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Thanks for the replies. (Some of you :)
I was pretty much planning to pull it apart again but was hoping someone
would humor me into not worrying about it ..
P.J.
On Wed, Aug 19, 2020 at 10:52 AM Scott Janzen <sjanzen@me.com> wrote:
> You can=E2=80=99t really =E2=80=9Cpull the cover=E2=80=9D on a Spit/GT6 d=
iff, but it=E2=80=99s easy enough
> to drop the whole diff and much easier to examine on the bench.
>
> On Aug 19, 2020, at 11:48 AM, vfracing--- via Fot <fot@autox.team.net>
> wrote:
>
> Pat;
> If it's a stock set up from the factory, my first suspicion would be one
> of the differential carrier bearings. That is, if you are certain it is
> from the differential. Wheel bearings can be checked by pitching the car
> side to side (no traffic, wide open parking lot) to change the loading an=
d
> hence the level of whine.
>
> But Bob is right: check it out NOW. The cover and perhaps 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)
>
> 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.
>
> Whining is 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 dumb, like the ring gear bolts backing out and you find
> out when one of the bolts wedge in the diff case with the resulting damag=
e
> to everything. 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:
>
>
> Hi All.
> I am hearing some whining going on behind me when driving my 68 GT6..
> It is only at neutral acceleration/deceleration and above 40 MPH ( There
> is no whine when accelerating or decelerating). Stock 3.27:1 rear end.
> Any thoughts ?
> Thanks Pat
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
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>
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
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>
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
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<div dir=3D"ltr"><div>Thanks for the replies. (Some of you :)</div><div>=C2=
=A0=C2=A0 I was pretty much planning to pull it apart again but was hoping =
someone would humor me into not worrying about it ..</div><div>=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 P.J.</div><div><br>=
</div><div>=C2=A0=C2=A0</div></div><br><div class=3D"gmail_quote"><div clas=
s=3D"gmail_attr" dir=3D"ltr">On Wed, Aug 19, 2020 at 10:52 AM Scott Janzen =
<<a href=3D"mailto:sjanzen@me.com";>sjanzen@me.com</a>> wrote:<br></di=
v><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;paddi=
ng-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border=
-left-style:solid"><div style=3D"overflow-wrap: break-word;">You can=E2=80=
=99t really =E2=80=9Cpull the cover=E2=80=9D on a Spit/GT6 diff, but it=E2=
=80=99s easy enough to drop the whole diff and much easier to examine on th=
e bench. =C2=A0<br><div><br><div>On Aug 19, 2020, at 11:48 AM, vfracing--- =
via Fot <<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@aut=
ox.team.net</a>> wrote:</div><br><div><div style=3D"font-family:arial,he=
lvetica,sans-serif;font-size:10pt"><div style=3D"font-family:arial,helvetic=
a,sans-serif;font-size:10pt">Pat;</div><div style=3D"font-family:arial,helv=
etica,sans-serif;font-size:10pt">If it's a stock set up from the factor=
y, my first suspicion would be one of the differential carrier bearings.=C2=
=A0 That is, if you are certain it is from the differential. Wheel bearings=
can be checked by pitching the car side to side (no traffic, wide open par=
king lot) to change the loading and hence the level of whine.</div><div sty=
le=3D"font-family:arial,helvetica,sans-serif;font-size:10pt"><br></div><div=
style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt">But Bob is=
right: check it out NOW. The cover and perhaps the carrier should be pulle=
d and a visual inspection made.=C2=A0 Look for pitting on the bearings and =
gear teeth, check the pattern (before pulling the carrier) with Bluing Comp=
ound (or, lacking that, bright colored paint)<br></div><div style=3D"font-f=
amily:arial,helvetica,sans-serif;font-size:10pt"><br></div><div style=3D"fo=
nt-family:arial,helvetica,sans-serif;font-size:10pt">Hopefully it's jus=
t a bearing,</div><div style=3D"font-family:arial,helvetica,sans-serif;font=
-size:10pt"><br></div><div style=3D"font-family:arial,helvetica,sans-serif;=
font-size:10pt">Phil Gott</div><div style=3D"font-family:arial,helvetica,sa=
ns-serif;font-size:10pt"><br><br>-----Original Message-----<br>From: Robert=
Lang via Fot <<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">f=
ot@autox.team.net</a>><br>To: FOT list <<a href=3D"mailto:fot@autox.t=
eam.net" target=3D"_blank">fot@autox.team.net</a>>; McKearn McKearn <=
<a href=3D"mailto:mckearn2@gmail.com"; target=3D"_blank">mckearn2@gmail.com<=
/a>><br>Sent: Wed, Aug 19, 2020 11:39 am<br>Subject: Re: [Fot] Dif. nois=
e<br><br></div><div id=3D"gmail-m_1305250608599246961yiv9913073415"><div><d=
iv 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 premat=
ure 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 someth=
ing really dumb, 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 every=
thing. Not that I've done that or anything.<br clear=3D"none"></div><di=
v dir=3D"ltr"><br clear=3D"none"></div><div dir=3D"ltr">And keep in mind th=
at scrap steel prices are "fairly low".</div><div dir=3D"ltr"><br=
clear=3D"none"></div><div dir=3D"ltr">Regards,</div><div dir=3D"ltr">Bob L=
ang</div><div dir=3D"ltr"><br clear=3D"none"></div><div><br clear=3D"none">=
</div>
=20
</div><div id=3D"gmail-m_1305250608599246961yiv9913073415ydp256e446=
2yahoo_quoted_7989025310">
<div style=3D"color:rgb(38,40,42);font-family:"Helvetica N=
eue",Helvetica,Arial,sans-serif;font-size:13px">
=20
<div id=3D"gmail-m_1305250608599246961yiv9913073415yqt68010=
"><div>
On Wednesday, August 19, 2020, 10:59:08 AM EDT, McKearn=
McKearn via Fot <<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank=
">fot@autox.team.net</a>> wrote:
</div>
<div><br clear=3D"none"></div>
<div><br clear=3D"none"></div>
<div><div id=3D"gmail-m_1305250608599246961yiv9913073415ydp=
256e4462yiv0720270631"><div dir=3D"ltr"><div>Hi All.</div><div>=C2=A0 I am =
hearing some whining going on behind me when driving my 68 GT6..</div><div>=
=C2=A0It is only at neutral acceleration/deceleration and above 40 MPH ( Th=
ere is no whine when accelerating or decelerating). =C2=A0 Stock 3.27:1 rea=
r end.</div><div>=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 ?</div><div>=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</div></div>
</div>_______________________________________________<br clear=3D"none"><a =
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</div></div></div><div id=3D"gmail-m_1305250608599246961yqt88997">_=
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