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Pat;If it's a stock set up from the factory, my first suspicion would be on=
e of the differential carrier bearings. =C2=A0That is, if you are certain i=
t is from the differential. Wheel bearings can be checked by pitching the c=
ar side to side (no traffic, wide open parking lot) to change the loading a=
nd hence the level of whine.
But Bob is right: check it out NOW. The cover and perhaps the carrier shoul=
d be pulled and a visual inspection made. =C2=A0Look for pitting on the bea=
rings and gear teeth, check the pattern (before pulling the carrier) with B=
luing Compound (or, lacking that, bright colored paint)
Hopefully it's just a bearing,
Phil Gott
-----Original Message-----
From: Robert Lang via Fot <fot@autox.team.net>
To: FOT list <fot@autox.team.net>; McKearn McKearn <mckearn2@gmail.com>
Sent: Wed, Aug 19, 2020 11:39 am
Subject: Re: [Fot] Dif. noise
CHECK IT BEFORE YOU DESTROY IT.=20
Whining is because the gears aren't meshing properly. This will result in p=
remature wear if you're lucky. If you are not lucky, you'll overheat the di=
ff and / or otherwise destroy it. Sometimes the noise can be from something=
really dumb, like the ring gear bolts backing out and you find out when on=
e of the bolts wedge in the diff case with the resulting damage to everythi=
ng. Not that I've done that or anything.
And keep in mind that scrap steel prices are "fairly low".
Regards,Bob Lang
On Wednesday, August 19, 2020, 10:59:08 AM EDT, McKearn McKearn via Fot=
<fot@autox.team.net> wrote: =20
=20
Hi All.=C2=A0 I am hearing some whining going on behind me when driving my=
68 GT6..=C2=A0It is only at neutral acceleration/deceleration and above 40=
MPH ( There is no whine when accelerating or decelerating). =C2=A0 Stock 3=
.27:1 rear end.=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0=
Any thoughts ?=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Thanks Pat_____=
__________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
@yahoo.com
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
com
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<div style=3D"font-size:10pt;font-family:arial,helvetica,sans-serif;color:b=
lack;"><div style=3D"font-family: arial,helvetica,sans-serif; font-size: 10=
pt; color: black;" data-mce-style=3D"font-family: arial,helvetica,sans-seri=
f; font-size: 10pt; color: black;">Pat;</div><div style=3D"font-family: ari=
al,helvetica,sans-serif; font-size: 10pt; color: black;" data-mce-style=3D"=
font-family: arial,helvetica,sans-serif; font-size: 10pt; color: black;">If=
it's a stock set up from the factory, my first suspicion would be one of t=
he differential carrier bearings. That is, if you are certain it is f=
rom the differential. Wheel bearings can be checked by pitching the car sid=
e to side (no traffic, wide open parking lot) to change the loading and hen=
ce the level of whine.</div><div style=3D"font-family: arial,helvetica,sans=
-serif; font-size: 10pt; color: black;" data-mce-style=3D"font-family: aria=
l,helvetica,sans-serif; font-size: 10pt; color: black;"><br></div><div styl=
e=3D"font-family: arial,helvetica,sans-serif; font-size: 10pt; color: black=
;" data-mce-style=3D"font-family: arial,helvetica,sans-serif; font-size: 10=
pt; color: black;">But Bob is right: check it out NOW. The cover and perhap=
s the carrier should be pulled and a visual inspection made. Look for=
pitting on the bearings and gear teeth, check the pattern (before pulling =
the carrier) with Bluing Compound (or, lacking that, bright colored paint)<=
br></div><div style=3D"font-family: arial,helvetica,sans-serif; font-size: =
