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Re: [Healeys] Spark plug gap

To: Ricchardd Mayor <boyracer466@gmail.com>
Subject: Re: [Healeys] Spark plug gap
From: josef-eckert--- via Healeys <healeys@autox.team.net>
Date: Thu, 4 May 2023 21:58:21 +0200 (CEST)
Cc: "Healey, Forum" <healeys@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <000001d97dec$3ebe6800$bc3b3800$@alexarevel.plus.com> <1683143739797.3398822.a14248bfe188de5976f98f018d4aa49836355f5e@spica.telekom.de> <000e01d97e0b$948451e0$bd8cf5a0$@alexarevel.plus.com> <1683180374184.3438755.d7091099a99773540ea52bfc82f6e724c4dc2437@spica.telekom.de> <000001d97e75$8e7c6250$ab7526f0$@alexarevel.plus.com> <1683200618943.30241.4931512a23c5af4193aff3855654c40b0b67018f@spica.telekom.de> <9427F91A-E53F-4967-9E1C-8D9390D009D8@gmail.com>
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Richard,
Just do what you want. Its your car, your engine, I do not mind.
=20
Josef
=20
=20
=20
-----Original-Nachricht-----
Betreff: Re: [Healeys] Spark plug gap
Datum: 2023-05-04T16:10:56+0200
Von: "Ricchardd Mayor" <boyracer466@gmail.com>
An: "josef-eckert@t-online.de" <josef-eckert@t-online.de>
=20
=20
=20
On no!  Who knew that gapping your plugs at .032 would ruin your engine.=20
Thank you Josef for saving us. =20
=20
Richard Mayor



    On May 4, 2023, at 4:43 AM, josef-eckert--- via Healeys <

    Sorry, I am out here. This guy wants to play till the engine is shot.
    =20
    =20
    =20
    -----Original-Nachricht-----
    Betreff: RE: [Healeys] Spark plug gap
    Datum: 2023-05-04T12:45:37+0200
    Von: "simon.lachlan@alexarevel.plus.com
    simon.lachlan@alexarevel.plus.com
    =20
    =20
    =20

    Thanks for that. I=E2=80=99ll certainly bear it in mind. Likewise, I=E2=
=80=99ll keep a
    close eye on my engine=E2=80=99s temperature. The latter is quite well
    protected with a modern rad, all the correct baffles, 5 blade fan plus
    electronic fan. But, as I said, I=E2=80=99ll keep an eye on it.

    Someone mentioned that he used =E2=80=9CIridium=E2=80=9D plugs from NGK=
. I googled
    them=E2=80=A6.horribly expensive. Can they be worth it in our old cars?

    Simon

    =20

    Sent: 04 May 2023 07:06
    To: simon.lachlan@alexarevel.plus.com
    Subject: AW: [Healeys] Spark plug gap

    =20
    For me, i prefer Champion plugs plugs to NGK, but that=C2=B4s a matter =
of
    taste. I think both, Champion and NGK, are of similar quality. Matter
    of taste, as I wrote. But NOT the car manufacturer determines the plug
    gap, its the plug manufacturer. Definitely the car manufacturer takes
    this for his specs in the workshop manual.
    There is to much hype about plugs anyway. I am working as a
    professional, Elecrtonics and Elecrtrcian engineer, at a big classic
    car parts supplier here in Europe and I never go away from the given
    plug gap as set by the plug manufacturer. Austin-Healey engines  are
    not high tech, they are tractor engines and can take a lot of misfit,
    but anyway BMC knew at the time what=C2=B4s best to do with them, even =
its
    printed 60 or 70 years ago.
    Some people try to adjust the fuel mixture with a CO-tester. You can do
    that, but it doesn=C2=B4t give best results for road use, especially in
    hotter climates and high above sea level.
    When you are very good in engine engineering and have all the tools you
    can try to find some more horsepower in your engine, but you always pay
    that with some more heat produced, which is not at all good for our old
    BMC engines.
    =20
    Josef
    =20
    =20
    =20
    -----Original-Nachricht-----
    Betreff: RE: [Healeys] Spark plug gap
    Datum: 2023-05-04T00:06:58+0200
    Von: "simon.lachlan@alexarevel.plus.com
    simon.lachlan@alexarevel.plus.com
    =20
    =20
    =20

    You may be right. Not sure.

    Actually I thought that the gap was determined by the car=E2=80=99s
    manufacturer ie one could expect to find the same plug in two different
    cars and to find that the recommended gap was not the same for each
    car.

