<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Opinions on this are all over the place but there appears to be two types of currently used PCV valves, spring by loaded (to keep the plunger on its seat without vacuum and those that do not have a spring and use gravity to seat the plunger. Orientation is important to the non spring loaded type having the vacuum connection end up. Fir Spring loaded type orientation does not matter except the vacuum connection needs to be on the end of the valve that does not have the plunger seat. Just a matter of blowing on each end to see which way the plunger moves. <div>P<br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On Apr 9, 2021, at 3:15 PM, Bob Haskell <rchaskell@earthlink.net> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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<font size="-1"><font face="Courier 10 Pitch">Listers,<br>
<br>
Attempting to install a PCV valve on our tri-carb engine per
Norm Nock's Tech Tip (page 98). Made an adapter (5/8"-18 to
3/8" barb) that replaces the plug in the front inlet manifold.
3/8" hose to the PCV valve. Two questions:<br>
<br>
1) Does the PCV valve need to be orientated in a particular
way? Norm's diagram shows it horizontal and I have seen them on
non-Healeys vertical (engine side down).<br>
<br>
2) The valve cover tee is 5/8" diameter, the engine side of the
PCV valve is 1/2". Anyone know of a short hose with different
diameters on each end?<br>
<br>
Thanks.<br>
</font></font>
<pre class="moz-signature" cols="72">Cheers,
Bob Haskell
Austin Healey 3000 BN7/BT7 registrar</pre>
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