This is a multipart message in MIME format.
--===============5505340312171307805==
boundary="----=_NextPart_000_0003_01D744C9.4E4D6810"
Content-Language: en-nz
This is a multipart message in MIME format.
------=_NextPart_000_0003_01D744C9.4E4D6810
charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Gentlemen, to put things into perspective,
=20
Way down here in New Zealand we are presently paying NZ$2.41 per litre =
for premium 98 octane petrol guaranteed with NO ethanol content from =
selected Mobil, and some BP and Caltex stations around the country.=20
=20
At the current USD v NZD exchange rate of 73 cents, that is US$1.76 per =
litre =E2=80=93 or $6.66 per US gallon. That is exactly NZ$8.00 per =
Imperial gallon.
=20
I got 27.5 mpg from our tri-carb on a 2,278 mile trip to our National =
Rally in the South island in March. I=E2=80=99m very pleased with that.
The further south we got, the worse the gas got. It seems to be more =
prevalent in the South Island.
The car LOVES being back home in Auckland.
=20
In the Auckland region we pay an extra 10 cents plus tax to fund roading =
and transport projects. At least, that=E2=80=99s where our government =
tell us it=E2=80=99s going.
Frankly, I think a lot of that money is funding the literally hundreds =
of thousands of orange road cones clogging up our roads!
=20
Mark
Ardmore, NZ
=20
From: WILLIAM B LAWRENCE <ynotink@msn.com>=20
Sent: Saturday, 8 May 2021 6:07 a.m.
To: Bluehealey <bluehealey@gmail.com>
Cc: Bob Spidell <bspidell@comcast.net>; Michael Salter =
<michaelsalter@gmail.com>; healeys@autox.team.net
Subject: Re: [Healeys] Vapor lock gas
=20
I feel your pain... But don=E2=80=99t worry, our politicians are busy =
working on ways to close that gap. Unleaded regular is up 60 to 70 cents =
in the last three months. Funny how that works.
=20
Bill Lawrence
BN1 #554
_____ =20
Sent: Friday, May 7, 2021 5:23 PM
Subject: Re: [Healeys] Vapor lock gas=20
=20
Welcome to my world. That is around the normal price of fuel here in =
the UK.
Alan - from my iPad
On 7 May 2021, at 17:47, WILLIAM B LAWRENCE <YNOTINK@msn.com =
=EF=BB=BF=20
During my jaunt to the west coast meet in Parksville, BC in 2012 I =
indulged in a tank of Premium non-ethanol fuel. As I recall it was =
priced by the liter and calculated to about $6.50 per gallon. The car =
loved it. The card, not so much...
=20
=20
_____ =20
From: Healeys <healeys-bounces@autox.team.net =
Sent: Friday, May 7, 2021 1:41 PM
To: Michael Salter <michaelsalter@gmail.com =
Subject: Re: [Healeys] Vapor lock gas=20
=20
www.petro-canada.com <http://www.petro-canada.com>=20
On May 7, 2021, at 6:27 AM, Bob Spidell <bspidell@comcast.net =
=EF=BB=BF=20
In the =E2=80=98States, fuel is blended with ethanol (thanks to the corn =
lobby). Dunno about Canada.
On May 7, 2021, at 5:59 AM, Michael Salter <michaelsalter@gmail.com =
=EF=BB=BF=20
re: "Methanol[sic] lowers the boiling point ..."
Typo?
=20
Have I got that wrong Bob?
=20
"Following the crude oil price shocks of the 1970=E2=80=99s, methanol =
blends for use in the onroad
vehicle fleet began extensive studies in the later 1970=E2=80=99s and =
the 1980=E2=80=99s. Based on
this early research, methanol blends containing up to 15 vol% (M15) were =
successfully
operated by automakers or oil companies in a number of large vehicle =
fleet trials (
~ 1000 vehicles each) in Sweden, Germany, New Zealand and China during =
that
time. Also during that time period, methanol gasoline blends containing =
as much as 5 vol% with co-solvent alcohols were
commercially introduced in Europe and the U.S.A. Because carburetted =
fuel systems with older elastomer parts were part of
vehicle fleets on the road at that time and had limited ability to =
handled high oxygen content in the fuel, the fully commercial
methanol blends were generally limited to 3 to 5 vol% of the gasoline =
blend with some co-solvents also added to provide fuel
stability. However, with today=E2=80=99s modern pressurised fuel =
injector systems using feedback control loops and also using more
advance fuel system materials, current experience suggests that methanol =
blends as high as 15 vol% (M15) of the gasoline
blend with adequate co-solvents and corrosion inhibitors can now be =
successfully used in today=E2=80=99s more modern vehicles in
use today. Many provinces in China have been commercially using M15 =
blends as early as 2005, and China=E2=80=99s M15 use has
been expanding because of very favourable economics compared to higher =
cost petroleum fuels."
