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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 the bench. =20
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 =
and 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.=20
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 =
damage 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
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D"">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 the bench. <br class=3D""><div><br =
class=3D""><div class=3D"">On Aug 19, 2020, at 11:48 AM, vfracing--- via =
Fot <<a href=3D"mailto:fot@autox.team.net"; =
class=3D"">fot@autox.team.net</a>> wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div =
style=3D"font-size: 10pt; font-family: arial, helvetica, sans-serif;" =
class=3D""><div style=3D"font-family: arial, helvetica, sans-serif; =
font-size: 10pt;" data-mce-style=3D"font-family: =
arial,helvetica,sans-serif; font-size: 10pt; color: black;" =
class=3D"">Pat;</div><div style=3D"font-family: arial, helvetica, =
sans-serif; font-size: 10pt;" data-mce-style=3D"font-family: =
arial,helvetica,sans-serif; font-size: 10pt; color: black;" class=3D"">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 and hence the level of whine.</div><div style=3D"font-family: =
arial, helvetica, sans-serif; font-size: 10pt;" =
data-mce-style=3D"font-family: arial,helvetica,sans-serif; font-size: =
10pt; color: black;" class=3D""><br class=3D""></div><div =
style=3D"font-family: arial, helvetica, sans-serif; font-size: 10pt;" =
data-mce-style=3D"font-family: arial,helvetica,sans-serif; font-size: =
10pt; color: black;" class=3D"">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)<br class=3D""></div><div style=3D"font-family:=
arial, helvetica, sans-serif; font-size: 10pt;" =
data-mce-style=3D"font-family: arial,helvetica,sans-serif; font-size: =
10pt; color: black;" class=3D""><br class=3D""></div><div =
style=3D"font-family: arial, helvetica, sans-serif; font-size: 10pt;" =
data-mce-style=3D"font-family: arial,helvetica,sans-serif; font-size: =
10pt; color: black;" class=3D"">Hopefully it's just a bearing,</div><div =
style=3D"font-family: arial, helvetica, sans-serif; font-size: 10pt;" =
data-mce-style=3D"font-family: arial,helvetica,sans-serif; font-size: =
10pt; color: black;" class=3D""><br class=3D""></div><div =
style=3D"font-family: arial, helvetica, sans-serif; font-size: 10pt;" =
data-mce-style=3D"font-family: arial,helvetica,sans-serif; font-size: =
10pt; color: black;" class=3D"">Phil Gott</div><div style=3D"font-family: =
arial, helvetica, sans-serif; font-size: 10pt;" =
data-mce-style=3D"font-family: arial,helvetica,sans-serif; font-size: =
10pt; color: black;" class=3D""><br class=3D""><br =
class=3D"">-----Original Message-----<br class=3D"">From: Robert Lang =
via Fot <<a href=3D"mailto:fot@autox.team.net"; =
class=3D"">fot@autox.team.net</a>><br class=3D"">To: FOT list <<a =
href=3D"mailto:fot@autox.team.net"; class=3D"">fot@autox.team.net</a>>; =
McKearn McKearn <<a href=3D"mailto:mckearn2@gmail.com"; =
class=3D"">mckearn2@gmail.com</a>><br class=3D"">Sent: Wed, Aug 19, =
2020 11:39 am<br class=3D"">Subject: Re: [Fot] Dif. noise<br =
class=3D""><br class=3D""></div><div id=3D"yiv9913073415" class=3D""><div =
class=3D""><div class=3D"yiv9913073415ydp8433395byahoo-style-wrap" =
style=3D"font-family: Helvetica Neue, Helvetica, Arial, sans-serif; =
font-size: 13px;" data-mce-style=3D"font-family: Helvetica Neue, =
Helvetica, Arial, sans-serif; font-size: 13px;"><div class=3D""></div>
<div dir=3D"ltr" class=3D"">CHECK IT BEFORE YOU DESTROY IT. <br =
clear=3D"none" class=3D""></div><div dir=3D"ltr" class=3D""><br =
clear=3D"none" class=3D""></div><div dir=3D"ltr" class=3D"">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 damage to =
everything. Not that I've done that or anything.<br clear=3D"none" =
class=3D""></div><div dir=3D"ltr" class=3D""><br clear=3D"none" =
class=3D""></div><div dir=3D"ltr" class=3D"">And keep in mind that scrap =
steel prices are "fairly low".</div><div dir=3D"ltr" class=3D""><br =
clear=3D"none" class=3D""></div><div dir=3D"ltr" =
class=3D"">Regards,</div><div dir=3D"ltr" class=3D"">Bob Lang</div><div =
dir=3D"ltr" class=3D""><br clear=3D"none" class=3D""></div><div =
class=3D""><br clear=3D"none" class=3D""></div>
=20
</div><div class=3D"yiv9913073415ydp256e4462yahoo_quoted" =
id=3D"yiv9913073415ydp256e4462yahoo_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;" class=3D"">
=20
<div class=3D"yiv9913073415yqt6610842803" =
id=3D"yiv9913073415yqt68010"><div class=3D"">
On Wednesday, August 19, 2020, 10:59:08 AM EDT, =
McKearn McKearn via Fot <<a href=3D"mailto:fot@autox.team.net"; =
class=3D"">fot@autox.team.net</a>> wrote:
</div>
<div class=3D""><br clear=3D"none" class=3D""></div>
<div class=3D""><br clear=3D"none" class=3D""></div>
<div class=3D""><div =
id=3D"yiv9913073415ydp256e4462yiv0720270631" class=3D""><div dir=3D"ltr" =
class=3D""><div class=3D"">Hi All.</div><div class=3D""> I am =
hearing some whining going on behind me when driving my 68 =
GT6..</div><div class=3D""> 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.</div><div =
class=3D""> =
=
=
Any thoughts ?</div><div class=3D""> =
=
Thanks Pat</div></div>
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