> 1987 Quad
> rhblock@domain.elided
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