=20
M
=20
On Thu, May 6, 2021 at 11:03 AM Bob Spidell <bspidell@comcast.net =
re: "Methanol[sic] lowers the boiling point ..."
Typo?
On 5/6/2021 6:51 AM, Michael Salter wrote:
Hi Ken, yes I think everyone with a 100 has encountered fuel delivery =
issues with modern fuels. Methanol lowers the boiling point of petrol to =
a point where it becomes a problem. =20
With the 100 there are 2 distinct issues.=20
=20
Firstly, because the fuel pump and its associated lines are directly =
above the exhaust pipe, hot air heats them. The fuel in the suction side =
of the pump has, effectively, a lower boiling point than it would at =
atmospheric pressure. This fuel tends to boil if there isn't sufficient =
air circulation to keep the pump and lines cooled, as occurs while =
stopped in traffic on a hot day. True vapor lock occurs because the pump =
will not pump sufficient volume of vapour to exceed the rate of its =
production by the boiling process.
=20
Secondly the carburetor float chambers and the small fuel passage to the =
jet are very close to the exhaust manifold.=20
The manifold radiates lots of heat which heats them. Again when the car =
is moving at a reasonable pace the incoming air through the grille and =
around the radiator is sufficient to maintain the carburetor at a low =
enough temperature to prohibit boiling but, again when stopped in =
traffic this doesn't happen.
=20
I have managed to eliminate the first problem by installing a insulating =
sleeve from a modern car's AC hose over the fuel line from the tank to =
the pump.
=20
For the second I have made small heatshields from 24 gauge galvanized =
steel to shield as much as possible of the carburetors from the radiated =
heat. This has helped considerably but not completely eliminated the =
problem.=20
=20
For the most part neither of these modifications are visible and I have =
found that fuel delivery issues, although not completely eliminated, are =
manageable.=20
I am considering installing a small blower and duct sourcing air from =
behind the grille to see how much difference that makes but if course =
that will be visible.
Hope that helps, others may have found better solutions.=20
=20
M
=20
=20
On Mon., May 3, 2021, 2:58 p.m. Ken Fleming, <ahmg@aol.com =
Michael , I thought you maybe have experience this ans have a solution . =
On my Bn1 which is M spec with carbs, advance distributed, LeMans Cam =
and Pistons has always suffered from what I call vapor lock of gas. =
Especially in hot weather .=20
I am assuming the heat is from
Manifold and it placement near carbs or fuel pump/ battery near exhaust =
play a role but I could be wrong . I have asked other owners and they =
seem most of them not to have same problem. I do have a heat sheild =
added with little result.
I am at a loss as to
What to do
Next , but have you experienced this and have any suggestions. Are my =
assumptions
Correct on heat causing the issue. Could today=E2=80=99s quality if gas =
be a issue?
I recall reading this was a common issue for 100=E2=80=99s to have vapor =
issues.=20
Ken
=20
_______________________________________________
Archive: http://www.team.net/pipermail/healeys =
http://autox.team.net/archive
http://autox.team.net/mailman/listinfo/healeys
http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com
_______________________________________________
Archive: http://www.team.net/pipermail/healeys =
http://autox.team.net/archive
http://autox.team.net/mailman/listinfo/healeys
http://autox.team.net/mailman/options/healeys/bluehealey@gmail.com
------=_NextPart_000_0003_01D744C9.4E4D6810
charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
<html xmlns:v=3D"urn:schemas-microsoft-com:vml" =
xmlns:o=3D"urn:schemas-microsoft-com:office:office" =
xmlns:w=3D"urn:schemas-microsoft-com:office:word" =
xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml"; =
xmlns=3D"http://www.w3.org/TR/REC-html40";><head><meta =
http-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"><meta =
name=3DGenerator content=3D"Microsoft Word 15 (filtered medium)"><!--[if =
!mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-NZ link=3Dblue =
vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>Gentlemen, to put things into =
perspective,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>Way down here in New Zealand we are presently paying NZ$2.41 =
per litre for premium 98 octane petrol guaranteed with NO ethanol =
content from selected <b>Mobil</b>, and some <b>BP</b> and <b>Caltex</b> =
stations around the country. <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>At the current USD v NZD exchange rate of 73 cents, that is =
US$1.76 per litre =E2=80=93 or $6.66 per <b>US gallon</b>.=C2=A0 That is =
