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Re: [Fot] Dif. noise

To: Scott Janzen <sjanzen@me.com>
Subject: Re: [Fot] Dif. noise
From: Rick McCurdy via Fot <fot@autox.team.net>
Date: Wed, 19 Aug 2020 16:40:23 -0400
Cc: 'Friends of Triumph' Triumph <fot@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
References: <3A5495D6-D4D7-43B7-8480-9DFF9CC655E7@me.com>
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Are your kids in the back?

> On Aug 19, 2020, at 2:11 PM, Scott Janzen via Fot <fot@autox.team.net> wro=
te:
>=20
> =EF=BB=BFouch.  Even in the late 1970s, $200 did not get you much.  Beater=
s, we called them.
>=20
>> On Aug 19, 2020, at 2:00 PM, John H. Hasty <jhasty@mhc-law.com> wrote:
>>=20
>> Gee Scott, given your age, a $200 car would have been a fairly current mo=
del back then!
>>=20
>> Sent from my iPhone
>>=20
>> On Aug 19, 2020, at 1:52 PM, Scott Janzen via Fot <fot@autox.team.net> wr=
ote:
>>=20
>> =EF=BB=BF well, there is the "ignore it" approach.  If you have a spare d=
iff or three, no big deal - you could drive 'til it craps out, though at tha=
t point a rebuild is probably out of the question! =20
>> Back in the old days in Pittsburgh, when I got a $200 car every winter to=
 drive through the ice, salt and potholes, there was no maintenance, as long=
 as it started.  Of course, that=E2=80=99s because I was preserving my sport=
s car in the garage.
>>=20
>> On Aug 19, 2020, at 1:47 PM, McKearn McKearn <mckearn2@gmail.com> wrote:
>>=20
>> Thanks for the replies. (Some of you :)
>>    I was pretty much planning to pull it apart again but was hoping someo=
ne would humor me into not worrying about it ..
>>                                         P.J.
>>=20
>>  =20
>>=20
>>> 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 e=
xamine on the bench. =20
>>>=20
>>> On Aug 19, 2020, at 11:48 AM, vfracing--- via Fot <fot@autox.team.net> w=
rote:
>>>=20
>>> 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 fr=
om the differential. Wheel bearings can be checked by pitching the car side t=
o side (no traffic, wide open parking lot) to change the loading and hence t=
he level of whine.
>>>=20
>>> But Bob is right: check it out NOW. The cover and perhaps the carrier sh=
ould be pulled and a visual inspection made.  Look for pitting on the bearin=
gs and gear teeth, check the pattern (before pulling the carrier) with Bluin=
g Compound (or, lacking that, bright colored paint)
>>>=20
>>> Hopefully it's just a bearing,
>>>=20
>>> Phil Gott
>>>=20
>>>=20
>>> -----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
>>>=20
>>> CHECK IT BEFORE YOU DESTROY IT.=20
>>>=20
>>> Whining is because the gears aren't meshing properly. This will result i=
n premature wear if you're lucky. If you are not lucky, you'll overheat the d=
iff 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.
>>>=20
>>> And keep in mind that scrap steel prices are "fairly low".
>>>=20
>>> Regards,
>>> Bob Lang
>>>=20
>>>=20
>>> On Wednesday, August 19, 2020, 10:59:08 AM EDT, McKearn McKearn via Fot <=
fot@autox.team.net> wrote:
>>>=20
>>>=20
>>> 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 ( Ther=
e is no whine when accelerating or decelerating).   Stock 3.27:1 rear end.
>>>                                                            Any thoughts ?=

>>>                                   Thanks Pat
>>> _______________________________________________
>>> fot@autox.team.net
>>>=20
>>> http://www.fot-racing.com
>>>=20
>>> Donate: http://www.team.net/donate.html
>>> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot=