    Likewise, the BMC manual suggests Champion plugs at 0.024=E2=80=9D to 0=
.026=E2=80=9D
    and that was some 60+ years ago. I=E2=80=99ve always been told that Cha=
mpion
    plugs aren=E2=80=99t the best in the world and I=E2=80=99m sure that a =
modern NGK can
    stand a little more heat than the Champions that were around 60 years
    ago.

    Anyhow, I=E2=80=99ll keep an eye on them. I=E2=80=99m a pretty tame dri=
ver so there
    won=E2=80=99t be undue stress under the bonnet.

    Simon

    =20

    Sent: 03 May 2023 20:56
    To: simon.lachlan@alexarevel.plus.com
    Subject: AW: [Healeys] Spark plug gap

    =20
    Spark plugs are designed and tested to be used with the gap given by
    the producer of the spark plug.
    When you widen the gap the plug gets hotter as it is designed for and
    the electrode can melt or wear very fast.
    Its a very short win you gain modifying them.
    I never understand why people think they are better engineers and know
    better than the designers of the system they use.
    =20
    Josef
    =20
    =20
    =20
    =20
    -----Original-Nachricht-----
    Betreff: [Healeys] Spark plug gap
    Datum: 2023-05-03T21:39:57+0200
    Von: "Simon Lachlan via Healeys" <healeys@autox.team.net
=20
    >
    =20
    =20
    =20

    I run my MkII BT7 on NGK BP6ES which were recommended by some of the
    wise ones on this list.

    The car has a =E2=80=9CSports=E2=80=9D coil and a 123Ignition distribut=
or. DW fast road
    cam=E2=80=A6etc

    Now, talking of =E2=80=9Crecommended=E2=80=9D, the rolling road guys to=
ld me to set the
    plugs at 0.028=E2=80=9D and pooh-poohed anything bigger when I suggeste=
d that
    I=E2=80=99d heard of much greater gaps with my approximate setup.

    So, I went with 0.028.

    The other day, I decided to experiment and set my spare set at 0.032=E2=
=80=9D.
    Same NGKs, no mileage on them..decent plugs. Anyhow, it made a very
    surprising difference. All round performance is much enhanced.

    Despite it=E2=80=99s 3:54 diff and 28% OD, it was never sluggish on our=
 local
    hills. But now it fairly zooms up them.

    To be frank, all a bit of a surprise.

    Not boasting=E2=80=A6just putting that out there in case anyone else is
    thinking of going up a few thou=E2=80=A6..

    When I asked about gaps a few years back, some of the suggestions were
    near 0.040=E2=80=9D. Surely that a bit much?