exactly NZ$8.00 per <b>Imperial gallon</b>.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>I got 27.5 mpg from our tri-carb on a 2,278 mile trip to our =
National Rally in the South island in March. I=E2=80=99m very pleased =
with that.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>The further south we got, the worse the gas got.=C2=A0 It =
seems to be more prevalent in the South Island.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>The car LOVES being back home in =
Auckland.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>In the Auckland region we pay an extra 10 cents plus tax to =
fund roading and transport projects.=C2=A0=C2=A0 At least, =
that=E2=80=99s where our government tell us it=E2=80=99s =
going.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>Frankly, I think a lot of that money is funding the literally =
hundreds of thousands of orange road cones clogging up our =
roads!<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>Mark<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Tahoma",sans-serif;color:#1F497D;mso-fareast-langua=
ge:EN-US'>Ardmore, NZ<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></spa=
n></p><div><div style=3D'border:none;border-top:solid #E1E1E1 =
1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US>From:</span></b><span lang=3DEN-US> WILLIAM B LAWRENCE =
<ynotink@msn.com> <br><b>Sent:</b> Saturday, 8 May 2021 6:07 =
a.m.<br><b>To:</b> Bluehealey <bluehealey@gmail.com><br><b>Cc:</b> =
Bob Spidell <bspidell@comcast.net>; Michael Salter =
<michaelsalter@gmail.com>; =
healeys@autox.team.net<br><b>Subject:</b> Re: [Healeys] Vapor lock =
gas<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>I feel =
your pain... But don=E2=80=99t worry, our politicians are busy working =
on ways to close that gap. Unleaded regular is up 60 to 70 cents in the =
last three months. Funny how that works.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Bill Lawrence<o:p></o:p></p></div><div><p =
class=3DMsoNormal>BN1 #554<o:p></o:p></p></div><div class=3DMsoNormal =
align=3Dcenter style=3D'text-align:center'><hr size=3D2 width=3D"98%" =
align=3Dcenter></div><div id=3DdivRplyFwdMsg><p =
class=3DMsoNormal><b><span style=3D'color:black'>From:</span></b><span =
style=3D'color:black'> Bluehealey <<a =
href=3D"mailto:bluehealey@gmail.com";>bluehealey@gmail.com</a>><br><b>S=
ent:</b> Friday, May 7, 2021 5:23 PM<br><b>To:</b> WILLIAM B LAWRENCE =
<<a =
href=3D"mailto:YNOTINK@msn.com";>YNOTINK@msn.com</a>><br><b>Cc:</b> =
Bob Spidell <<a =
href=3D"mailto:bspidell@comcast.net";>bspidell@comcast.net</a>>; =
Michael Salter <<a =
href=3D"mailto:michaelsalter@gmail.com";>michaelsalter@gmail.com</a>>; =
<a href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a> =
<<a =
href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a>><br>=
<b>Subject:</b> Re: [Healeys] Vapor lock gas</span> =
<o:p></o:p></p><div><p =
class=3DMsoNormal> <o:p></o:p></p></div></div><div><p =
class=3DMsoNormal style=3D'margin-bottom:12.0pt'>Welcome to my world. =
That is around the normal price of fuel here in the =
UK.<o:p></o:p></p><div><p class=3DMsoNormal>Alan - from my =
iPad<o:p></o:p></p></div><div><p =
class=3DMsoNormal><br><br><o:p></o:p></p><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>On 7 May 2021, at 17:47, WILLIAM B =
LAWRENCE <<a href=3D"mailto:YNOTINK@msn.com";>YNOTINK@msn.com</a>> =
wrote:<o:p></o:p></p></blockquote></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p =
class=3DMsoNormal>=EF=BB=BF <o:p></o:p></p><div><p =
class=3DMsoNormal>During my jaunt to the west coast meet in Parksville, =
BC in 2012 I indulged in a tank of Premium non-ethanol fuel. As I recall =
it was priced by the liter and calculated to about $6.50 per gallon. The =
car loved it. The card, not so much...<o:p></o:p></p><p =
class=3DMsoNormal><span =
style=3D'color:#1F497D'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'color:#1F497D'><o:p> </o:p></span></p></div><div =
class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><hr =
size=3D2 width=3D"98%" align=3Dcenter></div><div =
id=3D"x_divRplyFwdMsg"><p class=3DMsoNormal><b><span =
style=3D'color:black'>From:</span></b><span style=3D'color:black'> =
Healeys <<a =
href=3D"mailto:healeys-bounces@autox.team.net";>healeys-bounces@autox.team=
.net</a>> on behalf of Bob Spidell <<a =
href=3D"mailto:bspidell@comcast.net";>bspidell@comcast.net</a>><br><b>S=
ent:</b> Friday, May 7, 2021 1:41 PM<br><b>To:</b> Michael Salter <<a =
href=3D"mailto:michaelsalter@gmail.com";>michaelsalter@gmail.com</a>><b=
r><b>Cc:</b> <a =
href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a> <<a =
href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a>><br>=
<b>Subject:</b> Re: [Healeys] Vapor lock gas</span> =
<o:p></o:p></p><div><p =
class=3DMsoNormal> <o:p></o:p></p></div></div><div><div><p =