10pt; color: black;" data-mce-style=3D"font-family: arial,helvetica,sans-se=
rif; font-size: 10pt; color: black;"><br></div><div style=3D"font-family: a=
rial,helvetica,sans-serif; font-size: 10pt; color: black;" data-mce-style=
=3D"font-family: arial,helvetica,sans-serif; font-size: 10pt; color: black;=
">Hopefully it's just a bearing,</div><div style=3D"font-family: arial,helv=
etica,sans-serif; font-size: 10pt; color: black;" data-mce-style=3D"font-fa=
mily: arial,helvetica,sans-serif; font-size: 10pt; color: black;"><br></div=
><div style=3D"font-family: arial,helvetica,sans-serif; font-size: 10pt; co=
lor: black;" data-mce-style=3D"font-family: arial,helvetica,sans-serif; fon=
t-size: 10pt; color: black;">Phil Gott</div><div style=3D"font-family: aria=
l,helvetica,sans-serif; font-size: 10pt; color: black;" data-mce-style=3D"f=
ont-family: arial,helvetica,sans-serif; font-size: 10pt; color: black;"><br=
><br>-----Original Message-----<br>From: Robert Lang via Fot <fot@autox.=
team.net><br>To: FOT list <fot@autox.team.net>; McKearn McKearn &l=
t;mckearn2@gmail.com><br>Sent: Wed, Aug 19, 2020 11:39 am<br>Subject: Re=
: [Fot] Dif. noise<br><br></div><div id=3D"yiv9913073415"><div><div class=
=3D"yiv9913073415ydp8433395byahoo-style-wrap" style=3D"font-family: Helveti=
ca Neue, Helvetica, Arial, sans-serif; font-size: 13px;" data-mce-style=3D"=
font-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 13px;=
"><div></div>
<div dir=3D"ltr">CHECK IT BEFORE YOU DESTROY IT. <br clear=3D"none"=
></div><div dir=3D"ltr"><br clear=3D"none"></div><div dir=3D"ltr">Whining i=
s because the gears aren't meshing properly. This will result in premature =
wear if you're lucky. If you are not lucky, you'll overheat the diff and / =
or otherwise destroy it. Sometimes the noise can be from something really d=
umb, like the ring gear bolts backing out and you find out when one of the =
bolts wedge in the diff case with the resulting damage to everything. Not t=
hat I've done that or anything.<br clear=3D"none"></div><div dir=3D"ltr"><b=
r clear=3D"none"></div><div dir=3D"ltr">And keep in mind that scrap steel p=
rices are "fairly low".</div><div dir=3D"ltr"><br clear=3D"none"></div><div=
dir=3D"ltr">Regards,</div><div dir=3D"ltr">Bob Lang</div><div dir=3D"ltr">=
<br clear=3D"none"></div><div><br clear=3D"none"></div>
=20
</div><div class=3D"yiv9913073415ydp256e4462yahoo_quoted" id=3D"yiv=
9913073415ydp256e4462yahoo_quoted_7989025310">
<div style=3D"font-family: 'Helvetica Neue', Helvetica, Arial, =
sans-serif; font-size: 13px; color: #26282a;" data-mce-style=3D"font-family=
: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px; color: #=
26282a;">
=20
<div class=3D"yiv9913073415yqt6610842803" id=3D"yiv99130734=
15yqt68010"><div>
On Wednesday, August 19, 2020, 10:59:08 AM EDT, McKearn=
McKearn via Fot <fot@autox.team.net> wrote:
</div>
<div><br clear=3D"none"></div>
<div><br clear=3D"none"></div>
<div><div id=3D"yiv9913073415ydp256e4462yiv0720270631"><div=
dir=3D"ltr"><div>Hi All.</div><div> I am hearing some whining going =
on behind me when driving my 68 GT6..</div><div> It is only at neutral=
acceleration/deceleration and above 40 MPH ( There is no whine when accele=
rating or decelerating). Stock 3.27:1 rear end.</div><div> &nb=
sp; &=
nbsp; =
Any thoughts ?</div><div>&=
nbsp; =
Thanks Pat</div></div>
</div>_______________________________________________<br clear=3D"none"><a =
rel=3D"noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:fot@autox.team=
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</div></div></div><div class=3D"yqt6610842803" id=3D"yqt88997">____=
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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