>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/robertlang=
tr6@yahoo.com
>>>=20
>>>=20
>>> _______________________________________________
>>> fot@autox.team.net
>>>=20
>>> http://www.fot-racing.com
>>>=20
>>> Donate: http://www.team.net/donate.html
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>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/vfracing@a=
ol.com
>>>=20
>>>=20
>>> _______________________________________________
>>> fot@autox.team.net
>>>=20
>>> http://www.fot-racing.com
>>>=20
>>> Donate: http://www.team.net/donate.html
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>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/sjanzen@me=
.com
>>>=20
>>>=20
>>>=20
>>=20
>> _______________________________________________
>> fot@autox.team.net
>>=20
>> http://www.fot-racing.com
>>=20
>> Donate: http://www.team.net/donate.html
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>> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/jhasty@mhc-=
law.com
>>=20
>>=20
>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
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om
>=20
>=20

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div dir=3D"ltr">Are your kids in the back?=
</div><div dir=3D"ltr"><br><blockquote type=3D"cite">On Aug 19, 2020, at 2:1=
1 PM, Scott Janzen via Fot &lt;fot@autox.team.net&gt; wrote:<br><br></blockq=
uote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<meta http-eq=
uiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8">ouch. &nbsp;Even=
 in the late 1970s, $200 did not get you much. &nbsp;Beaters, we called them=
.<br class=3D""><div><br class=3D""><div class=3D"">On Aug 19, 2020, at 2:00=
 PM, John H. Hasty &lt;<a href=3D"mailto:jhasty@mhc-law.com"; class=3D"">jhas=
ty@mhc-law.com</a>&gt; wrote:</div><br class=3D"Apple-interchange-newline"><=
div class=3D"">

<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8" cla=
ss=3D"">

<div dir=3D"auto" class=3D"">
Gee Scott, given your age, a $200 car would have been a fairly current model=
 back then!<br class=3D"">
<br class=3D"">
<div dir=3D"ltr" class=3D"">Sent from my iPhone</div>
<div dir=3D"ltr" class=3D""><br class=3D"">
<blockquote type=3D"cite" class=3D"">On Aug 19, 2020, at 1:52 PM, Scott Janz=
en via Fot &lt;<a href=3D"mailto:fot@autox.team.net"; class=3D"">fot@autox.te=
am.net</a>&gt; wrote:<br class=3D"">
<br class=3D"">
</blockquote>
</div>
<blockquote type=3D"cite" class=3D"">
<div dir=3D"ltr" class=3D"">=EF=BB=BF well, there is the "ignore it" approac=
h. &nbsp;If you have a spare diff or three, no big deal - you could drive 't=
il it craps out, though at that point a rebuild is probably out of the quest=
ion! &nbsp;
<div class=3D"">Back in the old days in Pittsburgh, when I got a $200 car ev=
ery winter to drive through the ice, salt and potholes, there was no mainten=
ance, as long as it started. &nbsp;Of course, that=E2=80=99s because I was p=
reserving my sports car in the garage.<br class=3D"">
<div class=3D""><br class=3D"">
<div class=3D"">On Aug 19, 2020, at 1:47 PM, McKearn McKearn &lt;<a href=3D"=
mailto:mckearn2@gmail.com"; class=3D"">mckearn2@gmail.com</a>&gt; wrote:</div=
>
<br class=3D"Apple-interchange-newline">
<div class=3D"">
<div dir=3D"ltr" class=3D"">
<div class=3D"">Thanks for the replies. (Some of you :)</div>
<div class=3D"">&nbsp;&nbsp; I was pretty much planning to pull it apart aga=
in but was hoping someone would humor me into not worrying about it ..</div>=