class=3DMsoNormal><a =
href=3D"http://www.petro-canada.com";>www.petro-canada.com</a><o:p></o:p><=
/p></div><div><p class=3DMsoNormal><br><br><o:p></o:p></p><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>On May 7, 2021, at 6:27 AM, Bob Spidell =
<<a href=3D"mailto:bspidell@comcast.net";>bspidell@comcast.net</a>> =
wrote:<o:p></o:p></p></blockquote></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p =
class=3DMsoNormal>=EF=BB=BF <o:p></o:p></p><div><p class=3DMsoNormal>In =
the =E2=80=98States, fuel is blended with ethanol (thanks to the corn =
lobby). Dunno about Canada.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><br><br><o:p></o:p></p><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>On May 7, 2021, at 5:59 AM, Michael =
Salter <<a =
href=3D"mailto:michaelsalter@gmail.com";>michaelsalter@gmail.com</a>> =
wrote:<o:p></o:p></p></blockquote></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p =
class=3DMsoNormal>=EF=BB=BF <o:p></o:p></p><div><div><p =
class=3DMsoNormal><b><i><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif'>re: =
"Methanol[sic] lowers the boiling point =
..."<br><br>Typo?</span></i></b><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif'><o:p></o:p></sp=
an></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:=
p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif'>Have I got =
that wrong Bob?<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:=
p></span></p></div><div><p class=3DMsoNormal><i><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif'>"Following=
the crude oil price shocks of the 1970=E2=80=99s, methanol blends for =
use in the onroad<br>vehicle fleet began extensive studies in the later =
1970=E2=80=99s and the 1980=E2=80=99s. Based on<br>this early research, =
methanol blends containing up to 15 vol% (M15) were =
successfully<br>operated by automakers or oil companies in a number of =
large vehicle fleet trials (<br>~ 1000 vehicles each) in Sweden, =
Germany, New Zealand and China during that<br>time. Also during that =
time period, methanol gasoline blends containing as much as 5 vol% with =
co-solvent alcohols were<br>commercially introduced in Europe and the =
U.S.A. Because carburetted fuel systems with older elastomer parts were =
part of<br>vehicle fleets on the road at that time and had limited =
ability to handled high oxygen content in the fuel, the fully =
commercial<br>methanol blends were generally limited to 3 to 5 vol% of =
the gasoline blend with some co-solvents also added to provide =
fuel<br>stability. However, with today=E2=80=99s modern pressurised fuel =
injector systems using feedback control loops and also using =
more<br>advance fuel system materials, current experience suggests that =
methanol blends as high as 15 vol% (M15) of the gasoline<br>blend with =
adequate co-solvents and corrosion inhibitors can now be successfully =
used in today=E2=80=99s more modern vehicles in<br>use today. Many =
provinces in China have been commercially using M15 blends as early as =
2005, and China=E2=80=99s M15 use has<br>been expanding because of very =
favourable economics compared to higher cost petroleum =
fuels."</span></i><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif'><o:p></o:p></sp=
an></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:=
p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif'>M<o:p></o:p></s=
pan></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On =
Thu, May 6, 2021 at 11:03 AM Bob Spidell <<a =
href=3D"mailto:bspidell@comcast.net";>bspidell@comcast.net</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>re: "Methanol[sic] lowers the =
boiling point ..."<br><br>Typo?<br><br><o:p></o:p></p><div><p =
class=3DMsoNormal>On 5/6/2021 6:51 AM, Michael Salter =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p =
class=3DMsoNormal>Hi Ken, yes I think everyone with a 100 has =
encountered fuel delivery issues with modern fuels. Methanol lowers the =
boiling point of petrol to a point where it becomes a problem. =
<o:p></o:p></p><div><p class=3DMsoNormal>With the 100 there are 2 =
distinct issues. <o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Firstly, because the fuel pump and its associated =
lines are directly above the exhaust pipe, hot air heats them. The fuel =
in the suction side of the pump has, effectively, a lower boiling point =
than it would at atmospheric pressure. This fuel tends to boil if there =
isn't sufficient air circulation to keep the pump and lines cooled, as =
occurs while stopped in traffic on a hot day. True vapor lock occurs =
because the pump will not pump sufficient volume of vapour to =
exceed the rate of its production by the boiling =
process.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Secondly the carburetor float chambers and the small =
