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"I always thought the resistor plugs were to introduced to suppress
interference with car radios, which I don=E2=80=99t have,"
-----------------------------------------------------
They also eliminate your ignition's noise in nearby vehicles.
Best--Michael Oritt
On Sun, Mar 19, 2023 at 8:11=E2=80=AFAM m.g.sharp--- via Healeys <
healeys@autox.team.net> wrote:
> I do exactly what Bob does with my BT7 except I use a non-resistor plug =
=E2=80=93
> Champion N12YC and 0.028=E2=80=9D gap. I too use a Lucas Sports coil. I=
always
> thought the resistor plugs were to introduced to supress interference wit=
h
> car radios, which I don=E2=80=99t have, 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.
>
>
>
> Mirek
>
>
>
> *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
>
>
>
> I've run over 150K miles on Champion plugs with nary an issue (and will
> continue to do so); RN12YC for the BJ8 and whatever the recommended is fo=
r
> 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 strand=
ed
> copper wire secondaries, so the 'R' is important, plus the plug caps have=
a
> resistor in them as well). My one-time auto shop teacher father maintaine=
d
> whatever spark was sufficient to ignite the mixture was adequate--mixture
> and compression took it from there--but a larger gap induces a 'hotter'
> spark which may be beneficial with leaner mixtures and at higher engine R=
PM
> (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 consistent spark. 12K miles on plugs is fine in =
my
> experience--as long as the engine is in good nick--and they can be cleane=
d
> and re-gapped at least once. Sandblasting is a no-no as it will pit the
> ceramic insulator and can cause issues.
>
> I came across a YouTube video by David Vizard where he claims 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 that counterfeit
> 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 w=
hile=E2=80=A6.
>
> So, I=E2=80=99m trying to get all my ducks in a row for a short run abroa=
d. 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.
>
>
>
> 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 the 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 & B=
P5ES.
> 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?
>
>
>
> Thanks, Simon
>
>
>
>
> _______________________________________________
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>
> Archive: http://www.team.net/pipermail/healeys
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>
> Healeys@autox.team.net
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>
> Unsubscribe/Manage:
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>
>
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Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"color:#3333ff"><span=
style=3D"color:rgb(34,34,34)">"I always thought the resistor plugs we=
re to introduced to suppress interference with car radios, which I don=E2=
=80=99t have,"</span><br></div><div class=3D"gmail_default" style=3D"c=
olor:#3333ff"><span style=3D"color:rgb(34,34,34)">-------------------------=
----------------------------</span></div><div class=3D"gmail_default" style=
=3D"color:#3333ff"><span style=3D"color:rgb(34,34,34)">They=C2=A0also elimi=
nate your ignition's noise in nearby vehicles.</span></div><div class=
=3D"gmail_default" style=3D"color:#3333ff"><span style=3D"color:rgb(34,34,3=
4)"><br></span></div><div class=3D"gmail_default" style=3D"color:#3333ff"><=
span style=3D"color:rgb(34,34,34)">Best--Michael Oritt</span></div><div cla=
ss=3D"gmail_default" style=3D"color:#3333ff"><span style=3D"color:rgb(34,34=
,34)"><br></span></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr=
" class=3D"gmail_attr">On Sun, Mar 19, 2023 at 8:11=E2=80=AFAM m.g.sharp---=
via Healeys <<a href=3D"mailto:healeys@autox.team.net";>healeys@autox.te=
am.net</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"m=
argin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left=
:1ex"><div class=3D"msg4506245762485897014"><div lang=3D"EN-CA" style=3D"ov=
erflow-wrap: break-word;"><div class=3D"m_4506245762485897014WordSection1">=
<p class=3D"MsoNormal">I do exactly what Bob does with my BT7 except I use =
a non-resistor plug =E2=80=93 Champion N12YC and 0.028=E2=80=9D gap.=C2=A0 =
I too use a Lucas Sports coil.=C2=A0 I always thought the resistor plugs we=
re to introduced to supress interference with car radios, which I don=E2=80=
=99t have, but I am happy to be corrected on that.=C2=A0 =C2=A0I think plug=
s are unnecessarily changed too frequently.=C2=A0 I remove them once in a w=
hile (every few years) and clean and check the gaps.=C2=A0 I run them until=
they shows signs of deterioration.=C2=A0 I have never had a plug fail me i=
n the Healey.<u></u><u></u></p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u><=
/p><p class=3D"MsoNormal">Mirek<u></u><u></u></p><p class=3D"MsoNormal"><u>=
</u>=C2=A0<u></u></p><div><div style=3D"border-right:none;border-bottom:non=
e;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0cm 0c=
