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I second Mirek in all.
=20
Josef
=20
=20
=20
-----Original-Nachricht-----
Betreff: Re: [Healeys] Plugs
Datum: 2023-03-19T13:25:21+0100
Von: "m.g.sharp--- via Healeys" <healeys@autox.team.net>
An: "'Bob Spidell'" <bspidell@comcast.net>, "healeys@autox.team.net"=20
<healeys@autox.team.net>
=20
=20
=20
I do exactly what Bob does with my BT7 except I use a non-resistor plug =E2=
=80=93=20
Champion N12YC and 0.028=E2=80=9D gap. I too use a Lucas Sports coil. I a=
lways=20
thought the resistor plugs were to introduced to supress interference with=
=20
car radios, which I don=E2=80=99t have, but I am happy to be corrected on t=
hat. I=20
think plugs are unnecessarily changed too frequently. I remove them once=
=20
in a while (every few years) and clean and check the gaps. I run them=20
until they shows signs of deterioration. I have never had a plug fail me=
=20
in the Healey.
=20
Mirek
=20
From: Healeys <healeys-bounces@autox.team.net> On Behalf Of Bob Spidell
Sent: March 18, 2023 2:17 PM
To: healeys@autox.team.net
Subject: Re: [Healeys] Plugs
=20
I've run over 150K miles on Champion plugs with nary an issue (and will=20
continue to do so); RN12YC for the BJ8 and whatever the recommended is for=
=20
a 100M (RN10C?). With Pertronix Ignitors in both, I run slightly over=20
'book' value (0.025") at 0.028" and both run very well (I also run stranded=
=20
copper wire secondaries, so the 'R' is important, plus the plug caps have a=
=20
resistor in them as well). My one-time auto shop teacher father maintained=
=20
whatever spark was sufficient to ignite the mixture was adequate--mixture=
=20
and compression took it from there--but a larger gap induces a 'hotter'=20
spark which may be beneficial with leaner mixtures and at higher engine RPM=
=20
(but has less margin as the electrode erodes). A larger gap requires the=20
coil to produce more secondary voltage to jump the gap; a sports coil may=
=20
be required to produce a consistent spark. 12K miles on plugs is fine in my=
=20
experience--as long as the engine is in good nick--and they can be cleaned=
=20
and re-gapped at least once. Sandblasting is a no-no as it will pit the=20
ceramic insulator and can cause issues.
I came across a YouTube video by David Vizard where he claims E3 Diamond=20
'Split Fire' plugs produced slightly better mileage; yep, E3 makes a plug=
=20
for Big Healeys (6-cyl only, I think). I've heard rumors that counterfeit=
=20
NGK plugs are in the market.
On 3/18/2023 9:49 AM, Simon Lachlan via Healeys wrote:
Here=E2=80=99s a can of worms that we haven=E2=80=99t delved into for a=
while=E2=80=A6.
So, I=E2=80=99m trying to get all my ducks in a row for a short run abr=
oad. Car
is a MkII BT7 with a DW fast road cam, 3 HD6s, big bore 6 branch and
123Ignition plus a so-called Sports Coil.
=20
1. I was looking through my library of files on Healey topics and
saw that we were all over the place on plug gaps=E2=80=A6..all th=
e way up
to 0.035=E2=80=9D. So what=E2=80=99s the opinion there??
2. And which plug? Seemed to be mostly between NGK=E2=80=99s BP6ES &=
BP5ES.
Was a hold-out for their B8EGV 5627 but that was dismissed
fairly vigorously by Jeremy Welch as being way OTT for normal
road use.
3. And, I have 12,000 miles+++ as plug replacement mileage so long
as they still look and perform OK. Any thoughts?
=20
Thanks, Simon
=20
=20
=EF=BB=BF
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; charset=
=3DUTF-8"/><title></title></head><body><p style=3D"margin: 0px;"><span styl=
e=3D"font-family:arial,helvetica,sans-serif;font-size:10pt;color:#000000;te=
xt-decoration:none">I second Mirek in all.<br /></span></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"><span style=3D"font-family:arial,helvetica,sans-s=
erif;font-size:10pt;color:#000000;text-decoration:none">Josef</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-family:arial,helvetica,sans-s=
erif;font-size:10pt;color:#000000;text-decoration:none"> </span></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;">-----Original-Nachricht-----</p>
<p style=3D"margin: 0px;">Betreff: Re: [Healeys] Plugs</p>
<p style=3D"margin: 0px;">Datum: 2023-03-19T13:25:21+0100</p>
<p style=3D"margin: 0px;">Von: "m.g.sharp--- via Healeys" <healeys@autox=
.team.net></p>
<p style=3D"margin: 0px;">An: "'Bob Spidell'" <bspidell@comcast.net>,=
"healeys@autox.team.net" <healeys@autox.team.net></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"> </p>
<div style=3D"position: relative; color: #000000; font: 12px Arial,Helvetic=
a,sans-serif;">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">I do exactly what Bob does with my BT7 except I use =
a non-resistor plug – Champion N12YC and 0.028” gap. I to=
o use a Lucas Sports coil. I always thought the resistor plugs were t=
o introduced to supress interference with car radios, which I don’t h=
