<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">This has made me realise that my PCV valve setup is missing the fresh air side of the equation. Seeing the improvement that I’ve noticed with my current arrangement, the other piece of the puzzle should lead to a very clean runner.<div><br></div><div>Stephen, BJ8 <br><br><div id="AppleMailSignature" dir="ltr">Sent from my iPad</div><div dir="ltr"><br>On Jan 31, 2021, at 1:15 PM, Harold Manifold <<a href="mailto:manifold@telus.net">manifold@telus.net</a>> wrote:<br><br></div><blockquote type="cite"><div dir="ltr">
<meta content="text/html; charset=us-ascii" http-equiv="Content-Type">
<meta name="GENERATOR" content="MSHTML 11.00.10570.1001">
<div dir="ltr" align="left"><span class="718150318-31012021"><font color="#0000ff" size="2" face="Arial">In my opinion providing a dedicated air intake and
separating the streams is a step in right direction. This sketch below is what I
am planning. One possible addition would be a simple air oil separator on the
return line but I am hesitant to add too much strange looking hardware if
it can be avoided.</font></span></div>
<div dir="ltr" align="left"><span class="718150318-31012021"><font color="#0000ff" size="2" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span class="718150318-31012021"><font color="#0000ff" size="2" face="Arial">I would appreciate any feedback and
comments.</font></span></div>
<div dir="ltr" align="left"><span class="718150318-31012021"><font color="#0000ff" size="2" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span class="718150318-31012021"><font color="#0000ff" size="2" face="Arial">Harold</font></span></div>
<div dir="ltr" align="left"><span class="718150318-31012021"><font color="#0000ff" size="2" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span class="718150318-31012021"><Possible PCV System.JPG></span></div><br>
<div lang="en-us" class="OutlookMessageHeader" dir="ltr" align="left">
<hr tabindex="-1">
<font size="2" face="Tahoma"><b>From:</b> Healeys
[<a href="mailto:healeys-bounces@autox.team.net">mailto:healeys-bounces@autox.team.net</a>] <b>On Behalf Of </b>Michael
Salter<br><b>Sent:</b> Sunday, January 31, 2021 9:41 AM<br><b>To:</b> Bob
Spidell<br><b>Cc:</b> <a href="mailto:healeys@autox.team.net">healeys@autox.team.net</a><br><b>Subject:</b> Re: [Healeys]
BN1 PCV system<br></font><br></div>
<div></div>
<div>I have decided to cut some "plugs" out of a chainsaw foam air filter and
insert them into the rocker cover hose. I'm thinking that flow in that hose will
be the source of intake air into the engine.
<div><br></div>
<div>M</div></div><br>
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On Sat., Jan. 30, 2021, 8:45 p.m. Bob Spidell,
<<a href="mailto:bspidell@comcast.net">bspidell@comcast.net</a>>
wrote:<br></div>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex">The
best place for a fresh air source would be a small filter on the oil
<br>filter cap. Obviously, not an easy thing to rig up. Or, you could put a
<br>tube on the backside of one of the carbs, but you'd want a better filter
<br>than the stock grasshopper-stoppers.<br><br>On 1/30/2021 3:48 PM, Harold
Manifold wrote:<br>> I am also looking into a PCV system for my BT7 as
well. Most of the PCV<br>> systems I have seen on Healey's don't have a
filtered fresh air intake and<br>> don't have much ability to replace the
blow by and other nasty's that will<br>> accumulate in the bottom of the
block. To have air changes in the bottom of<br>> the block a filtered fresh
air source is needed and slight vacuum to draw<br>> out anything that
accumulates. Ideally the fresh air would come in at one of<br>> the block
and the bad air leave at the other end. There is a connection<br>> between
the tappet section and the bottom of the block but this is also the<br>>
oil return. (A BN1 engine may be different) A PCV can be used to control
the<br>> system but if the air circulating bypasses most of the engine then
the<br>> system is less effective. On V8 engines the clean air comes in
through one<br>> valve cover, passes through the bottom of the block and
then exists via the<br>> other valve cover drawn by vacuum from the
intake.<br>><br>> Any good ideas where to locate a filter fresh air
