<div dir="ltr"><div class="gmail_default" style="font-size:small"><span style="font-family:arial,sans-serif">As far as I can figure out Harold, other than the "Dual Flow", your system is pretty well what I have constructed. <br></span></div><div class="gmail_default" style="font-size:small"><span style="font-family:arial,sans-serif">I've read up a little on the dual flow valves and it seems that that would be of little advantage and a lot bigger than a simple type.</span></div><div class="gmail_default" style="font-size:small"><span style="font-family:arial,sans-serif">Obviously it's important that the take off at the air cleaner needs to be getting "filtered" air which the 100 air filter does not.</span></div><div class="gmail_default" style="font-size:small"><span style="font-family:arial,sans-serif"><br></span></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small"><span style="font-family:arial,sans-serif">M</span><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jan 31, 2021 at 1:15 PM Harold Manifold <<a href="mailto:manifold@telus.net">manifold@telus.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff">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><font size="2" face="Arial" color="#0000ff"></font></span> </div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff">I would appreciate any feedback and
comments.</font></span></div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff"></font></span> </div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff">Harold</font></span></div>
<div dir="ltr" align="left"><span><font size="2" face="Arial" color="#0000ff"></font></span> </div>
<div dir="ltr" align="left"><span><img alt="" src="cid:17759dbec85e732c98e1" hspace="0" border="0" align="bottom"></span></div><br>
<div dir="ltr" lang="en-us" align="left">
<hr>
<font size="2" face="Tahoma"><b>From:</b> Healeys
[mailto:<a href="mailto:healeys-bounces@autox.team.net" target="_blank">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" target="_blank">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" target="_blank">bspidell@comcast.net</a>>
wrote:<br></div>
<blockquote class="gmail_quote" style="padding-left:1ex;border-left:1px solid rgb(204,204,204);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
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</blockquote></div>