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

To: Jeff Nathanson <jeffn@msystech.com>
Subject: Re: [TR] [6pack] Rear end clunk
From: Dave Connitt <dconnitt@fuse.net>
Date: Thu, 27 Jan 2022 12:45:38 -0500
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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: <002201d813a3$23caa630$6b5ff290$@msystech.com>
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Hi Jeff,
I ended up replacing/upgrading my worn out TR4A IRS differential plus Richar=
d Good rear hubs and CV style half shafts by myself. I would definitely reco=
mmend buying or borrowing a transmission jack. I picked up one from Harbor Fre=
ight for less than $100.00.
It was definitely worth it. Also look for a diff with a 3.688:1 ratio, which=
 is fairly common. I also replaced the pinion and stub axle seals before I i=
nstalled it.
Dave Connitt

Sent from my iPhone

> On Jan 27, 2022, at 12:31 PM, Jeff Nathanson <jeffn@msystech.com> wrote:
>=20
> =EF=BB=BF
> Greg,
> =20
> Was this an easy job to retrofit? Or did it require any modifications?
> =20
> Thanks,
> Jeff N.
> =E2=80=9972 TR6
> =20
> From: Triumphs [mailto:triumphs-bounces@autox.team.net] On Behalf Of Greg L=
emon
> Sent: Thursday, January 27, 2022 10:28 AM
> To: Alex & Janet Thomson <aljlthomson@charter.net>; Triumphs <triumphs@aut=
ox.team.net>
> Subject: Re: [TR] [6pack] Rear end clunk
> =20
> I chased after a "rear end" clunk for years.  Decided it was in the differ=
ential, and decided to replace it with a Nissan R200 limited slip after repl=
acing u-joints and checking mounts many times.  When I was installing the di=
fferential and new, shortened drive shaft I discovered one of the transmissi=
on mount bolts had gone missing.
> =20
> If you are not finding it, may be worth expanding your search, however, th=
e only when cold thing is a bit of a head scratcher.
> =20
> BTW, very glad I did the diff swap, even though it was not the cause of th=
e clunk, car is much quieter, especially  with the top up.
> =20
> Greg Lemon
> TR250
> =20
> On Thu, Jan 27, 2022, 9:10 AM Alex & Janet Thomson <aljlthomson@charter.ne=
t> wrote:
> Don=E2=80=99t rule out worn driveshaft U-joints or worn/loose mounting bus=
hings on the differential itself.
> =20
> Alex Thomson
> =20
> From: 6pack [mailto:6pack-bounces@autox.team.net] On Behalf Of otral@juno.=
com
> Sent: Thursday, January 27, 2022 9:43 AM
> To: 6pack@autox.team.net
> Subject: [6pack] Rear end clunk
> =20
> Twenty years of rear end clunk when I put it in reverse with cold engine a=
nd I'm tired of it. But as soon as the engine warms up it disappears and i d=
ismiss 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 c=
ost me?=20
> =20
> Al in CT with 74 French Blue
>=20
>=20
> ____________________________________________________________
> Choose to be safer online.
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>=20
>=20
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>=20
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>=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">Hi Jeff,<div>I ended up replacing/upgrading=
 my worn out TR4A IRS differential plus Richard Good rear hubs and CV style h=
alf shafts by myself. I would definitely recommend buying or borrowing a tra=
nsmission jack. I picked up one from Harbor Freight for less than $100.00.</=
div><div>It was definitely worth it. Also look for a diff with a 3.688:1 rat=
io, which is fairly common. I also replaced the pinion and stub axle seals b=
efore I installed it.</div><div>Dave Connitt<br><br><div dir=3D"ltr">Sent fr=
om my iPhone</div><div dir=3D"ltr"><br><blockquote type=3D"cite">On Jan 27, 2=
022, at 12:31 PM, Jeff Nathanson &lt;jeffn@msystech.com&gt; wrote:<br><br></=
blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<meta h=
ttp-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8"><meta name=
=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--><div class=3D"WordSection1"><p class=3D"Ms=
oNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,san=
s-serif;color:#1F497D">Greg,<o:p></o:p></span></p><p class=3D"MsoNormal"><sp=
an style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;colo=
r:#1F497D"><o:p>&nbsp;</o:p></span></p><p class=3D"MsoNormal"><span style=3D=
"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;color:#1F497D">=
Was this an easy job to retrofit? Or did it require any modifications?<o:p><=
/o:p></span></p><p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span=
></p><p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quo=
t;Calibri&quot;,sans-serif;color:#1F497D">Thanks,<o:p></o:p></span></p><p cl=
ass=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&=
quot;,sans-serif;color:#1F497D">Jeff N.<o:p></o:p></span></p><p class=3D"Mso=
