Subject: Re: [TR] Timing chain TR4A

From: <[email-masked]>
Date: Sun, 25 Jul 2021 18:36:21 -0400

Jim:  just unbolt the sprocket on the cam and swap out the chains.  Very
straightforward.

Andrew Uprichard
Jackson, Michigan

-----Original Message-----
From: Triumphs <[email-masked]> On Behalf Of Jim Henningsen
Sent: Sunday, July 25, 2021 5:58 PM
To: 'TR List' <[email-masked]>
Subject: [TR] Timing chain TR4A

Ok,
Since I am already down to having all the parts removed to do the timing
cover oil seal and gasket, I am thinking of just doing the chain.  I believe
it has been changed once, the gap is 8mm per the factory manual which is
less than the 10mm recommended for a change.  Tensioner still looks shiny
without much wear from chain at all.  I have bever changed the chain.  Have
the sprockets aligned at TDC marks.  How do I 1) remove the chain and 2)
install the new one.  Does a link pin get removed?  Any help would be
greatly appreciated!
Jim henningsen
Ocala, FL
61 3A "Lord Neville"
67 4A "Sir Charles"  named in honor of Charles Runyan
75 6  "Ms. Molly"  She is a bit butch
81 8 "Sir Stirling"

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From: Greg Lemon <[email-masked]>
Date: Sun, 25 Jul 2021 18:18:51 -0500

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Back in the dark ages, when I did my first chain replacement we had no
internet, and I don't know what I had for a manual.  Anyway, the logical
way to take the chain apart and put it on so as not to disturb timing.

I was a little stumped when the chain didn't have a master link, but pushed
on, prying off a link and then somehow (lost in distant memory) peened the
ends with the chain on the car engine and engine in the car.  It never came
apart in many years and thousands of miles after.

Still would recommend removing the gears and fitting together as Richard
has suggested.

Greg Lemon
TR250

On Sun, Jul 25, 2021, 5:39 PM <[email-masked]> wrote:

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<div dir=3D"auto">Back in the dark ages, when I did my first chain replacem=
ent we had no internet, and I don&#39;t know what I had for a manual.=C2=A0=
 Anyway, the logical way to take the chain apart and put it on so as not to=
 disturb timing.=C2=A0=C2=A0<div dir=3D"auto"><br></div><div dir=3D"auto">I=
 was a little stumped when the chain didn&#39;t have a master link, but pus=
hed on, prying off a link and then somehow (lost in distant memory) peened =
the ends with the chain on the car engine and engine in the car.=C2=A0 It n=
ever came apart in many years and thousands of miles after.</div><div dir=
=3D"auto"><br></div><div dir=3D"auto">Still would recommend removing the ge=
ars and fitting together as Richard has suggested.</div><div dir=3D"auto"><=
br></div><div dir=3D"auto">Greg Lemon</div><div dir=3D"auto">TR250</div></d=
iv><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On =
Sun, Jul 25, 2021, 5:39 PM  &lt;<a href=3D"mailto:[email-masked]"=
>[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gmai=
l_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left=
:1ex">Jim:=C2=A0 just unbolt the sprocket on the cam and swap out the chain=
s.=C2=A0 Very<br>
straightforward.<br>
<br>
Andrew Uprichard<br>
Jackson, Michigan<br>
<br>
-----Original Message-----<br>
From: Triumphs &lt;<a href=3D"mailto:[email-masked]" targe=
t=3D"_blank" rel=3D"noreferrer">[email-masked]</a>&gt; On =
Behalf Of Jim Henningsen<br>
Sent: Sunday, July 25, 2021 5:58 PM<br>
To: &#39;TR List&#39; &lt;<a href=3D"mailto:[email-masked]" target=
=3D"_blank" rel=3D"noreferrer">[email-masked]</a>&gt;<br>
Subject: [TR] Timing chain TR4A<br>
<br>
Ok,<br>
Since I am already down to having all the parts removed to do the timing<br=
cover oil seal and gasket, I am thinking of just doing the chain.=C2=A0 I b=
elieve<br>
it has been changed once, the gap is 8mm per the factory manual which is<br=
less than the 10mm recommended for a change.=C2=A0 Tensioner still looks sh=
iny<br>
without much wear from chain at all.=C2=A0 I have bever changed the chain.=
=C2=A0 Have<br>
the sprockets aligned at TDC marks.=C2=A0 How do I 1) remove the chain and =
2)<br>
install the new one.=C2=A0 Does a link pin get removed?=C2=A0 Any help woul=
d be<br>
greatly appreciated!<br>
Jim henningsen<br>
Ocala, FL<br>
61 3A &quot;Lord Neville&quot;<br>
67 4A &quot;Sir Charles&quot;=C2=A0 named in honor of Charles Runyan<br>
75 6=C2=A0 &quot;Ms. Molly&quot;=C2=A0 She is a bit butch<br>
81 8 &quot;Sir Stirling&quot;<br>
<br>
<br>
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From: Chris Simo <[email-masked]>
Date: Tue, 27 Jul 2021 07:41:20 -0400

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My only add is to make sure you don't flip the gears over during the swap.
Flipping the gears can change timing 1/4 to 1/2 a tooth.

That flipping is used to fine tune cam timing during set up.

Chris

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<div dir=3D"auto">My only add is to make sure you don&#39;t flip the gears =
over during the swap. Flipping the gears can change timing 1/4 to 1/2 a too=
th.<div dir=3D"auto"><br></div><div dir=3D"auto">That flipping is used to f=
ine tune cam timing during set up.=C2=A0</div><div dir=3D"auto"><br></div><=
div dir=3D"auto">Chris</div></div>

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