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Re: [TR] [6pack] Rear end clunk

from [Robert Rochlin] [Permanent Link][Original]
To: Greg Lemon <grglmn@gmail.com>
Subject: Re: [TR] [6pack] Rear end clunk
From: Robert Rochlin <rrochlin@comcast.net>
Date: Thu, 27 Jan 2022 13:21:33 -0500
Cc: Triumphs <triumphs@autox.team.net>, Alex & Janet Thomson <aljlthomson@charter.net>
Delivered-to: mharc@autox.team.net
Delivered-to: triumphs@autox.team.net
References: <20220127.094328.29883.0@webmail11.dca.untd.com> <004401d8138f$8709d810$951d8830$@charter.net> <CAFtw3aY+MnK_WwztQ8hJmsNCbRD+hEg0CvNdHWPLmUL+GoesmA@mail.gmail.com> <002201d813a3$23caa630$6b5ff290$@msystech.com> <CAFtw3abcNkTP+F-m-HFkS6H0OyEdWQV_nbkdho4fgCOauEUZyg@mail.gmail.com> 
--===============5228168892675654171==
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  So I remember reading, I believe on the list, that when the ring and =
pinions as original from Triumph were manufactured that they were run =
with a compound that bedded the ring and pinion as a =E2=80=9Cset=E2=80=9D=
 and that this considerably reduced differential howl. I think that the =
thread was to the effect that the new ring and pinion sets were not =
=E2=80=9Cmatched and thus a lot louder.
        Does anyone know (remember) if this is correct?
        Best,
        Bob
        =E2=80=9972 TR6

> On Jan 27, 2022, at 1:05 PM, Greg Lemon <grglmn@gmail.com> wrote:
>=20
> Meant to add, everything was bolt on parts, pretty easy.  A =
transmission jack is a good idea, I used to horse the things up from =
under the car by myself, but those days are gone.  I fabricated a wooden =
cradle that I attached to my regular floor jack when I put mine in.
>=20
> I had some tight clearances with my dual exhaust, but it is not stock.
>=20
> Greg
>=20
> On Thu, Jan 27, 2022, 11:27 AM Jeff Nathanson <jeffn@msystech.com =
> Greg,
>=20
> =20
>=20
> Was this an easy job to retrofit? Or did it require any modifications?
>=20
> =20
>=20
> Thanks,
>=20
> Jeff N.
>=20
> =E2=80=9972 TR6
>=20
> =20
>=20
> From: Triumphs [mailto:triumphs-bounces@autox.team.net =
> Sent: Thursday, January 27, 2022 10:28 AM
> To: Alex & Janet Thomson <aljlthomson@charter.net =
> Subject: Re: [TR] [6pack] Rear end clunk
>=20
> =20
>=20
> I chased after a "rear end" clunk for years.  Decided it was in the =
differential, and decided to replace it with a Nissan R200 limited slip =
after replacing u-joints and checking mounts many times.  When I was =
installing the differential and new, shortened drive shaft I discovered =
one of the transmission mount bolts had gone missing.
>=20
> =20
>=20
> If you are not finding it, may be worth expanding your search, =
however, the only when cold thing is a bit of a head scratcher.
>=20
> =20
>=20
> BTW, very glad I did the diff swap, even though it was not the cause =
of the clunk, car is much quieter, especially  with the top up.
>=20
> =20
>=20
> Greg Lemon
>=20
> TR250
>=20
> =20
>=20
> On Thu, Jan 27, 2022, 9:10 AM Alex & Janet Thomson =
>=20
> Don=E2=80=99t rule out worn driveshaft U-joints or worn/loose mounting =
bushings on the differential itself.