Normal"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans=
-serif;color:#1F497D">=E2=80=9972 TR6<o:p></o:p></span></p><p class=3D"MsoNo=
rmal"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-s=
erif;color:#1F497D"><o:p>&nbsp;</o:p></span></p><p class=3D"MsoNormal"><b><s=
pan style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif">From:=
</span></b><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,s=
ans-serif"> Triumphs [mailto:triumphs-bounces@autox.team.net] <b>On Behalf O=
f </b>Greg Lemon<br><b>Sent:</b> Thursday, January 27, 2022 10:28 AM<br><b>T=
o:</b> Alex &amp; Janet Thomson &lt;aljlthomson@charter.net&gt;; Triumphs &l=
t;triumphs@autox.team.net&gt;<br><b>Subject:</b> Re: [TR] [6pack] Rear end c=
lunk<o:p></o:p></span></p><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p><div><=
p class=3D"MsoNormal">I chased after a "rear end" clunk for years.&nbsp; Dec=
ided it was in the differential, and decided to replace it with a Nissan R20=
0 limited slip after replacing u-joints and checking mounts many times.&nbsp=
; When I was installing the differential and new, shortened drive shaft I di=
scovered one of the transmission mount bolts had gone missing.<o:p></o:p></p=
><div><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p></div><div><p class=3D"Mso=
Normal">If you are not finding it, may be worth expanding your search, howev=
er, the only when cold thing is a bit of a head scratcher.<o:p></o:p></p></d=
iv><div><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p></div><div><p class=3D"M=
soNormal">BTW, very glad I did the diff swap, even though it was not the cau=
se of the clunk, car is much quieter, especially&nbsp; with the top up.<o:p>=
</o:p></p></div><div><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p></div><div>=
<p class=3D"MsoNormal">Greg Lemon<o:p></o:p></p></div><div><p class=3D"MsoNo=
rmal">TR250<o:p></o:p></p></div></div><p class=3D"MsoNormal"><o:p>&nbsp;</o:=
p></p><div><div><p class=3D"MsoNormal">On Thu, Jan 27, 2022, 9:10 AM Alex &a=
mp; Janet Thomson &lt;<a href=3D"mailto:aljlthomson@charter.net";>aljlthomson=
@charter.net</a>&gt; wrote:<o:p></o:p></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"><div><div><p class=3D"MsoNormal" style=3D"mso-margin-=
top-alt:auto;mso-margin-bottom-alt:auto"><span style=3D"font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D">Don=E2=80=99t rule out worn driveshaft=
 U-joints or worn/loose mounting bushings on the differential itself.</span>=
<o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-m=
argin-bottom-alt:auto"><span style=3D"font-family:&quot;Calibri&quot;,sans-s=
erif;color:#1F497D">&nbsp;</span><o:p></o:p></p><p class=3D"MsoNormal" style=
=3D"mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style=3D"font-=
family:&quot;Calibri&quot;,sans-serif;color:#1F497D">Alex Thomson</span><o:p=
></o:p></p><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margi=
n-bottom-alt:auto"><span style=3D"font-family:&quot;Calibri&quot;,sans-serif=
;color:#1F497D">&nbsp;</span><o:p></o:p></p><p class=3D"MsoNormal" style=3D"=
mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,sans-serif">From:</span></b><span s=
tyle=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,sans-serif"> 6pack [=
mailto:<a href=3D"mailto:6pack-bounces@autox.team.net"; target=3D"_blank">6pa=
ck-bounces@autox.team.net</a>] <b>On Behalf Of </b><a href=3D"mailto:otral@j=
uno.com" target=3D"_blank">otral@juno.com</a><br><b>Sent:</b> Thursday, Janu=
ary 27, 2022 9:43 AM<br><b>To:</b> <a href=3D"mailto:6pack@autox.team.net"; t=
arget=3D"_blank">6pack@autox.team.net</a><br><b>Subject:</b> [6pack] Rear en=
d clunk</span><o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-margin-top-=
alt:auto;mso-margin-bottom-alt:auto">&nbsp;<o:p></o:p></p><div><p class=3D"M=
soNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Twent=
y years of rear end clunk when I put it in reverse with cold engine and I'm t=
ired of it. But as soon as the engine warms up it disappears and i dismiss i=
t. Do I bite the bullet and get it checked out? I'm sure my mechanic will sa=
y get it fixed. And how much do you think a repaired rear end will cost me?&=
nbsp;<o:p></o:p></p></div><div><p class=3D"MsoNormal" style=3D"mso-margin-to=
p-alt:auto;mso-margin-bottom-alt:auto">&nbsp;<o:p></o:p></p></div><div><p cl=
ass=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-alt:aut=
o">Al in CT with 74 French Blue<o:p></o:p></p></div><p class=3D"MsoNormal" s=
tyle=3D"mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><br><br><span st=
yle=3D"font-size:10.0pt;color:black">_______________________________________=
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rial&quot;,sans-serif;color:#004080;text-decoration:none">Choose to be safer=
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