--===============7545776611223242831==
--000000000000dd8cf606395cb44b
Content-Transfer-Encoding: quoted-printable
Many years ago I solved my vapor lock issues on my 100 by wrapping some
heat tape around the tail pipe that passes under the fuel pump. That works
well.
A more elegant (but more costly) solution is to jet hot coat the headers,
which does wonders to push heat out the back of the car.
On Mon, Jul 7, 2025 at 12:41=E2=80=AFPM Bob Spidell via Healeys <
healeys@autox.team.net> wrote:
> Speaking of heat shields, AHS has one for the 100M (how the M's linkage
> varies from a std. BN2's I don't know). I have one, and plan to install i=
t,
> along with Michael Salter's PCV kit as soon as I get a round tuit.
>
>
> https://www.ahspares.co.uk/austin-healey/performance-parts/fuel-engine-ba=
y/heatshield-aluminium-100m-spec.aspx
>
> bs
>
> On 7/7/2025 7:21 AM, Michael Oritt wrote:
>
> I am also fortunate in never having had issues with fuel percolation or
> vapor locking even before the recent rebuild and addition of air intake
> ducting.
>
> I have a DE tubular exhaust system to compliment the AL head and perhaps
> this combo is less apt to radiate heat up to the carbs.
>
> In any case yours is a good point and a bigger/better heat shield would b=
e
> an easy thing to fabricate.
>
> Every little bit helps=E2=80=A6.
>
> Best=E2=80=94Michael Oritt
>
>
> On Jul 6, 2025, at 7:44=E2=80=AFPM, B coxon <morevert@gmail.com>
> <morevert@gmail.com> wrote:
>
> =EF=BB=BF
> Maybe I'm a lucky 100-4 owner, but I have never had Vapor Lock issues. I
> definitely don't drive it as much as some of you or in as hot conditions.
> I'm sure some of you have thought why don't 6 cyl. Healey's typically get
> Vapor Lock? The engine compartment in a 6 cyl. Healey is typically much
> hotter than a more wide open 100-4 engine compartment. What's the main
> difference in setups. It's a much more robust Heat Shield. After Concours=
I
> switched my 100-4 to have a large Heat Shield & Headers. Never a Vapor Lo=
ck
> problem to date.I know others have made similar comments on the Healey
> forums.
>
> On Fri, Jul 4, 2025 at 12:51=E2=80=AFPM Curtis Arndt <cnaarndt@gmail.com>=
wrote:
>
>> Ken,ac
>>
>> Here's the design and setup that I did for the BN1/2 float bowl cooling
>> fan. It's been installed by both Geoff Chrysler and BN1 owner, British
>> expat Simon Griffin of Illinois. Simon told me that the results have bee=
n
>> absolutely fantastic, no more vapor lock, or fuel boiling in the float
>> bowls.
>>
>> Here the blog article from Geoff Chrysler [Rightway Heritage Trimming] o=
n
>> his installation, #10 Install a Carburetor Cooling Fan...
>> BN1: Winter Maintenance & Improvements, - A DETAIL ENTHUSIAST
>> <http://www.detailenthusiast.ca/blog/bn1-winter-maintenance-improvements=
>
>>
>> Here's the video Geoff did on his installation, *"Install a Cooling Fan"=
*
>> at minute 38:47 to 45:22...
>> BN1 Winter maintenance <https://www.youtube.com/watch?v=3DqotWXYorlfM>
>>
>> There are three photos of my original setup without the inline cooling
>> fan on my Instagram site - 1955healey100...
>> (4) Instagram <https://www.instagram.com/p/Ch60RWrODCt/>
>> (4) Instagram <https://www.instagram.com/p/Ch60OjPO6H1/>
>> (4) Instagram <https://www.instagram.com/p/Ch6zNtEOEfD/>
>>
>> I ordered my *Revotec* 4" inline cooling fan from these folks in
>> England...
>> Buy Revotec Alloy In-Line Blower Fans | Demon Tweeks
>> <https://www.demon-tweeks.com/us/revotec-alloy-in-line-blower-fans-99114=
4/>
>>
>> These fans are high quality, UK made and are specific for performance or
>> vintage automobiles. They are under $150 USD delivered to California. I
>> was going to wire the fan to my light panel under my dash with a toggle
>> switch, however Geoff came up with a simple and elegant
>> alternative... power is easily supplied as Geoff describes from the
>> available side light connector just requiring a plug in to the side ligh=
t
>> connector and a ground..