ave, but I am happy to be corrected on that. I think plugs are =
unnecessarily changed too frequently. I remove them once in a while (=
every few years) and clean and check the gaps. I run them until they =
shows signs of deterioration. I have never had a plug fail me in the =
Healey.</p>
<p class=3D"MsoNormal"> </p>
<p class=3D"MsoNormal">Mirek</p>
<p class=3D"MsoNormal"> </p>
<div>
<div style=3D"border: none; border-top: solid #E1E1E1 1.0pt; padding: 3.0pt=
0cm 0cm 0cm;">
<p class=3D"MsoNormal"><strong><span lang=3D"EN-US" style=3D"mso-fareast-la=
nguage: EN-CA;">From:</span></strong><span lang=3D"EN-US" style=3D"mso-fare=
ast-language: EN-CA;"> Healeys <healeys-bounces@autox.team.net> <stro=
ng>On Behalf Of </strong>Bob Spidell<br /><strong>Sent:</strong> March 18, =
2023 2:17 PM<br /><strong>To:</strong> healeys@autox.team.net<br /><strong>=
Subject:</strong> Re: [Healeys] Plugs</span></p>
</div>
</div>
<p class=3D"MsoNormal"> </p>
<p class=3D"MsoNormal" style=3D"margin-bottom: 12.0pt;">I've run over 150K =
miles on Champion plugs with nary an issue (and will continue to do so); RN=
12YC for the BJ8 and whatever the recommended is for a 100M (RN10C?). With =
Pertronix Ignitors in both, I run slightly over 'book' value (0.025") at 0.=
028" and both run very well (I also run stranded copper wire secondaries, s=
o the 'R' is important, plus the plug caps have a resistor in them as well)=
. My one-time auto shop teacher father maintained whatever spark was suffic=
ient to ignite the mixture was adequate--mixture and compression took it fr=
om there--but a larger gap induces a 'hotter' spark which may be beneficial=
with leaner mixtures and at higher engine RPM (but has less margin as the =
electrode erodes). A larger gap requires the coil to produce more secondary=
voltage to jump the gap; a sports coil may be required to produce a consis=
tent spark. 12K miles on plugs is fine in my experience--as long as the eng=
ine is in good nick--and they can be cleaned and re-gapped at least once. S=
andblasting is a no-no as it will pit the ceramic insulator and can cause i=
ssues. <br /><br />I came across a YouTube video by David Vizard where he c=
laims E3 Diamond 'Split Fire' plugs produced slightly better mileage; yep, =
E3 makes a plug for Big Healeys (6-cyl only, I think). I've heard rumors th=
at counterfeit NGK plugs are in the market.<br /><br /><br /></p>
<div>
<p class=3D"MsoNormal">On 3/18/2023 9:49 AM, Simon Lachlan via Healeys wrot=
e:</p>
</div>
<blockquote style=3D"margin-top: 5.0pt; margin-bottom: 5.0pt;">
<p class=3D"MsoNormal"><span style=3D"font-size: 12.0pt; font-family: 'Time=
s New Roman ,serif',serif;">Here’s a can of worms that we haven&rsquo=
;t delved into for a while….</span></p>
<p class=3D"MsoNormal"><span style=3D"font-size: 12.0pt; font-family: 'Time=
s New Roman ,serif',serif;">So, I’m trying to get all my ducks in a r=
ow for a short run abroad. Car is a MkII BT7 with a DW fast road cam, 3 HD6=
s, big bore 6 branch and 123Ignition plus a so-called Sports Coil.</span></=
p>
<p class=3D"MsoNormal"><span style=3D"font-size: 12.0pt; font-family: 'Time=
s New Roman ,serif',serif;"> </span></p>
<ol style=3D"margin-top: 0cm;" start=3D"1" type=3D"1">
<li class=3D"MsoListParagraph" style=3D"margin-left: 0cm; mso-list: l0 leve=
l1 lfo3;"><span style=3D"font-size: 12.0pt; font-family: 'Times New Roman ,=
serif',serif;">I was looking through my library of files on Healey topics a=
nd saw that we were all over the place on plug gaps…..all the way up=
to 0.035”. So what’s the opinion there??</span></li>
<li class=3D"MsoListParagraph" style=3D"margin-left: 0cm; mso-list: l0 leve=
l1 lfo3;"><span style=3D"font-size: 12.0pt; font-family: 'Times New Roman ,=
serif',serif;">And which plug? Seemed to be mostly between NGK’s BP6E=
S & BP5ES. Was a hold-out for their B8EGV 5627</span><span style=3D"fon=
t-size: 12.0pt;"> but that</span><span style=3D"font-size: 12.0pt; fo=
nt-family: 'Times New Roman ,serif',serif;"> was dismissed fairly vigorousl=
y by Jeremy Welch as being way OTT for normal road use.</span></li>
<li class=3D"MsoListParagraph" style=3D"margin-left: 0cm; mso-list: l0 leve=
l1 lfo3;"><span style=3D"font-size: 12.0pt; font-family: 'Times New Roman ,=
serif',serif;">And, I have 12,000 miles+++ as plug replacement mileage so l=
ong as they still look and perform OK. Any thoughts?</span></li>
</ol>
<p class=3D"MsoListParagraph"><span style=3D"font-size: 12.0pt; font-family=
: 'Times New Roman ,serif',serif;"> </span></p>
<p class=3D"MsoListParagraph"><span style=3D"font-size: 12.0pt; font-family=
: 'Times New Roman ,serif',serif;">Thanks, Simon</span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language: EN-CA;"> <=
/span></p>
</blockquote>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language: EN-CA;"> <=
/span></p>
</div>
</div>=EF=BB=BF</body></html>
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