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<p>FWIW, I just had the manifolds on my BJ8 Jet-Hot coated and
haven't noticed much, if any, difference in running temps or other
effects (I also wrapped my downpipes). YMMV.</p>
<p>Bob<br>
</p>
<br>
<div class="moz-cite-prefix">On 9/4/2017 10:05 AM, Al Fuller wrote:<br>
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<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Roger:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Have
you considered coating the exhaust manifolds, so as to
conduct the heat down the exhaust system, as opposed to
allowing the manifolds to be their usual heat radiating
selves?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I’m
still thinking a winter project will be getting mine coated
[Jet-Hot, etc.].<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Al
Fuller</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">al
at bighealey dot org</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">'65
BJ-8</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">'85
Rx-7</span><span style="color:black"><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">
Healeys [<a class="moz-txt-link-freetext" href="mailto:healeys-bounces@autox.team.net">mailto:healeys-bounces@autox.team.net</a>] <b>On
Behalf Of </b>Roger Grace<br>
<b>Sent:</b> Monday, September 4, 2017 10:14 AM<br>
<b>To:</b> Healey List <a class="moz-txt-link-rfc2396E" href="mailto:healeys@autox.team.net"><healeys@autox.team.net></a><br>
<b>Subject:</b> [Healeys] BJ8 Temps<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">My BJ8 seems to perform
better with the increased O2 of lower<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">ambient temps in the
evenings and mornings. There even seem to be fewer <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">rattles squeaks and groans
too !<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">I have an oil cooler,
electric rad. fan oil temp gauge and standard rad.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">Whenever I spend more than
say 20 mins in traffic after the engine oil is<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">already up to temp, the
idling is impacted due to what must be due to <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">increased engine
compartment air temp, and the HD8 mixture becoming too
rich for that<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">ambient.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">So I decided to do some
crude testing, and installed a temp. pick up near<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">the rear carb intake.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">In an ambient of around 85F
and sustained cruising at around 60 MPH – elec.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">rad fan off<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">Water is 190F<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">Oil is 165- 170F<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">Engine compartment is
around 130F<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">At same ambient and elec.
fan now on and after 25 mins idling in traffic<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">Water is 200F<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">Oil is 180 F<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">Engine compartment is over
155F and idling has to be nursed to avoid<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">stalling. This must be a
build up of exhaust heat with no exit path.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">Have tried to compromise
with mixture settings but not yet found a sweet <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">spot.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">So l was wondering if
anyone has tried to improve engine compartment venting
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">and how ?<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">Assume this why some cars
have louvers on hood or side of car.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">Ideas comments welcome.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">On a similar thread has
anyone used the cold vent air to bring cooler air to <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">the carb intake area when
cruising ? Results ?<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Comic
Sans MS";color:black">rg <o:p></o:p></span></p>
</div>
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