    Simon

    =20
    =20
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=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">Richard,<br />Just do what you want. Its your car, your=
 engine, I do not mind.<br /></span></p>
<p style=3D"margin: 0px;">&nbsp;</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">&nbsp;</span></p>
<p style=3D"margin: 0px;">&nbsp;</p>
<p style=3D"margin: 0px;">&nbsp;</p>
<p style=3D"margin: 0px;">-----Original-Nachricht-----</p>
<p style=3D"margin: 0px;">Betreff: Re: [Healeys] Spark plug gap</p>
<p style=3D"margin: 0px;">Datum: 2023-05-04T16:10:56+0200</p>
<p style=3D"margin: 0px;">Von: "Ricchardd Mayor" &lt;boyracer466@gmail.com&=
gt;</p>
<p style=3D"margin: 0px;">An: "josef-eckert@t-online.de" &lt;josef-eckert@t=
-online.de&gt;</p>
<p style=3D"margin: 0px;">&nbsp;</p>
<p style=3D"margin: 0px;">&nbsp;</p>
<p style=3D"margin: 0px;">&nbsp;</p>
<div style=3D"position: relative; color: #000000; font: 12px Arial,Helvetic=
a,sans-serif;">On no! &nbsp;Who knew that gapping your plugs at .032 would =
ruin your engine. Thank you Josef for saving us. &nbsp;
<div class=3D"">&nbsp;</div>
<div class=3D"">Richard&nbsp;Mayor
<div class=3D""><a class=3D"" href=3D"mailto:boyracer466@gmail.com";>boyrace=
r466@gmail.com</a><br class=3D"" /><br class=3D"" /></div>
<br class=3D"" />
<div>
<blockquote class=3D"">
<div class=3D"">On May 4, 2023, at 4:43 AM, josef-eckert--- via Healeys &lt=
;<a class=3D"" href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.ne=
t</a>&gt; wrote:</div>
<br class=3D"Apple-interchange-newline" />
<div class=3D"">
<div class=3D"">
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-famil=
y: arial, helvetica, sans-serif; font-size: 10pt; text-decoration: none;">S=
orry, I am out here. This guy wants to play till the engine is shot.<br cla=
ss=3D"" /></span></div>
<p class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-family:=
 arial, helvetica, sans-serif; font-size: 10pt; text-decoration: none;">&nb=
sp;</span></p>
<p class=3D"" style=3D"margin: 0px;">&nbsp;</p>
<p class=3D"" style=3D"margin: 0px;">&nbsp;</p>
<div class=3D"" style=3D"margin: 0px;">-----Original-Nachricht-----</div>
<div class=3D"" style=3D"margin: 0px;">Betreff: RE: [Healeys] Spark plug ga=
p</div>
<div class=3D"" style=3D"margin: 0px;">Datum: 2023-05-04T12:45:37+0200</div=
>
<div class=3D"" style=3D"margin: 0px;">Von: "<a class=3D"" href=3D"mailto:s=
imon.lachlan@alexarevel.plus.com">simon.lachlan@alexarevel.plus.com</a>" &l=
t;<a class=3D"" href=3D"mailto:simon.lachlan@alexarevel.plus.com";>simon.lac=
hlan@alexarevel.plus.com</a>&gt;</div>
<div class=3D"" style=3D"margin: 0px;">An: "<a class=3D"" href=3D"mailto:jo=
sef-eckert@t-online.de">josef-eckert@t-online.de</a>" &lt;<a class=3D"" hre=
f=3D"mailto:josef-eckert@t-online.de";>josef-eckert@t-online.de</a>&gt;</div=
>
<p class=3D"" style=3D"margin: 0px;">&nbsp;</p>
<p class=3D"" style=3D"margin: 0px;">&nbsp;</p>
<p class=3D"" style=3D"margin: 0px;">&nbsp;</p>
<div class=3D"" style=3D"position: relative; font-style: normal; font-varia=
nt: normal; font-weight: normal; font-size: 12px; line-height: normal; font=
-family: Arial, Helvetica, sans-serif;">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span class=3D"" style=3D"mso-fareast-language: EN-U=
S;">Thanks for that. I&rsquo;ll certainly bear it in mind. Likewise, I&rsqu=
o;ll keep a close eye on my engine&rsquo;s temperature. The latter is quite=
 well protected with a modern rad, all the correct baffles, 5 blade fan plu=
s electronic fan. But, as I said, I&rsquo;ll keep an eye on it.</span></p>
<p class=3D"MsoNormal"><span class=3D"" style=3D"mso-fareast-language: EN-U=
S;">Someone mentioned that he used &ldquo;Iridium&rdquo; plugs from NGK. I =
googled them&hellip;.horribly expensive. Can they be worth it in our old ca=
rs?</span></p>
<p class=3D"MsoNormal"><span class=3D"" style=3D"mso-fareast-language: EN-U=
S;">Simon</span></p>
<div class=3D""><span class=3D"" style=3D"mso-fareast-language: EN-US;">&nb=
sp;</span></div>
<div class=3D"">
<div class=3D"" style=3D"border: none; border-top: solid #E1E1E1 1.0pt; pad=
ding: 3.0pt 0cm 0cm 0cm;">
<p class=3D"MsoNormal"><strong class=3D""><span class=3D"" lang=3D"EN-US">F=
rom:</span></strong><span class=3D"" lang=3D"EN-US"> <a class=3D"" href=3D"=
mailto:josef-eckert@t-online.de";>josef-eckert@t-online.de</a> &lt;<a class=
=3D"" href=3D"mailto:josef-eckert@t-online.de";>josef-eckert@t-online.de</a>=
&gt; <br class=3D"" /><strong class=3D"">Sent:</strong> 04 May 2023 07:06<b=
r class=3D"" /><strong class=3D"">To:</strong> <a class=3D"" href=3D"mailto=
:simon.lachlan@alexarevel.plus.com">simon.lachlan@alexarevel.plus.com</a>; =
Healey, Forum &lt;<a class=3D"" href=3D"mailto:healeys@autox.team.net";>heal=
eys@autox.team.net</a>&gt;<br class=3D"" /><strong class=3D"">Subject:</str=
ong> AW: [Healeys] Spark plug gap</span></p>
</div>
</div>
<div class=3D"">&nbsp;</div>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 10pt; font-family: Arial, sans-serif;">For me, i prefer Champion plugs plu=
