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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div dir=3D"ltr"></div><div dir=3D"ltr">Jos=
ef</div><div dir=3D"ltr">Seriously?</div><div dir=3D"ltr">What octane leaded=
fuel are you running in your engine?</div><div dir=3D"ltr">100 octane 5 sta=
r leaded as per the owner=E2=80=99s manual?</div><div dir=3D"ltr">A lot has c=
hanged in the last 60is years mate. </div><div dir=3D"ltr">Fuel o=
ctane. Lead in fuel. </div><div dir=3D"ltr">Do you run your modern radi=
als at the same pressures as 60 year old crossply tyres?</div><div dir=3D"lt=
r">The owner=E2=80=99s manual is irrelevant with regards to spark plug gaps w=
ith modern fuels. Or modern tyres. </div><div dir=3D"ltr">Sincerely&nbs=
p;</div><div dir=3D"ltr"><br></div><div dir=3D"ltr"><br><blockquote type=3D"=
cite">On 4 May 2023, at 9:45 pm, josef-eckert--- via Healeys <healeys@aut=
ox.team.net> wrote:<br><br></blockquote></div><blockquote type=3D"cite"><=
div dir=3D"ltr">=EF=BB=BF<meta http-equiv=3D"Content-Type" content=3D"text/h=
tml; charset=3DUTF-8"><title></title><p style=3D"margin: 0px;"><span style=3D=
"font-family:arial,helvetica,sans-serif;font-size:10pt;color:#000000;text-de=
coration:none">Sorry, I am out here. This guy wants to play till the engine i=
s shot.<br></span></p>
<p style=3D"margin: 0px;"><span style=3D"font-family:arial,helvetica,sans-se=
rif;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] Spark plug gap</p>
<p style=3D"margin: 0px;">Datum: 2023-05-04T12:45:37+0200</p>
<p style=3D"margin: 0px;">Von: "simon.lachlan@alexarevel.plus.com" <simon=
.lachlan@alexarevel.plus.com></p>
<p style=3D"margin: 0px;">An: "josef-eckert@t-online.de" <josef-eckert@t-=
online.de></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,Helvetica=
,sans-serif;">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language: EN-US;">Thanks f=
or 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 pr=
otected with a modern rad, all the correct baffles, 5 blade fan plus electro=
nic fan. But, as I said, I=E2=80=99ll keep an eye on it.</span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language: EN-US;">Someone m=
entioned that he used =E2=80=9CIridium=E2=80=9D plugs from NGK. I googled th=
em=E2=80=A6.horribly expensive. Can they be worth it in our old cars?</span>=
</p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language: EN-US;">Simon</s=
pan></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language: EN-US;"> </=
span></p>
<div>
<div style=3D"border: none; border-top: solid #E1E1E1 1.0pt; padding: 3.0pt 0=
cm 0cm 0cm;">
<p class=3D"MsoNormal"><strong><span lang=3D"EN-US">From:</span></strong><sp=
an lang=3D"EN-US"> josef-eckert@t-online.de <josef-eckert@t-online.de>=
<br><strong>Sent:</strong> 04 May 2023 07:06<br><strong>To:</strong> simon.=
lachlan@alexarevel.plus.com; Healey, Forum <healeys@autox.team.net><br=
><strong>Subject:</strong> AW: [Healeys] Spark plug gap</span></p>
</div>
</div>
<p class=3D"MsoNormal"> </p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;">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 s=
imilar quality. Matter of taste, as I wrote. But NOT the car manufacturer de=
termines the plug gap, its the plug manufacturer. Definitely the car manufac=
turer takes this for his specs in the workshop manual.</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;">There is to much hype about plugs anyway. I a=
m working as a professional, Elecrtonics and Elecrtrcian engineer, at a big c=
lassic car parts supplier here in Europe and I never go away from the given p=
lug 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 anywa=
y BMC knew at the time what=C2=B4s best to do with them, even its printed 60=
or 70 years ago.</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;">Some people try to adjust the fuel mixture w=
ith a CO-tester. You can do that, but it doesn=C2=B4t give best results for r=
oad use, especially in hotter climates and high above sea level. </span></p>=
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;">When you are very good in engine engineering=
and have all the tools you can try to find some more horsepower in your eng=
ine, but you always pay that with some more heat produced, which is not at a=
ll good for our old BMC engines.</span></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;">Josef</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;"> </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] Spark plug gap</p>
<p style=3D"margin: 0px;">Datum: 2023-05-04T00:06:58+0200</p>
<p style=3D"margin: 0px;">Von: "<a href=3D"mailto:simon.lachlan@alexarevel.p=
lus.com">simon.lachlan@alexarevel.plus.com</a>" <<a href=3D"mailto:simon.=
lachlan@alexarevel.plus.com">simon.lachlan@alexarevel.plus.com</a>></p>
<p style=3D"margin: 0px;">An: "<a href=3D"mailto:josef-eckert@t-online.de";>j=
osef-eckert@t-online.de</a>" <<a href=3D"mailto:josef-eckert@t-online.de"=
>josef-eckert@t-online.de</a>></p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"> </p>
<p style=3D"margin: 0px;"> </p>
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom-=
alt: auto;"><span style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black; mso-fareast-language: EN-US;">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 style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black; mso-fareast-language: EN-US;">Actually I thought that the ga=
p was determined by the car=E2=80=99s manufacturer ie one could expect to fi=
nd the same plug in two different cars and to find that the recommended gap w=
as 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 style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black; mso-fareast-language: EN-US;">Likewise, the BMC manual sugge=
sts 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 Champion plugs aren=E2=80=99t=
the best in the world and I=E2=80=99m sure that a modern NGK can stand a li=
ttle 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 style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black; mso-fareast-language: EN-US;">Anyhow, I=E2=80=99ll keep an e=