>>
>> The 4" to 2-1/2" plastic adapter was ordered from Amazon, *"Powertec" *f=
or
>> $8.99...
>> POWERTEC 70136 4" to 2-1/2" Cone Reducer, Dust Collection Fittings for
>> Dust Collection Hose to Hose Connection - Amazon.com
>> <https://www.amazon.com/POWERTEC-70136-4-Inch-2-Inch-Reducer/dp/B002DSDS=
Y2/ref=3Dsr_1_4?crid=3D5M60LPPWEIHH&dib=3DeyJ2IjoiMSJ9.lBH972M851RE6txRsBmW=
CnYB3z3HAvMeWL79TWm_yDe2xr2c-0HWwcPSYzyz1MtcqWQNceW86pggeDOsPRPbeRiFjUB46-v=
IOlCiFtF2qoJ40Zs__To9UWaYdfUNLT0kicCfGt-ZASl28Etw7-cMLbLZ6q7Y9eITrBghxhH1jo=
wvhyxA6T-g1ZbSMS5-wBnj4X0GJvAbJAmoDqgGCEznzApES3HVxX_AYDi-3VnzidBsvD_b-ipNl=
wKga2l9Oq3PaTgWKnEzHkB5OUPWHuyB15Em5iIKJMcxuuHpfIdhI9E.-qDlA33CQ5f3no8To7vW=
_irH4EmUu2dw4W_BagUBG-o&dib_tag=3Dse&keywords=3D4%22%2Bto%2B2-1%2F2%22%2Bpl=
astic%2Bhose%2Badapter&qid=3D1751656574&sprefix=3D4%2Bto%2B2-1%2F2%2Bplasti=
c%2Bhose%2Badapter%2Caps%2C159&sr=3D8-4&th=3D1>
>>
>> Basic HS physics/Bernoulli, reducing the diameter from 4" to 2-1/2"
>> increases the speed of the air, plus the adapter makes mounting a lot
>> easier. It can all be removed in minutes.
>>
>> The hose was a quality OEM style, 100M cold air box, sturdy fabric type
>> from AH Spares...
>> Intake Hose - Cold Air Box
>> <https://www.ahspares.co.uk/austin-healey/performance-parts/fuel-engine-=
bay/intake-hose-cold-air-box.aspx?srsltid=3Dafmboooedzgi4c2twlkfnjavdtvcki1=
r5zzgyxmlrofx1ugd92jxqims>
>>
>> Let me know what you think. I was going to supply, market and sell these
>> as a kit, but I'd most likely lose money on the project. They are easy
>> enough to build on your own.
>>
>> Cheers,
>>
>> Curt
>> AHCSD, AHCUSA, AHCA
>> AH Concours Registry
>>
>>
> _______________________________________________
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>
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>
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--000000000000dd8cf606395cb44b
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">Many years ago I solved my vapor lock issues on my 100 by =
wrapping some heat tape around the tail pipe=C2=A0that passes under the fue=
l pump.=C2=A0 That works well.<br><br>A more elegant (but more costly) solu=
tion is to jet hot coat the headers, which does wonders to push heat out th=
e back of the car.</div><br><div class=3D"gmail_quote gmail_quote_container=
"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Jul 7, 2025 at 12:41=E2=80=
=AFPM Bob Spidell 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:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,=
204);padding-left:1ex"><u></u>
=20
=20
=20
<div>
Speaking of heat shields, AHS has one for the 100M (how the M's
linkage varies from a std. BN2's I don't know). I have one, and=
plan
to install it, along with Michael Salter's PCV kit as soon as I get
a round tuit.<br>
<br>
<a href=3D"https://www.ahspares.co.uk/austin-healey/performance-parts/fuel-=
engine-bay/heatshield-aluminium-100m-spec.aspx" target=3D"_blank">https://w=
ww.ahspares.co.uk/austin-healey/performance-parts/fuel-engine-bay/heatshiel=
d-aluminium-100m-spec.aspx</a><br>
<br>
bs<br>
<br>
<div>On 7/7/2025 7:21 AM, Michael Oritt
wrote:<br>
</div>
<blockquote type=3D"cite">
=20
I am also fortunate in never having had issues with fuel
percolation or vapor locking even before the recent rebuild and
addition of air intake ducting.