gs to NGK, but that&acute;s a matter of taste. I think both, Champion and N=
GK, are of similar quality. Matter of taste, as I wrote. But NOT the car ma=
nufacturer determines the plug gap, its the plug manufacturer. Definitely t=
he car manufacturer takes this for his specs in the workshop manual.</span>=
</div>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 10pt; font-family: Arial, sans-serif;">There is to much hype about plugs a=
nyway. I am working as a professional, Elecrtonics and Elecrtrcian engineer=
, at a big classic car parts supplier here in Europe and I never go away fr=
om the given plug gap as set by the plug manufacturer. Austin-Healey engine=
s&nbsp; are not high tech, they are tractor engines and can take a lot of m=
isfit, but anyway BMC knew at the time what&acute;s best to do with them, e=
ven its printed 60 or 70 years ago.</span></div>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 10pt; font-family: Arial, sans-serif;">Some people try to adjust the fuel =
mixture with a CO-tester. You can do that, but it doesn&acute;t give best r=
esults for road use, especially in hotter climates and high above sea level=
. </span></div>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 10pt; font-family: Arial, sans-serif;">When you are very good in engine en=
gineering and have all the tools you can try to find some more horsepower i=
n your engine, but you always pay that with some more heat produced, which =
is not at all good for our old BMC engines.</span></div>
<p class=3D"" style=3D"margin: 0px;">&nbsp;</p>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 10pt; font-family: Arial, sans-serif;">Josef</span></div>
<p class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size: 1=
0pt; font-family: Arial, sans-serif;">&nbsp;</span></p>
<p class=3D"" style=3D"margin: 0px;">&nbsp;</p>
<p class=3D"" style=3D"margin: 0px;">&nbsp;</p>
<div class=3D"" style=3D"margin: 0px;">-----Original-Nachricht-----</div>
<div class=3D"" style=3D"margin: 0px;">Betreff: RE: [Healeys] Spark plug ga=
p</div>
<div class=3D"" style=3D"margin: 0px;">Datum: 2023-05-04T00:06:58+0200</div=
>
<div class=3D"" style=3D"margin: 0px;">Von: "<a class=3D"" href=3D"mailto:s=
imon.lachlan@alexarevel.plus.com">simon.lachlan@alexarevel.plus.com</a>" &l=
t;<a class=3D"" href=3D"mailto:simon.lachlan@alexarevel.plus.com";>simon.lac=
hlan@alexarevel.plus.com</a>&gt;</div>
<div class=3D"" style=3D"margin: 0px;">An: "<a class=3D"" href=3D"mailto:jo=
sef-eckert@t-online.de">josef-eckert@t-online.de</a>" &lt;<a class=3D"" hre=
f=3D"mailto:josef-eckert@t-online.de";>josef-eckert@t-online.de</a>&gt;</div=
>
<p class=3D"" style=3D"margin: 0px;">&nbsp;</p>
<p class=3D"" style=3D"margin: 0px;">&nbsp;</p>
<p class=3D"" style=3D"margin: 0px;">&nbsp;</p>
<div class=3D"">
<div class=3D"">
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">You may be right. Not sure. </span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">Actually I thought that the gap was determined by the car&rsqu=
o;s manufacturer ie one could expect to find the same plug in two different=
 cars and to find that the recommended gap was not the same for each car.</=
span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">Likewise, the BMC manual suggests Champion plugs at 0.024&rdqu=
o; to 0.026&rdquo; and that was some 60+ years ago. I&rsquo;ve always been =
told that Champion plugs aren&rsquo;t the best in the world and I&rsquo;m s=
ure that a modern NGK can stand a little more heat than the Champions that =
were around 60 years ago.</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">Anyhow, I&rsquo;ll keep an eye on them. I&rsquo;m a pretty tam=
e driver so there won&rsquo;t be undue stress under the bonnet.</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">Simon</span></p>
<div class=3D""><span class=3D"" style=3D"font-size: 9pt; font-family: Aria=
l, sans-serif;">&nbsp;</span></div>
<div class=3D"">
<div class=3D"" style=3D"border: none; border-top: solid #E1E1E1 1.0pt; pad=
ding: 3.0pt 0cm 0cm 0cm;">
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><strong class=3D""><span class=3D"" lang=3D"EN-US" style=3D"fo=
nt-size: 9pt; font-family: Arial, sans-serif;">From:</span></strong><span c=
lass=3D"" lang=3D"EN-US" style=3D"font-size: 9pt; font-family: Arial, sans-=
serif;"> <a class=3D"" href=3D"mailto:josef-eckert@t-online.de";>josef-ecker=
t@t-online.de</a> &lt;<a class=3D"" href=3D"mailto:josef-eckert@t-online.de=
">josef-eckert@t-online.de</a>&gt; <br class=3D"" /><strong class=3D""><spa=
n class=3D"" style=3D"font-family: 'Arial',sans-serif;">Sent:</span></stron=
g> 03 May 2023 20:56<br class=3D"" /><strong class=3D""><span class=3D"" st=
yle=3D"font-family: 'Arial',sans-serif;">To:</span></strong> <a class=3D"" =
href=3D"mailto:simon.lachlan@alexarevel.plus.com";>simon.lachlan@alexarevel.=
plus.com</a>; <a class=3D"" href=3D"mailto:healeys@autox.team.net";>healeys@=
autox.team.net</a><br class=3D"" /><strong class=3D""><span class=3D"" styl=