>=20
> =20
>=20
> Alex Thomson
>=20
> =20
>=20
> From: 6pack [mailto:6pack-bounces@autox.team.net =
> Sent: Thursday, January 27, 2022 9:43 AM
> Subject: [6pack] Rear end clunk
>=20
> =20
>=20
> Twenty years of rear end clunk when I put it in reverse with cold =
engine and I'm tired of it. But as soon as the engine warms up it =
disappears and i dismiss it. Do I bite the bullet and get it checked =
out? I'm sure my mechanic will say get it fixed. And how much do you =
think a repaired rear end will cost me?=20
>=20
> =20
>=20
> Al in CT with 74 French Blue
>=20
>=20
>=20
> ____________________________________________________________
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>=20
>=20
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>=20
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>=20
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--Apple-Mail=_F6D9AF8C-FE31-4478-B3BD-335B7E89FC25
Content-Transfer-Encoding: quoted-printable
        charset=utf-8

<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"">&nbsp; So I remember reading, I believe on the list, that =
when the ring and pinions as original from Triumph were manufactured =
that they were run with a compound that bedded the ring and pinion as a =
=E2=80=9Cset=E2=80=9D and that this considerably reduced differential =
howl. I think that the thread was to the effect that the new ring and =
pinion sets were not =E2=80=9Cmatched and thus a lot louder.<div =
class=3D""><span class=3D"Apple-tab-span" style=3D"white-space:pre">    =
</span>Does anyone know (remember) if this is correct?</div><div =
class=3D""><span class=3D"Apple-tab-span" style=3D"white-space:pre">    =
</span>Best,</div><div class=3D""><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">      </span>Bob</div><div class=3D""><span =
class=3D"Apple-tab-span" style=3D"white-space:pre">     </span>=E2=80=9972=
 TR6<br class=3D""><div><br class=3D""><blockquote type=3D"cite" =
class=3D""><div class=3D"">On Jan 27, 2022, at 1:05 PM, Greg Lemon =
&lt;<a href=3D"mailto:grglmn@gmail.com"; =
class=3D"">grglmn@gmail.com</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div dir=3D"auto" =
class=3D"">Meant to add, everything was bolt on parts, pretty =
easy.&nbsp; A transmission jack is a good idea, I used to horse the =
things up from under the car by myself, but those days are gone.&nbsp; I =
fabricated a wooden cradle that I attached to my regular floor jack when =
I put mine in.<div dir=3D"auto" class=3D""><br class=3D""></div><div =
dir=3D"auto" class=3D"">I had some tight clearances with my dual =
exhaust, but it is not stock.</div><div dir=3D"auto" class=3D""><br =
class=3D""></div><div dir=3D"auto" class=3D"">Greg</div></div><br =
class=3D""><div class=3D"gmail_quote"><div dir=3D"ltr" =
class=3D"gmail_attr">On Thu, Jan 27, 2022, 11:27 AM Jeff Nathanson =
&lt;<a href=3D"mailto:jeffn@msystech.com"; =
class=3D"">jeffn@msystech.com</a>&gt; wrote:<br =
class=3D""></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 =
.8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang=3D"EN-US" =
link=3D"blue" vlink=3D"purple" class=3D""><div =
class=3D"m_-477123215316727118WordSection1"><p class=3D"MsoNormal"><span =
style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;color=
:#1f497d" class=3D"">Greg,<u class=3D""></u><u =
class=3D""></u></span></p><p class=3D"MsoNormal"><span =
style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;color=
:#1f497d" class=3D""><u class=3D""></u>&nbsp;<u =
class=3D""></u></span></p><p class=3D"MsoNormal"><span =
style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;color=
:#1f497d" class=3D"">Was this an easy job to retrofit? Or did it require =
any modifications?<u class=3D""></u><u class=3D""></u></span></p><p =
class=3D"MsoNormal"><span =
style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;color=
:#1f497d" class=3D""><u class=3D""></u>&nbsp;<u =
class=3D""></u></span></p><p class=3D"MsoNormal"><span =
style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;color=
:#1f497d" class=3D"">Thanks,<u class=3D""></u><u =
class=3D""></u></span></p><p class=3D"MsoNormal"><span =
style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;color=
:#1f497d" class=3D"">Jeff N.<u class=3D""></u><u =
class=3D""></u></span></p><p class=3D"MsoNormal"><span =
style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;color=
:#1f497d" class=3D"">=E2=80=9972 TR6<u class=3D""></u><u =
class=3D""></u></span></p><p class=3D"MsoNormal"><span =
style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;color=
:#1f497d" class=3D""><u class=3D""></u>&nbsp;<u =
class=3D""></u></span></p><p class=3D"MsoNormal"><b class=3D""><span =
style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif" =
class=3D"">From:</span></b><span =
style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif" =
class=3D""> Triumphs [mailto:<a =
href=3D"mailto:triumphs-bounces@autox.team.net"; target=3D"_blank" =
rel=3D"noreferrer" class=3D"">triumphs-bounces@autox.team.net</a>] <b =
