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But if the modern plug is designed for a larger gap, why not use it?
On Thu, 4 May 2023 at 5:15 AM, josef-eckert--- via Healeys <
healeys@autox.team.net> wrote:
> 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.
>
>
>
> Josef
>
>
>
>
>
>
>
>
>
> -----Original-Nachricht-----
>
> Betreff: [Healeys] Spark plug gap
>
> Datum: 2023-05-03T21:39:57+0200
>
> Von: "Simon Lachlan via Healeys" <healeys@autox.team.net>
>
> An: "'Healeys'" <healeys@autox.team.net>
>
>
>
>
>
>
>
> 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 distributor=
. DW fast road
> cam=E2=80=A6etc
>
> Now, talking of =E2=80=9Crecommended=E2=80=9D, the rolling road 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.
>
> 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 l=
ocal
> 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 t=
hinking
> 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
> =EF=BB=BF
> _______________________________________________
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>
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>
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<div dir=3D"auto">But if the modern plug is designed for a larger gap, why =
not use it?</div><div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Thu, 4 May 2023 at 5:15 AM, josef-eckert--- via Healeys =
<<a href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a>>=
; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .=
8ex;border-left:1px #ccc solid;padding-left:1ex"><div><p style=3D"margin:0p=
x"><span style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt;col=
or:#000000;text-decoration:none">Spark plugs are designed and tested to be =
used with the gap given by the producer of the spark plug.<br></span></p>
<p style=3D"margin:0px"><span style=3D"font-family:arial,helvetica,sans-ser=
if;font-size:10pt;color:#000000;text-decoration:none">When you widen the ga=
p the plug gets hotter as it is designed for and the electrode can melt or =
wear very fast.</span></p>
<p style=3D"margin:0px"><span style=3D"font-family:arial,helvetica,sans-ser=
if;font-size:10pt;color:#000000;text-decoration:none">Its a very short win =
you gain modifying them.</span></p>
<p style=3D"margin:0px"><span style=3D"font-family:arial,helvetica,sans-ser=
if;font-size:10pt;color:#000000;text-decoration:none">I never understand wh=
y people think they are better engineers and know better than the designers=
of the system they use.</span></p>
<p style=3D"margin:0px">=C2=A0</p>
<p style=3D"margin:0px"><span style=3D"font-family:arial,helvetica,sans-ser=
if;font-size:10pt;color:#000000;text-decoration:none">Josef </span></p>
<p style=3D"margin:0px">=C2=A0</p>
<p style=3D"margin:0px"><span style=3D"font-family:arial,helvetica,sans-ser=
if;font-size:10pt;color:#000000;text-decoration:none">=C2=A0</span></p>
<p style=3D"margin:0px">=C2=A0</p>
<p style=3D"margin:0px">=C2=A0</p>
<p style=3D"margin:0px">-----Original-Nachricht-----</p>
<p style=3D"margin:0px">Betreff: [Healeys] Spark plug gap</p>
<p style=3D"margin:0px">Datum: 2023-05-03T21:39:57+0200</p>
<p style=3D"margin:0px">Von: "Simon Lachlan via Healeys" <<a h=
ref=3D"mailto:healeys@autox.team.net"; target=3D"_blank">healeys@autox.team.=
net</a>></p>
<p style=3D"margin:0px">An: "'Healeys'" <<a href=3D"ma=
ilto:healeys@autox.team.net" target=3D"_blank">healeys@autox.team.net</a>&g=
t;</p></div><div>
<p style=3D"margin:0px">=C2=A0</p>
<p style=3D"margin:0px">=C2=A0</p>
<p style=3D"margin:0px">=C2=A0</p>
<div style=3D"color:#000000;font:12px Arial,Helvetica,sans-serif">
<div>
<p class=3D"MsoNormal">I run my MkII BT7 on NGK BP6ES which were recommende=
d by some of the wise ones on this list.</p>
<p class=3D"MsoNormal">The car has a =E2=80=9CSports=E2=80=9D coil and a 12=
3Ignition distributor. DW fast road cam=E2=80=A6etc</p>
<p class=3D"MsoNormal">Now, talking of =E2=80=9Crecommended=E2=80=9D, the r=
olling road 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 ga=
ps with my approximate setup.</p>
<p class=3D"MsoNormal">So, I went with 0.028.</p>
<p class=3D"MsoNormal">The other day, I decided to experiment and set my sp=
are set at 0.032=E2=80=9D. Same NGKs, no mileage on them..decent plugs. Any=
how, it made a very surprising difference. All round performance is much en=
hanced.</p>
<p class=3D"MsoNormal">Despite it=E2=80=99s 3:54 diff and 28% OD, it was ne=
ver sluggish on our local hills. But now it fairly zooms up them.</p>
<p class=3D"MsoNormal">To be frank, all a bit of a surprise.</p>
<p class=3D"MsoNormal">Not boasting=E2=80=A6just putting that out there in =
case anyone else is thinking of going up a few thou=E2=80=A6..</p>
<p class=3D"MsoNormal">When I asked about gaps a few years back, some of th=
e suggestions were near 0.040=E2=80=9D. Surely that a bit much?</p>
<p class=3D"MsoNormal">Simon</p>
</div>
</div>=EF=BB=BF</div>_______________________________________________<br>
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</blockquote></div></div>
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