Subject: [TR] Sparkplugs for TR3A

From: Dave MacKay <[email-masked]>
Date: Mon, 27 May 2019 16:17:09 -0400

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 Sparkplugs for TR3A

Hello:

I=E2=80=99ve been running Champion L87Yc plugs in my 1960 TR3A, gapped to
0.025=E2=80=9D. Although
they=E2=80=99ve been fine, I=E2=80=99ve always been concerned about the amo=
unt of soot on
them at the end of each driving season. Thinking the soot might be dur to
too rich a mixture, I rebuilt my carbs but didn=E2=80=99t notice any change=
 in the
amount of soot. It was suggested that I might want to try a hotter plug
since that might burn away more of the soot. According to Champion, the
next hotter plug to the L87YC would be the L92YC.

What concerns ought I be aware of in running a hotter plug?  Has anyone of
the list had experience with L92YC plugs?

I researched other plugs that list members are using and found that several
have had good success with NGK BP6HS. According to NGK those plugs have
been discontinued and the recommended replacement is the BPR6HS (same plug
but with a resisitor). I thought I might try a set before moving to a
hotter plug.

I=E2=80=99d welcome any comments.

Dave MacKay

1960 TR3A s/n 68639L

Near Toronto, Canada

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<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Hello:</font></s=
pan></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I=E2=80=99ve bee=
n running Champion L87Yc plugs in</font></span><span lang=3D"en-ca"></span>=
<span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri"> my=
 1960 TR3A</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></=
span><span lang=3D"en-ca"><font face=3D"Calibri">, gapped to 0.025=E2=80=9D=
</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span=
 lang=3D"en-ca"><font face=3D"Calibri">.</font></span><span lang=3D"en-ca">=
</span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Cali=
bri">Although they=E2=80=99ve been fine, I=E2=80=99ve always been concerned=
 ab</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><s=
pan lang=3D"en-ca"><font face=3D"Calibri">out the amount of soot on them at=
 the end of each driving season. Thinking the soot might be dur to too rich=
 a mixture, I rebuilt my carbs but didn=E2=80=99t notice any change in the =
amount of soot.</font></span><span lang=3D"en-ca"></span><span lang=3D"en-c=
a"></span><span lang=3D"en-ca"> <font face=3D"Calibri">It was suggested tha=
t I might want to try a hotter plug since that might burn away more of the =
soot.</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span>=
<span lang=3D"en-ca"><font face=3D"Calibri"></font></span><span lang=3D"en-=
ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"=
Calibri">According to Champion, the next hotter plug to the L87YC would be<=
/font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span =
lang=3D"en-ca"> <font face=3D"Calibri">the L92YC.</font></span><span lang=
=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font fa=
ce=3D"Calibri"> </font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">What concerns ou=
ght I be aware of in running a hotter plug</font></span><span lang=3D"en-ca=
"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Cal=
ibri">?=C2=A0</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"=
></span><span lang=3D"en-ca"> <font face=3D"Calibri">Has anyone of the list=
 had experience with L92YC plugs?</font></span><span lang=3D"en-ca"></span>=
<span lang=3D"en-ca"></span><span lang=3D"en-ca"></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I researched oth=
er plugs that list members are using and found that several have had good s=
uccess with NGK BP6HS. According to NGK those plugs have been discontinued<=
/font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span =
lang=3D"en-ca"> <font face=3D"Calibri">and the recommended replacement is t=
he BPR6HS</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></s=
pan><span lang=3D"en-ca"><font face=3D"Calibri"> (same plug but with a resi=
sitor).</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></spa=
n><span lang=3D"en-ca"><font face=3D"Calibri"> I thought I might try a set =
before moving to a hotter plug. </font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I=E2=80=99d w</f=
ont></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span la=
ng=3D"en-ca"><font face=3D"Calibri">elcome any comments.</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Dave MacKay</fon=
t></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">1960 TR3A s/n 68=
639L</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Near Toronto, Ca=
nada</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><=
span lang=3D"en-ca"></span></p>

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** [email-masked] **

Archive: http://www.team.net/pipermail/triumphs  http://www.team.net/archive

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From: Randall <[email-masked]> LiUIKB490qWSMRpJwDMP8fFn1qKk2OGtRNTqliIC3ryVUDuflNrf8Fa6B5MReAjxmyl4zG15w/tbTw==
Date: Mon, 27 May 2019 13:59:26 -0700

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IMO soot on the plugs always means you are running too rich, at least part =
of the time=2E Since idle mixture is fully adjustable, I would first check =
it by the book (lift the piston test), then if that still puts soot on the =
plugs, try going leaner a half flat at a time=2E

Note that it's also easy to get soot on the plugs when starting from cold,=
 which may take some time to burn off, even running under load=2E Also, you=
 should be looking at the insulator near the gap, as the metal shell may ne=
ver get hot enough to burn the soot off=2E

Problems with float level (leaky float) or a leaky float valve can also ca=
use sooty plugs=2E

My point of view, hotter plugs are only a workaround for things like exces=
s oil consumption=2E
-- Randall