ye on them. I=E2=80=99m a pretty tame driver so there won=E2=80=99t 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 style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black; mso-fareast-language: EN-US;">Simon</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom-=
alt: auto;"><span style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black; mso-fareast-language: EN-US;"> </span></p>
<div>
<div style=3D"border: none; border-top: solid #E1E1E1 1.0pt; padding: 3.0pt 0=
cm 0cm 0cm;">
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom-=
alt: auto;"><strong><span lang=3D"EN-US" style=3D"font-size: 9.0pt; font-fam=
ily: 'Arial',sans-serif; color: black;">From:</span></strong><span lang=3D"E=
N-US" style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif; color: bla=
ck;"> <a href=3D"mailto:josef-eckert@t-online.de";>josef-eckert@t-online.de</=
a> <<a href=3D"mailto:josef-eckert@t-online.de";>josef-eckert@t-online.de<=
/a>> <br><strong><span style=3D"font-family: 'Arial',sans-serif;">Sent:</=
span></strong> 03 May 2023 20:56<br><strong><span style=3D"font-family: 'Ari=
al',sans-serif;">To:</span></strong> <a href=3D"mailto:simon.lachlan@alexare=
vel.plus.com">simon.lachlan@alexarevel.plus.com</a>; <a href=3D"mailto:heale=
ys@autox.team.net">healeys@autox.team.net</a><br><strong><span style=3D"font=
-family: 'Arial',sans-serif;">Subject:</span></strong> AW: [Healeys] Spark p=
lug gap</span></p>
</div>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom-=
alt: auto;"><span style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;"> </span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;">Spark plugs are designed and tested to be us=
ed with the gap given by the producer of the spark plug.</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;">When you widen the gap the plug gets hotter a=
s it is designed for and the electrode can melt or wear very fast.</span></p=
>
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;">Its a very short win you gain modifying them=
.</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;">I never understand why people think they are=
better engineers and know better than the designers of the system they use.=
</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;"> </span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;">Josef </span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;"> </span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 10.0pt; font-family: 'Ar=
ial',sans-serif; color: black;"> </span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;"> </span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;"> </span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;">-----Original-Nachricht-----</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;">Betreff: [Healeys] Spark plug gap</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;">Datum: 2023-05-03T21:39:57+0200</span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;">Von: "Simon Lachlan via Healeys" <<a href=3D=
"mailto:healeys@autox.team.net";>healeys@autox.team.net</a>></span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;">An: "'Healeys'" <<a href=3D"mailto:healeys=
@autox.team.net">healeys@autox.team.net</a>></span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;"> </span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;"> </span></p>
<p style=3D"margin: 0px;"><span style=3D"font-size: 9.0pt; font-family: 'Ari=
al',sans-serif; color: black;"> </span></p>
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom-=
alt: auto;"><span style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;">I run my MkII BT7 on NGK BP6ES which were recommended by so=
me 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 style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;">The car has a =E2=80=9CSports=E2=80=9D coil and a 123Igniti=
on distributor. DW fast road cam=E2=80=A6etc</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom-=
alt: auto;"><span style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;">Now, talking of =E2=80=9Crecommended=E2=80=9D, the rolling r=
oad guys told me to set the plugs at 0.028=E2=80=9D and pooh-poohed anything=
bigger when I suggested that I=E2=80=99d heard of much greater gaps with my=
approximate setup.</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom-=
alt: auto;"><span style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;">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 style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;">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 m=
ade a very surprising difference. All round performance is much enhanced.</s=
pan></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom-=
alt: auto;"><span style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;">Despite it=E2=80=99s 3:54 diff and 28% OD, it was never slu=
ggish 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 style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;">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 style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;">Not boasting=E2=80=A6just putting that out there in case an=
yone else is thinking of going up a few thou=E2=80=A6..</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom-=
alt: auto;"><span style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;">When I asked about gaps a few years back, some of the sugge=
stions were near 0.040=E2=80=9D. Surely that a bit much?</span></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom-=
alt: auto;"><span style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;">Simon</span></p>
</div>
</div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt: auto; mso-margin-bottom-=
alt: auto;"><span style=3D"font-size: 9.0pt; font-family: 'Arial',sans-serif=
; color: black;"> </span></p>
</div>
</div>
<p class=3D"MsoNormal"> </p>
</div>
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