source?<br>><br>> This website has excellent information on PCV valves
and is where I found<br>> the attached article by Tony
Ball.<br>><br>> <a href="http://mewagner.com/" rel="noreferrer noreferrer" target="_blank">http://mewagner.com/</a><br>><br>>
Harold<br>><br>><br>><br>> -----Original Message-----<br>>
From: Healeys [mailto:<a href="mailto:healeys-bounces@autox.team.net" rel="noreferrer" target="_blank">healeys-bounces@autox.team.net</a>] On Behalf Of
Bob<br>> Spidell<br>> Sent: Saturday, January 30, 2021 2:41 PM<br>>
To: <a href="mailto:healeys@autox.team.net" rel="noreferrer" target="_blank">healeys@autox.team.net</a><br>> Subject: Re: [Healeys] BN1
PCV system<br>><br>> Looks clean, Michael. I am considering similar for
my BN2 (but I plan to fab<br>> a plate with an elbow to replace the road
draft tube). If you plug the valve<br>> cover vent, you'll have a 'system'
similar to what I have on my BJ8, which<br>> is an updated version of the
original Norman Nock design.<br>> This isn't really a PCV system, as the
crankcase and valve cover will be<br>> under continuous vacuum. I suspect
some air is drawn in from the rear<br>> 'seal,' which is not filtered but
helps to alleviate the infamous Healey<br>> bellhousing drip, and likely
doesn't affect mixture all that much. If you<br>> leave the vent open--I'd
put an air filter on it--you'll have a genuine PCV<br>> system as air will
be constantly circulated through the crankcase and top<br>> end. This is
what I plan to do, but my 100M is vented to the CAB, for which<br>> I have
a large K&N filter on the intake duct in front of the
radiator.<br>><br>> Which PCV valve did you select?<br>><br>>
Bob<br>><br>><br>><br>> On 1/30/2021 12:20 PM, Michael Salter
wrote:<br>>> After months of deliberation I have constructed this PCV
system for my<br>>> BN1.<br>>> The original road draft tube has
been plugged just below the PCV valve<br>>> takeoff.<br>>> Of
importance was that the system would be almost impossible to see<br>>>
without very close inspection.<br>>> I'm still trying to decide if I
should plug the normal valve cover<br>>> vent or leave it open to serve
as the PCV system intake.<br>>> Thoughts?<br>>><br>>>
M<br>>><br>><br><br>_______________________________________________<br>Support
<a href="http://Team.Net">Team.Net</a> <a href="http://www.team.net/donate.html" rel="noreferrer noreferrer" target="_blank">http://www.team.net/donate.html</a><br>Suggested annual
donation $12.75<br><br>Archive: <a href="http://www.team.net/pipermail/healeys" rel="noreferrer noreferrer" target="_blank">http://www.team.net/pipermail/healeys</a> <a href="http://autox.team.net/archive" rel="noreferrer noreferrer" target="_blank">http://autox.team.net/archive</a><br><br><a href="mailto:Healeys@autox.team.net" rel="noreferrer" target="_blank">Healeys@autox.team.net</a><br><a href="http://autox.team.net/mailman/listinfo/healeys" rel="noreferrer noreferrer" target="_blank">http://autox.team.net/mailman/listinfo/healeys</a><br><br>Unsubscribe/Manage:
<a href="http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com" rel="noreferrer noreferrer" target="_blank">http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com</a><br><br></blockquote></div>
</div></blockquote><blockquote type="cite"><div dir="ltr"><span>_______________________________________________</span><br><span>Support <a href="http://Team.Net">Team.Net</a> <a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a></span><br><span>Suggested annual donation $12.75</span><br><span></span><br><span>Archive: <a href="http://www.team.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a> <a href="http://autox.team.net/archive">http://autox.team.net/archive</a></span><br><span></span><br><span><a href="mailto:Healeys@autox.team.net">Healeys@autox.team.net</a></span><br><span><a href="http://autox.team.net/mailman/listinfo/healeys">http://autox.team.net/mailman/listinfo/healeys</a></span><br><span></span><br><span>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/healeys/s.hutchings@rogers.com">http://autox.team.net/mailman/options/healeys/s.hutchings@rogers.com</a></span><br><span></span><br></div></blockquote></div></body></html>