<div><br>
</div>
<div>I have a DE tubular exhaust system to compliment the AL head
and perhaps this combo is less apt to radiate heat up to the
carbs.</div>
<div><br>
</div>
<div>In any case yours is a good point and a bigger/better heat
shield would be an easy thing to fabricate.</div>
<div><br>
</div>
<div>Every little bit helps=E2=80=A6.</div>
<div><br>
<div>
<div dir=3D"ltr">Best=E2=80=94Michael Oritt
<div><br>
</div>
</div>
<div dir=3D"ltr"><br>
<blockquote type=3D"cite">On Jul 6, 2025, at 7:44=E2=80=AFPM, B=
coxon
<a href=3D"mailto:morevert@gmail.com"; target=3D"_blank"><m=
orevert@gmail.com></a> wrote:<br>
<br>
</blockquote>
</div>
<blockquote type=3D"cite">
<div dir=3D"ltr">=EF=BB=BF
<div dir=3D"ltr">Maybe I'm a lucky 100-4 owner, but I hav=
e
never had Vapor Lock issues. I definitely don't drive i=
t
as much as some of you or in as hot conditions. I'm sur=
e
some of you have thought why don't 6 cyl. Healey's
typically get Vapor Lock? The engine compartment in a 6
cyl. Healey is typically much hotter than=C2=A0a more
wide=C2=A0open 100-4 engine compartment. What's the mai=
n
difference in setups.=C2=A0It's a much more robust Heat
Shield. After Concours I switched my 100-4 to have a
large Heat Shield & Headers. Never a Vapor Lock
problem to date.I know others have made similar comments
on the Healey forums.</div>
<br>
<div class=3D"gmail_quote">
<div dir=3D"ltr" class=3D"gmail_attr">On Fri, Jul 4, 2025 a=
t
12:51=E2=80=AFPM Curtis Arndt <<a href=3D"mailto:cnaar=
ndt@gmail.com" target=3D"_blank">cnaarndt@gmail.com</a>>
wrote:<br>
</div>
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0=
px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">Ken,ac
<div><br>
</div>
<div>Here's the design and setup
that I did for the BN1/2 float
bowl cooling fan. It's been
installed by both Geoff Chrysler
and BN1 owner, British expat Simon
Griffin of Illinois. Simon told me
that the results have been
absolutely fantastic, no more
vapor lock, or fuel boiling in the
float bowls.</div>
<div><br>
</div>
<div>Here the blog article from
Geoff Chrysler [Rightway Heritage
Trimming] on his installation, #10
Install a Carburetor Cooling
Fan...</div>
<div><a href=3D"http://www.detailenthus=
iast.ca/blog/bn1-winter-maintenance-improvements" target=3D"_blank">BN1:
Winter Maintenance &
Improvements, - A DETAIL
ENTHUSIAST</a></div>
<div><br>
</div>
<div>Here's the video Geoff did on
his installation, <b>"Install a
Cooling Fan"</b> at minute 38:=
47
to 45:22...</div>
<div><a href=3D"https://www.youtube.com=
/watch?v=3DqotWXYorlfM" target=3D"_blank">BN1
Winter maintenance</a></div>
<div><br>
</div>
<div>There are three photos of my
original setup without the inline
cooling fan on my Instagram site -
1955healey100...</div>
<div><a href=3D"https://www.instagram.c=
om/p/Ch60RWrODCt/" target=3D"_blank">(4)
Instagram</a></div>
<div><a href=3D"https://www.instagram.c=
om/p/Ch60OjPO6H1/" target=3D"_blank">(4)
Instagram</a></div>
<div><a href=3D"https://www.instagram.c=
om/p/Ch6zNtEOEfD/" target=3D"_blank">(4)
Instagram</a></div>
<div><br>
</div>
<div>I ordered my <b>Revotec</b> 4"=
;
