<div dir="ltr">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.<br><br>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.</div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, Jul 7, 2025 at 12:41 PM Bob Spidell via Healeys <<a href="mailto:healeys@autox.team.net">healeys@autox.team.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<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="https://www.ahspares.co.uk/austin-healey/performance-parts/fuel-engine-bay/heatshield-aluminium-100m-spec.aspx" target="_blank">https://www.ahspares.co.uk/austin-healey/performance-parts/fuel-engine-bay/heatshield-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="cite">
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….</div>
<div><br>
<div>
<div dir="ltr">Best—Michael Oritt
<div><br>
</div>
</div>
<div dir="ltr"><br>
<blockquote type="cite">On Jul 6, 2025, at 7:44 PM, B coxon
<a href="mailto:morevert@gmail.com" target="_blank"><morevert@gmail.com></a> wrote:<br>
<br>
</blockquote>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">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 Lock
problem to date.I know others have made similar comments
on the Healey forums.</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Jul 4, 2025 at
12:51 PM Curtis Arndt <<a href="mailto:cnaarndt@gmail.com" target="_blank">cnaarndt@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="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="http://www.detailenthusiast.ca/blog/bn1-winter-maintenance-improvements" target="_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="https://www.youtube.com/watch?v=qotWXYorlfM" target="_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="https://www.instagram.com/p/Ch60RWrODCt/" target="_blank">(4)
Instagram</a></div>
<div><a href="https://www.instagram.com/p/Ch60OjPO6H1/" target="_blank">(4)
Instagram</a></div>
<div><a href="https://www.instagram.com/p/Ch6zNtEOEfD/" target="_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="https://www.demon-tweeks.com/us/revotec-alloy-in-line-blower-fans-991144/" target="_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. 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 light connector and a
ground..</div>
<div><br>
</div>
<div>The 4" to 2-1/2" plastic
adapter was ordered from Amazon, <b>"Powertec"
</b>for $8.99...</div>
<div><a href="https://www.amazon.com/POWERTEC-70136-4-Inch-2-Inch-Reducer/dp/B002DSDSY2/ref=sr_1_4?crid=5M60LPPWEIHH&dib=eyJ2IjoiMSJ9.lBH972M851RE6txRsBmWCnYB3z3HAvMeWL79TWm_yDe2xr2c-0HWwcPSYzyz1MtcqWQNceW86pggeDOsPRPbeRiFjUB46-vIOlCiFtF2qoJ40Zs__To9UWaYdfUNLT0kicCfGt-ZASl28Etw7-cMLbLZ6q7Y9eITrBghxhH1jowvhyxA6T-g1ZbSMS5-wBnj4X0GJvAbJAmoDqgGCEznzApES3HVxX_AYDi-3VnzidBsvD_b-ipNlwKga2l9Oq3PaTgWKnEzHkB5OUPWHuyB15Em5iIKJMcxuuHpfIdhI9E.-qDlA33CQ5f3no8To7vW_irH4EmUu2dw4W_BagUBG-o&dib_tag=se&keywords=4%22%2Bto%2B2-1%2F2%22%2Bplastic%2Bhose%2Badapter&qid=1751656574&sprefix=4%2Bto%2B2-1%2F2%2Bplastic%2Bhose%2Badapter%2Caps%2C159&sr=8-4&th=1" target="_blank">POWERTEC
70136 4" to 2-1/2" Cone Reducer,
Dust Collection Fittings for
Dust Collection Hose to Hose
Connection - Amazon.com</a> </div>
<div>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.</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="https://www.ahspares.co.uk/austin-healey/performance-parts/fuel-engine-bay/intake-hose-cold-air-box.aspx?srsltid=afmboooedzgi4c2twlkfnjavdtvcki1r5zzgyxmlrofx1ugd92jxqims" target="_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>
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