class=3D"">On Behalf Of </b>Greg Lemon<br class=3D""><b =
class=3D"">Sent:</b> Thursday, January 27, 2022 10:28 AM<br class=3D""><b =
class=3D"">To:</b> Alex &amp; Janet Thomson &lt;<a =
href=3D"mailto:aljlthomson@charter.net"; target=3D"_blank" =
rel=3D"noreferrer" class=3D"">aljlthomson@charter.net</a>&gt;; Triumphs =
&lt;<a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank" =
rel=3D"noreferrer" class=3D"">triumphs@autox.team.net</a>&gt;<br =
class=3D""><b class=3D"">Subject:</b> Re: [TR] [6pack] Rear end clunk<u =
class=3D""></u><u class=3D""></u></span></p><p class=3D"MsoNormal"><u =
class=3D""></u>&nbsp;<u class=3D""></u></p><div class=3D""><p =
class=3D"MsoNormal">I chased after a "rear end" clunk for years.&nbsp; =
Decided it was in the differential, and decided to replace it with a =
Nissan R200 limited slip after replacing u-joints and checking mounts =
many times.&nbsp; When I was installing the differential and new, =
shortened drive shaft I discovered one of the transmission mount bolts =
had gone missing.<u class=3D""></u><u class=3D""></u></p><div =
class=3D""><p class=3D"MsoNormal"><u class=3D""></u>&nbsp;<u =
class=3D""></u></p></div><div class=3D""><p class=3D"MsoNormal">If you =
are not finding it, may be worth expanding your search, however, the =
only when cold thing is a bit of a head scratcher.<u class=3D""></u><u =
class=3D""></u></p></div><div class=3D""><p class=3D"MsoNormal"><u =
class=3D""></u>&nbsp;<u class=3D""></u></p></div><div class=3D""><p =
class=3D"MsoNormal">BTW, very glad I did the diff swap, even though it =
was not the cause of the clunk, car is much quieter, especially&nbsp; =
with the top up.<u class=3D""></u><u class=3D""></u></p></div><div =
class=3D""><p class=3D"MsoNormal"><u class=3D""></u>&nbsp;<u =
class=3D""></u></p></div><div class=3D""><p class=3D"MsoNormal">Greg =
Lemon<u class=3D""></u><u class=3D""></u></p></div><div class=3D""><p =
class=3D"MsoNormal">TR250<u class=3D""></u><u =
class=3D""></u></p></div></div><p class=3D"MsoNormal"><u =
class=3D""></u>&nbsp;<u class=3D""></u></p><div class=3D""><div =
class=3D""><p class=3D"MsoNormal">On Thu, Jan 27, 2022, 9:10 AM Alex =
&amp; Janet Thomson &lt;<a href=3D"mailto:aljlthomson@charter.net"; =
target=3D"_blank" rel=3D"noreferrer" =
class=3D"">aljlthomson@charter.net</a>&gt; wrote:<u class=3D""></u><u =
class=3D""></u></p></div><blockquote =
style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in" class=3D""><div class=3D""><div =
class=3D""><p class=3D"MsoNormal"><span =
style=3D"font-family:&quot;Calibri&quot;,sans-serif;color:#1f497d" =
class=3D"">Don=E2=80=99t rule out worn driveshaft U-joints or worn/loose =
mounting bushings on the differential itself.</span><u class=3D""></u><u =
class=3D""></u></p><p class=3D"MsoNormal"><span =
style=3D"font-family:&quot;Calibri&quot;,sans-serif;color:#1f497d" =
class=3D"">&nbsp;</span><u class=3D""></u><u class=3D""></u></p><p =
class=3D"MsoNormal"><span =
style=3D"font-family:&quot;Calibri&quot;,sans-serif;color:#1f497d" =
class=3D"">Alex Thomson</span><u class=3D""></u><u class=3D""></u></p><p =
class=3D"MsoNormal"><span =
style=3D"font-family:&quot;Calibri&quot;,sans-serif;color:#1f497d" =
class=3D"">&nbsp;</span><u class=3D""></u><u class=3D""></u></p><p =
class=3D"MsoNormal"><b class=3D""><span =
style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-serif" =
class=3D"">From:</span></b><span =
style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-serif" =
class=3D""> 6pack [mailto:<a href=3D"mailto:6pack-bounces@autox.team.net"; =
target=3D"_blank" rel=3D"noreferrer" =
class=3D"">6pack-bounces@autox.team.net</a>] <b class=3D"">On Behalf Of =
</b><a href=3D"mailto:otral@juno.com"; target=3D"_blank" rel=3D"noreferrer"=
 class=3D"">otral@juno.com</a><br class=3D""><b class=3D"">Sent:</b> =
Thursday, January 27, 2022 9:43 AM<br class=3D""><b class=3D"">To:</b> =
<a href=3D"mailto:6pack@autox.team.net"; target=3D"_blank" =
rel=3D"noreferrer" class=3D"">6pack@autox.team.net</a><br class=3D""><b =
class=3D"">Subject:</b> [6pack] Rear end clunk</span><u class=3D""></u><u =
class=3D""></u></p><p class=3D"MsoNormal">&nbsp;<u class=3D""></u><u =
class=3D""></u></p><div class=3D""><p class=3D"MsoNormal">Twenty years =
of rear end clunk when I put it in reverse with cold engine and I'm =
tired of it. But as soon as the engine warms up it disappears and i =
dismiss it. Do I bite the bullet and get it checked out? I'm sure my =
mechanic will say get it fixed. And how much do you think a repaired =
rear end will cost me?&nbsp;<u class=3D""></u><u =
class=3D""></u></p></div><div class=3D""><p class=3D"MsoNormal">&nbsp;<u =
class=3D""></u><u class=3D""></u></p></div><div class=3D""><p =
class=3D"MsoNormal">Al in CT with 74 French Blue<u class=3D""></u><u =
class=3D""></u></p></div><p class=3D"MsoNormal"><br class=3D""><br =
class=3D""><span style=3D"font-size: 10pt;" =
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