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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">
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style="font-family:arial,sans-serif;font-size:small"><br>
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<div class="gmail_quote"><br>
<div style="font-family:arial,sans-serif;font-size:small"
class="gmail_default">Sorry forgot the link...</div>
<br>
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<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>
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