<div class=3D"">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; P.J.</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">&nbsp;&nbsp;</div>
</div>
<br class=3D"">
<div class=3D"gmail_quote">
<div class=3D"gmail_attr" dir=3D"ltr">On Wed, Aug 19, 2020 at 10:52 AM Scott=
 Janzen &lt;<a href=3D"mailto:sjanzen@me.com"; class=3D"">sjanzen@me.com</a>&=
gt; wrote:<br class=3D"">
</div>
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;padding-=
left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-lef=
t-style:solid">
<div style=3D"overflow-wrap: break-word;" class=3D"">You can=E2=80=99t reall=
y =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. &nbs=
p;<br class=3D"">
<div class=3D""><br class=3D"">
<div class=3D"">On Aug 19, 2020, at 11:48 AM, vfracing--- via Fot &lt;<a hre=
f=3D"mailto:fot@autox.team.net"; target=3D"_blank" class=3D"">fot@autox.team.=
net</a>&gt; wrote:</div>
<br class=3D"">
<div class=3D"">
<div style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt" class=3D=
"">
<div style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt" class=3D=
"">Pat;</div>
<div style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt" class=3D=
"">If it's a stock set up from the factory, my first suspicion would be one o=
f the differential carrier bearings.&nbsp; 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 park=
ing lot) to change the loading and hence the level of whine.</div>
<div style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt" class=3D=
""><br class=3D"">
</div>
<div style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt" class=3D=
"">But Bob is right: check it out NOW. The cover and perhaps the carrier sho=
uld be pulled and a visual inspection made.&nbsp; Look for pitting on the be=
arings 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" class=3D=
""><br class=3D"">
</div>
<div style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt" class=3D=
"">Hopefully it's just a bearing,</div>
<div style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt" class=3D=
""><br class=3D"">
</div>
<div style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt" class=3D=
"">Phil Gott</div>
<div style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt" class=3D=
""><br class=3D"">
<br class=3D"">
-----Original Message-----<br class=3D"">
From: Robert Lang via Fot &lt;<a href=3D"mailto:fot@autox.team.net"; target=3D=
"_blank" class=3D"">fot@autox.team.net</a>&gt;<br class=3D"">
To: FOT list &lt;<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank" cla=
ss=3D"">fot@autox.team.net</a>&gt;; McKearn McKearn &lt;<a href=3D"mailto:mc=
kearn2@gmail.com" target=3D"_blank" class=3D"">mckearn2@gmail.com</a>&gt;<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"gmail-m_1305250608599246961yiv9913073415" class=3D"">
<div class=3D"">
<div style=3D"font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-siz=
e:13px" class=3D"">
<div class=3D""></div>
<div dir=3D"ltr" class=3D"">CHECK IT BEFORE YOU DESTROY IT. <br clear=3D"non=
e" 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 prop=
erly. This will result in premature wear if you're lucky. If you are not luc=
ky, you'll overheat the diff and / or otherwise destroy it. Sometimes the no=
ise 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 t=
hat 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 "fa=
irly 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>
</div>
<div id=3D"gmail-m_1305250608599246961yiv9913073415ydp256e4462yahoo_quoted_7=
989025310" class=3D"">
<div style=3D"color:rgb(38,40,42);font-family:&quot;Helvetica Neue&quot;,Hel=
vetica,Arial,sans-serif;font-size:13px" class=3D"">
<div id=3D"gmail-m_1305250608599246961yiv9913073415yqt68010" class=3D"">
<div class=3D"">On Wednesday, August 19, 2020, 10:59:08 AM EDT, McKearn McKe=
arn via Fot &lt;<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank" clas=
s=3D"">fot@autox.team.net</a>&gt; 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"gmail-m_1305250608599246961yiv9913073415ydp256e4462yiv0720270631"=
 class=3D"">
<div dir=3D"ltr" class=3D"">
<div class=3D"">Hi All.</div>
<div class=3D"">&nbsp; I am hearing some whining going on behind me when dri=
ving my 68 GT6..</div>
<div class=3D"">&nbsp;It is only at neutral acceleration/deceleration and ab=
ove 40 MPH ( There is no whine when accelerating or decelerating). &nbsp; St=
ock 3.27:1 rear end.</div>
<div class=3D"">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; Any=
 thoughts ?</div>
<div class=3D"">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Thanks Pat</div>
</div>
</div>
_______________________________________________<br clear=3D"none" class=3D""=
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