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Michael,
From your blog post:
"occasionally on overrun very little if any negative pressure was
evident in the crankcase so, in order to improve things a little I
installed a plug in the hose which runs from the valve cover to the rear
air filter and this resulted in a significant improvement"
Probably because you're pulling air (and sump oil) into the crankcase
through the rear main 'scroll' seal (and dipstick tube and oil filler
cap hole). This is how the typical, owner-installed PCV installation on
the 6-cyl cars functions as the PCV valve meters gasses both from the
crankcase and the valve cover. But ... with fresh, filtered air coming
in from the carb air filter you essentially had a true PCV 'system,'
where the gasses--fresh air and blowby--are cycled back into the intake
manifold to be burned in the cylinders.
Video: The Importance Of Using A Catch Can System
On 10/30/2022 10:22 AM, Michael Salter wrote:
>
>
> Sorry forgot the link...
>
> Adding a PCV to a 100.
>
> https://precisionsportscar.com/austin-healey-100-pcv-system/
>
>
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Michael,<br>
<br>
From your blog post: <br>
<br>
"occasionally on overrun very little if any negative pressure was
evident in the crankcase so, in order to improve things a little I
installed a plug in the hose which runs from the valve cover to the
rear air filter and this resulted in a significant improvement"<br>
<br>
Probably because you're pulling air (and sump oil) into the
crankcase through the rear main 'scroll' seal (and dipstick tube and
oil filler cap hole). This is how the typical, owner-installed PCV
installation on the 6-cyl cars functions as the PCV valve meters
gasses both from the crankcase and the valve cover. But ... with
fresh, filtered air coming in from the carb air filter you
essentially had a true PCV 'system,' where the gasses--fresh air and
blowby--are cycled back into the intake manifold to be burned in the
cylinders. <br>
<br>
<br>
<img
src="https://www.speednik.com/files/2016/06/2016-06-15_18-14-25.jpg";
class="n3VNCb KAlRDb" alt="Video: The Importance Of Using A Catch
Can System" data-noaft="1" style="width: 583px; height: 388.667px;
margin: 0px;"><br>
<br>
<div class="moz-cite-prefix">On 10/30/2022 10:22 AM, Michael Salter
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAB3i7LLvWwGCfRaZYANodwF8zEiKAJ9qoxkBGcxweA6Q_rOLEQ@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div class="gmail_default"
style="font-family:arial,sans-serif;font-size:small"><br>
</div>
<div class="gmail_quote"><br>
<div style="font-family:arial,sans-serif;font-size:small"
class="gmail_default">Sorry forgot the link...</div>
<br>
<div dir="ltr">
<div style="font-family:arial,sans-serif;font-size:small">Adding
a PCV to a 100.</div>
<div style="font-family:arial,sans-serif;font-size:small"><br>
</div>
<div style="font-family:arial,sans-serif;font-size:small">
<div style="font-family:arial,sans-serif;font-size:small"
class="gmail_default"><a
href="https://precisionsportscar.com/austin-healey-100-pcv-system/";
moz-do-not-send="true"
class="moz-txt-link-freetext">https://precisionsportscar.com/austin-healey-100-pcv-system/</a></div>
<br>
</div>
</div>
</div>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
<pre class="moz-quote-pre"
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href="http://autox.team.net/archive/healeys";>http://autox.team.net/archive/healeys</a>
<a class="moz-txt-link-abbreviated"
href="mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a>
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</pre>
</blockquote>
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