m"><p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lan=
g=3D"EN-US"> Healeys <<a href=3D"mailto:healeys-bounces@autox.team.net"; =
target=3D"_blank">healeys-bounces@autox.team.net</a>> <b>On Behalf Of </=
b>Bob Spidell<br><b>Sent:</b> March 18, 2023 2:17 PM<br><b>To:</b> <a href=
=3D"mailto:healeys@autox.team.net"; target=3D"_blank">healeys@autox.team.net=
</a><br><b>Subject:</b> Re: [Healeys] Plugs<u></u><u></u></span></p></div><=
/div><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p class=3D"MsoNormal" =
style=3D"margin-bottom:12pt">I've run over 150K miles on Champion plugs=
with nary an issue (and will continue to do so); RN12YC for the BJ8 and wh=
atever the recommended is for a 100M (RN10C?). With Pertronix Ignitors in b=
oth, I run slightly over 'book' value (0.025") at 0.028" =
and both run very well (I also run stranded copper wire secondaries, so the=
'R' is important, plus the plug caps have a resistor in them as we=
ll). My one-time auto shop teacher father maintained whatever spark was suf=
ficient to ignite the mixture was adequate--mixture and compression took it=
from there--but a larger gap induces a 'hotter' spark which may be=
beneficial with leaner mixtures and at higher engine RPM (but has less mar=
gin as the electrode erodes). A larger gap requires the coil to produce mor=
e secondary voltage to jump the gap; a sports coil may be required to produ=
ce a consistent spark. 12K miles on plugs is fine in my experience--as long=
as the engine is in good nick--and they can be cleaned and re-gapped at le=
ast once. Sandblasting is a no-no as it will pit the ceramic insulator and =
can cause issues. <br><br>I came across a YouTube video by David Vizard whe=
re he claims 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 that counterfeit NGK plugs are in the market.<br><br><br><=
span><u></u><u></u></span></p><div><p class=3D"MsoNormal">On 3/18/2023 9:49=
AM, Simon Lachlan via Healeys wrote:<u></u><u></u></p></div><blockquote st=
yle=3D"margin-top:5pt;margin-bottom:5pt"><p class=3D"MsoNormal"><span style=
=3D"font-size:12pt;font-family:"Times New Roman ,serif",serif">He=
re=E2=80=99s a can of worms that we haven=E2=80=99t delved into for a while=
=E2=80=A6.</span><u></u><u></u></p><p class=3D"MsoNormal"><span style=3D"fo=
nt-size:12pt;font-family:"Times New Roman ,serif",serif">So, I=E2=
=80=99m trying to get all my ducks in a row for a short run abroad. Car is =
a MkII BT7 with a DW fast road cam, 3 HD6s, big bore 6 branch and 123Igniti=
on plus a so-called Sports Coil.</span><u></u><u></u></p><p class=3D"MsoNor=
mal"><span style=3D"font-size:12pt;font-family:"Times New Roman ,serif=
",serif">=C2=A0</span><u></u><u></u></p><ol style=3D"margin-top:0cm" s=
tart=3D"1" type=3D"1"><li class=3D"m_4506245762485897014MsoListParagraph" s=
tyle=3D"margin-left:0cm"><span style=3D"font-size:12pt;font-family:"Ti=
mes New Roman ,serif",serif">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 the way up to 0.035=E2=80=9D. So what=E2=80=99s the opinion the=
re??</span><u></u><u></u></li><li class=3D"m_4506245762485897014MsoListPara=
graph" style=3D"margin-left:0cm"><span style=3D"font-size:12pt;font-family:=
"Times New Roman ,serif",serif">And which plug? Seemed to be most=
ly between NGK=E2=80=99s BP6ES & BP5ES. Was a hold-out for their B8EGV =
5627</span><span style=3D"font-size:12pt">=C2=A0 but that</span><span style=
=3D"font-size:12pt;font-family:"Times New Roman ,serif",serif"> w=
as dismissed fairly vigorously by Jeremy Welch as being way OTT for normal =
road use.</span><u></u><u></u></li><li class=3D"m_4506245762485897014MsoLis=
tParagraph" style=3D"margin-left:0cm"><span style=3D"font-size:12pt;font-fa=
mily:"Times New Roman ,serif",serif">And, I have 12,000 miles+++ =
as plug replacement mileage so long as they still look and perform OK. Any =
thoughts?</span><u></u><u></u></li></ol><p class=3D"m_4506245762485897014Ms=
oListParagraph"><span style=3D"font-size:12pt;font-family:"Times New R=
oman ,serif",serif">=C2=A0</span><u></u><u></u></p><p class=3D"m_45062=
45762485897014MsoListParagraph"><span style=3D"font-size:12pt;font-family:&=
quot;Times New Roman ,serif",serif">Thanks, Simon</span><u></u><u></u>=
</p><p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p></blockquot=
e><p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p></div></div>_=
______________________________________________<br>
rer" target=3D"_blank">http://www.team.net/donate.html</a><br>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/healeys"; rel=3D"noreferre=
r" target=3D"_blank">http://www.team.net/pipermail/healeys</a> <a href=3D"h=
ttp://autox.team.net/archive/healeys" rel=3D"noreferrer" target=3D"_blank">=
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<br>
<a href=3D"mailto:Healeys@autox.team.net"; target=3D"_blank">Healeys@autox.t=
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s/michael.oritt@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://auto=
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<br>
</div></blockquote></div>
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