fuel passage to the jet are very close to the exhaust =
manifold. <o:p></o:p></p></div><div><p class=3DMsoNormal>The =
manifold radiates lots of heat which heats them. Again when the car is =
moving at a reasonable pace the incoming air through the grille and =
around the radiator is sufficient to maintain the carburetor at a low =
enough temperature to prohibit boiling but, again when stopped in =
traffic this doesn't happen.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>I =
have managed to eliminate the first problem by installing a insulating =
sleeve from a modern car's AC hose over the fuel line from the tank to =
the pump.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>For the second I have made small heatshields from 24 =
gauge galvanized steel to shield as much as possible of the carburetors =
from the radiated heat. This has helped considerably but not completely =
eliminated the problem. <o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>For the most part neither of these modifications are =
visible and I have found that fuel delivery issues, although not =
completely eliminated, are manageable. <o:p></o:p></p></div><div><p =
class=3DMsoNormal>I am considering installing a small blower and duct =
sourcing air from behind the grille to see how much difference that =
makes but if course that will be visible.<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Hope that helps, others may have found better =
solutions. <o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>M<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On =
Mon., May 3, 2021, 2:58 p.m. Ken Fleming, <<a =
href=3D"mailto:ahmg@aol.com"; target=3D"_blank">ahmg@aol.com</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>Michael , I thought you maybe have =
experience this ans have a solution . On my Bn1 which is M spec with =
carbs, advance distributed, LeMans Cam and Pistons has always suffered =
from what I call vapor lock of gas. Especially in hot weather . <br>I am =
assuming the heat is from<br>Manifold and it placement near carbs or =
fuel pump/ battery near exhaust play a role but I could be wrong . I =
have asked other owners and they seem most of them not to have same =
problem. I do have a heat sheild added with little result.<br>I am at a =
loss as to<br>What to do<br>Next , but have you experienced this and =
have any suggestions. Are my assumptions<br>Correct on heat causing the =
issue. Could today=E2=80=99s quality if gas be a issue?<br>I =
recall reading this was a common issue for 100=E2=80=99s to have vapor =
issues. <br>Ken<o:p></o:p></p></blockquote></div></blockquote><p =
class=3DMsoNormal><o:p> </o:p></p></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>__________________________________________=
_____<br>Support Team.Net <a href=3D"http://www.team.net/donate.html"; =
target=3D"_blank">http://www.team.net/donate.html</a><br>Suggested =
annual donation $12.75<br><br>Archive: <a =
href=3D"http://www.team.net/pipermail/healeys"; =
target=3D"_blank">http://www.team.net/pipermail/healeys</a> <a =
href=3D"http://autox.team.net/archive"; =
target=3D"_blank">http://autox.team.net/archive</a><br><br><a =
href=3D"mailto:Healeys@autox.team.net"; =
target=3D"_blank">Healeys@autox.team.net</a><br><a =
href=3D"http://autox.team.net/mailman/listinfo/healeys"; =
target=3D"_blank">http://autox.team.net/mailman/listinfo/healeys</a><br><=
br>Unsubscribe/Manage: <a =
href=3D"http://autox.team.net/mailman/options/healeys/michaelsalter@gmail=
.com" =
target=3D"_blank">http://autox.team.net/mailman/options/healeys/michaelsa=
lter@gmail.com</a><o:p></o:p></p></blockquote></div></div></blockquote></=
div></blockquote></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>__________________________________________=
_____<br>Support Team.Net <a =
href=3D"http://www.team.net/donate.html";>http://www.team.net/donate.html<=
/a><br>Suggested annual donation $12.75<br><br>Archive: <a =
href=3D"http://www.team.net/pipermail/healeys";>http://www.team.net/piperm=
ail/healeys</a> <a =
href=3D"http://autox.team.net/archive";>http://autox.team.net/archive</a><=
br><br><a =
href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a><br><a =
href=3D"http://autox.team.net/mailman/listinfo/healeys";>http://autox.team=
.net/mailman/listinfo/healeys</a><br><br>Unsubscribe/Manage: <a =
href=3D"http://autox.team.net/mailman/options/healeys/bluehealey@gmail.co=
m">http://autox.team.net/mailman/options/healeys/bluehealey@gmail.com</a>=
<o:p></o:p></p></div></blockquote></div></div></body></html>
------=_NextPart_000_0003_01D744C9.4E4D6810--
--===============5505340312171307805==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
--===============5505340312171307805==--
|