e=3D"font-family: 'Arial',sans-serif;">Subject:</span></strong> AW: [Healey=
s] Spark plug gap</span></p>
</div>
</div>
<div class=3D""><span class=3D"" style=3D"font-size: 9pt; font-family: Aria=
l, sans-serif;">&nbsp;</span></div>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 10pt; font-family: Arial, sans-serif;">Spark plugs are designed and tested=
 to be used with the gap given by the producer of the spark plug.</span></d=
iv>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 10pt; font-family: Arial, sans-serif;">When you widen the gap the plug get=
s hotter as it is designed for and the electrode can melt or wear very fast=
.</span></div>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 10pt; font-family: Arial, sans-serif;">Its a very short win you gain modif=
ying them.</span></div>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 10pt; font-family: Arial, sans-serif;">I never understand why people think=
 they are better engineers and know better than the designers of the system=
 they use.</span></div>
<p class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size: 9=
pt; font-family: Arial, sans-serif;">&nbsp;</span></p>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 10pt; font-family: Arial, sans-serif;">Josef </span></div>
<p class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size: 9=
pt; font-family: Arial, sans-serif;">&nbsp;</span></p>
<p class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size: 1=
0pt; font-family: Arial, sans-serif;">&nbsp;</span></p>
<p class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size: 9=
pt; font-family: Arial, sans-serif;">&nbsp;</span></p>
<p class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size: 9=
pt; font-family: Arial, sans-serif;">&nbsp;</span></p>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 9pt; font-family: Arial, sans-serif;">-----Original-Nachricht-----</span><=
/div>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 9pt; font-family: Arial, sans-serif;">Betreff: [Healeys] Spark plug gap</s=
pan></div>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 9pt; font-family: Arial, sans-serif;">Datum: 2023-05-03T21:39:57+0200</spa=
n></div>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 9pt; font-family: Arial, sans-serif;">Von: "Simon Lachlan via Healeys" &lt=
;<a class=3D"" href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.ne=
t</a>&gt;</span></div>
<div class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size:=
 9pt; font-family: Arial, sans-serif;">An: "'Healeys'" &lt;<a class=3D"" hr=
ef=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a>&gt;</span><=
/div>
<p class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size: 9=
pt; font-family: Arial, sans-serif;">&nbsp;</span></p>
<p class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size: 9=
pt; font-family: Arial, sans-serif;">&nbsp;</span></p>
<p class=3D"" style=3D"margin: 0px;"><span class=3D"" style=3D"font-size: 9=
pt; font-family: Arial, sans-serif;">&nbsp;</span></p>
<div class=3D"">
<div class=3D"">
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">I run my MkII BT7 on NGK BP6ES which were recommended by some =
of the wise ones on this list.</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">The car has a &ldquo;Sports&rdquo; coil and a 123Ignition dist=
ributor. DW fast road cam&hellip;etc</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">Now, talking of &ldquo;recommended&rdquo;, the rolling road gu=
ys told me to set the plugs at 0.028&rdquo; and pooh-poohed anything bigger=
 when I suggested that I&rsquo;d heard of much greater gaps with my approxi=
mate setup.</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">So, I went with 0.028.</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">The other day, I decided to experiment and set my spare set at=
 0.032&rdquo;. Same NGKs, no mileage on them..decent plugs. Anyhow, it made=
 a very surprising difference. All round performance is much enhanced.</spa=
n></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">Despite it&rsquo;s 3:54 diff and 28% OD, it was never sluggish=
 on our local hills. But now it fairly zooms up them.</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">To be frank, all a bit of a surprise.</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">Not boasting&hellip;just putting that out there in case anyone=
 else is thinking of going up a few thou&hellip;..</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">When I asked about gaps a few years back, some of the suggesti=
ons were near 0.040&rdquo;. Surely that a bit much?</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom=
-alt: auto;"><span class=3D"" style=3D"font-size: 9pt; font-family: Arial, =
sans-serif;">Simon</span></p>
</div>
</div>
<div class=3D""><span class=3D"" style=3D"font-size: 9pt; font-family: Aria=
l, sans-serif;">&nbsp;</span></div>
</div>
</div>
<div class=3D"">&nbsp;</div>
</div>
</div>
</div>
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