inline cooling fan from these
folks in England...</div>
<div><a href=3D"https://www.demon-tweek=
s.com/us/revotec-alloy-in-line-blower-fans-991144/" target=3D"_blank">Buy
Revotec Alloy In-Line Blower
Fans | Demon Tweeks</a></div>
<div><br>
</div>
<div>These fans are high quality, UK
made and are specific for
performance or vintage
automobiles. They are under $150
USD delivered to California.=C2=A0 I
was=C2=A0going to wire the fan to my
light panel under my dash with a
toggle switch, however Geoff came
up with a simple and elegant
alternative...=C2=A0power is easily
supplied as Geoff describes from
the available=C2=A0side light connect=
or
just requiring a plug in to the
side light connector and a
ground..</div>
<div><br>
</div>
<div>The=C2=A04" to 2-1/2" pl=
astic
adapter was ordered from Amazon, <b>&=
quot;Powertec"
</b>for $8.99...</div>
<div><a href=3D"https://www.amazon.com/=
POWERTEC-70136-4-Inch-2-Inch-Reducer/dp/B002DSDSY2/ref=3Dsr_1_4?crid=3D5M60=
LPPWEIHH&dib=3DeyJ2IjoiMSJ9.lBH972M851RE6txRsBmWCnYB3z3HAvMeWL79TWm_yDe=
2xr2c-0HWwcPSYzyz1MtcqWQNceW86pggeDOsPRPbeRiFjUB46-vIOlCiFtF2qoJ40Zs__To9UW=
aYdfUNLT0kicCfGt-ZASl28Etw7-cMLbLZ6q7Y9eITrBghxhH1jowvhyxA6T-g1ZbSMS5-wBnj4=
X0GJvAbJAmoDqgGCEznzApES3HVxX_AYDi-3VnzidBsvD_b-ipNlwKga2l9Oq3PaTgWKnEzHkB5=
OUPWHuyB15Em5iIKJMcxuuHpfIdhI9E.-qDlA33CQ5f3no8To7vW_irH4EmUu2dw4W_BagUBG-o=
&dib_tag=3Dse&keywords=3D4%22%2Bto%2B2-1%2F2%22%2Bplastic%2Bhose%2B=
adapter&qid=3D1751656574&sprefix=3D4%2Bto%2B2-1%2F2%2Bplastic%2Bhos=
e%2Badapter%2Caps%2C159&sr=3D8-4&th=3D1" target=3D"_blank">POWERTEC
70136 4" to 2-1/2" Cone R=
educer,
Dust Collection Fittings for
Dust Collection Hose to Hose
Connection - Amazon.com</a>=C2=A0=
=C2=A0</div>
<div>Basic HS physics/Bernoulli,
reducing the diameter from 4" to
2-1/2" increases the speed of th=
e
air, plus the adapter=C2=A0makes
mounting=C2=A0a lot easier. It can al=
l
be removed in minutes.</div>
<div><br>
</div>
<div>The hose was a quality OEM
style, 100M cold air box, sturdy
fabric type from AH Spares...</div>
<div><a href=3D"https://www.ahspares.co=
.uk/austin-healey/performance-parts/fuel-engine-bay/intake-hose-cold-air-bo=
x.aspx?srsltid=3Dafmboooedzgi4c2twlkfnjavdtvcki1r5zzgyxmlrofx1ugd92jxqims" =
target=3D"_blank">Intake
Hose - Cold Air Box</a></div>
<div><br>
</div>
<div>Let me know what you think. I
was going to supply, market and
sell these as a kit, but I'd most
likely lose money on the project.
They are easy enough to build on
your own.</div>
<div><br>
</div>
<div>Cheers,</div>
<div><br>
</div>
<div>Curt</div>
<div>AHCSD, AHCUSA, AHCA</div>
<div>AH Concours Registry</div>
<div><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
<br>
<fieldset></fieldset>
<pre>_______________________________________________
nk">http://www.team.net/donate.html</a>
Archive: <a href=3D"http://www.team.net/pipermail/healeys"; target=3D"_blank=
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/a>
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eam.net</a>
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</pre>
</blockquote>
<br>
</div>
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