On 27 May 2019 13:17:09 GMT-07:00, Dave MacKay <dave@mdmackay=2Eca> wrote:
>0=2E025=E2=80=9D=2E Although
>they=E2=80=99ve been fine, I=E2=80=99ve always been concerned about the a=
mount of soot
>on
>them at the end of each driving season=2E Thinking the soot might be dur
>to
>too rich a mixture, I rebuilt my carbs but didn=E2=80=99t notice any chan=
ge in
>the
>amount of soot=2E It was suggested that I might want to try a hotter plug
>since that might burn away more of the soot=2E According to Champion, the
>next hotter plug to the L87YC would be the L92YC=2E
>
>have had good success with NGK BP6HS=2E According to NGK those plugs have
>but with a resisitor)=2E I thought I might try a set before moving to a
>hotter plug=2E
>
>I=E2=80=99d welcome any comments=2E
>
>Dave MacKay
>
>1960 TR3A s/n 68639L
>
>Near Toronto, Canada

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<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii=
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<meta name=3D"Generator" content=3D"MS Exchange Server version 16=2E0=2E11=
601=2E20208">
<title>Sparkplugs for TR3A</title>
</head>
<body>IMO soot on the plugs always means you are running too rich, at leas=
t part of the time=2E Since idle mixture is fully adjustable, I would first=
 check it by the book (lift the piston test), then if that still puts soot =
on the plugs, try going leaner a half flat at a time=2E<br><br>Note that it=
's also easy to get soot on the plugs when starting from cold, which may ta=
ke some time to burn off, even running under load=2E Also, you should be lo=
oking at the insulator near the gap, as the metal shell may never get hot e=
nough to burn the soot off=2E<br><br>Problems with float level (leaky float=
) or a leaky float valve can also cause sooty plugs=2E<br><br>My point of v=
iew, hotter plugs are only a workaround for things like excess oil consumpt=
ion=2E<br>-- Randall<br><br><div class=3D"gmail_quote">On 27 May 2019 13:17=
:09 GMT-07:00, Dave MacKay &lt;dave@mdmackay=2Eca&gt; wrote:<blockquote cla=
ss=3D"gmail_quote" style=3D"margin: 0pt 0pt 0pt 0=2E8ex; border-left: 1px s=
olid rgb(204, 204, 204); padding-left: 1ex;">

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Hello:</font></=
span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I=E2=80=99ve be=
en running Champion L87Yc plugs in</font></span><span lang=3D"en-ca"></span=
><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri"> m=
y 1960 TR3A</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><=
/span><span lang=3D"en-ca"><font face=3D"Calibri">, gapped to 0=2E025=E2=80=
=9D</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><s=
pan lang=3D"en-ca"><font face=3D"Calibri">=2E</font></span><span lang=3D"en=
-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D=
"Calibri">Although they=E2=80=99ve been fine, I=E2=80=99ve always been conc=
erned ab</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></sp=
an><span lang=3D"en-ca"><font face=3D"Calibri">out the amount of soot on th=
em at the end of each driving season=2E Thinking the soot might be dur to t=
oo rich a mixture, I rebuilt my carbs but didn=E2=80=99t notice any change =
in the amount of soot=2E</font></span><span lang=3D"en-ca"></span><span lan=
g=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">It was sugg=
ested that I might want to try a hotter plug since that might burn away mor=
e of the soot=2E</font></span><span lang=3D"en-ca"></span><span lang=3D"en-=
ca"></span><span lang=3D"en-ca"><font face=3D"Calibri"></font></span><span =
lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <fo=
nt face=3D"Calibri">According to Champion, the next hotter plug to the L87Y=
C would be</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></=
span><span lang=3D"en-ca"> <font face=3D"Calibri">the L92YC=2E</font></span=
><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-c=
a"><font face=3D"Calibri"> </font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">What concerns o=
ught I be aware of in running a hotter plug</font></span><span lang=3D"en-c=
a"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Ca=
libri">?&nbsp;</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca=
"></span><span lang=3D"en-ca"> <font face=3D"Calibri">Has anyone of the lis=
t had experience with L92YC plugs?</font></span><span lang=3D"en-ca"></span=
><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I researched ot=
her plugs that list members are using and found that several have had good =
success with NGK BP6HS=2E According to NGK those plugs have been discontinu=
ed</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><sp=
an lang=3D"en-ca"> <font face=3D"Calibri">and the recommended replacement i=
s the BPR6HS</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca">=
</span><span lang=3D"en-ca"><font face=3D"Calibri"> (same plug but with a r=
esisitor)=2E</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca">=
</span><span lang=3D"en-ca"><font face=3D"Calibri"> I thought I might try a=
 set before moving to a hotter plug=2E </font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I=E2=80=99d w</=
font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span l=
ang=3D"en-ca"><font face=3D"Calibri">elcome any comments=2E</font></span></=
p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Dave MacKay</fo=
nt></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">1960 TR3A s/n 6=
8639L</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Near Toronto, C=
anada</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span>=
<span lang=3D"en-ca"></span></p>

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