<VV> Rear end/axle noise

[Western Canada CORSA]

And ONLY GM Posiadditive.  I had exactly the same symptoms in a freshly
rebuilt diff where to not spare any expense, I put an aftermarket high
dollar additive in.  One little bottle of the GM stuff and the noise went
away forever.

Regards,
Joel

-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of Barneck Doug C TIGTA
Sent: Monday, July 07, 2008 2:18 PM
To: virtualvairs at corvair.org
Subject: <VV> Rear end/axle noise


My sons 65 Corsa vert is making a noise in the back end.  It has a 3:55 posi
rearend with 4 spd trans.  Both have been rebuilt by a very knowledgable
Corvair expert.  When he slowly starts out he is getting a ringing coming
from the rear axle shaft/drum.  The ringing sounds like a resonance of the
axcle shaft.  The u-joints are brand new spicer joints but could possibly be
bad after 50 miles.  There is no play in the u-joints when elevated and
turned back and forth.  If I stand to the side, He just has to barely move
and I can see the rim actually ring/slip as it moves forward.  It is a
repeated sound, not like a one time bang from a u-joint.  More like you had
brakes on all the way and trying to move it and it will turn an inch at a
time in jumps.  I have backed off the brakes to verify that they aren't
hanging up.  I don't get any play out of the u-joints.  I am thinking that
it is the posi plates binding up and not slipping.  My son said if moving
straight forward it doesn't do it but just a little to the side and it will
make the noise.  It does not seem to happen when moving faster that 2-3 mph.
I don't think I forgot to put in the posi-additive but that was my first
thought.... Any other thoughts, insight or things to look at?

Doug Barneck
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