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<p>Steven, this is starting to make us both crazy. You have proved,
nearly conclusively that the rings and valves are sealing. To be
sure of those findings do this. On the offending cylinder rotate
the valves in the guides to ascertain one of the heads isn't bent
and only seals in one particular position. Second bring the piston
to near TDC and push on it to see if it moves laterally more than
intact rings would permit. Compare with the other pistons. This
might indicate a broken or weak ring that doesn't show up under
cranking. Lastly, yes a well worn cam lobe would indicate
insufficient time for cylinder filling. You might also look in the
radiator for air bubbles when cranking---another issue for gasket
failure. Healey 4cyl heads are notorious for leaking around the
cyl bores esp with a solid copper gasket. There is a gasket outfit
in Lubbock TX that can make individual rings, say 0.002-0.0025" to
place over the gasket to provide extra squish around the bores. PS
always check compression with the throttle wide open. DP<br>
</p>
<div class="moz-cite-prefix">On 3/13/2020 5:42 PM, Michael Salter
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAB3i7LJkZpQQOAssQo_-wZcu6MG5fZja7WVQSqo6wqNEYibSJA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="auto">Bronze guides...
<div dir="auto"><a
href="https://www.netbug.net/blogmichael/2007/05/15/bronze-giudes-in-cast-iron-cylinder-heads/"
moz-do-not-send="true">https://www.netbug.net/blogmichael/2007/05/15/bronze-giudes-in-cast-iron-cylinder-heads/</a><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sat, Mar 14, 2020, 12:17 PM
Steven Kingsbury via Healeys, <<a
href="mailto:healeys@autox.team.net" moz-do-not-send="true">healeys@autox.team.net</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div>This is the first I have ever heard about the bronze
valve guides being crushed. I had always heard they were
the better ones and they are by far the more expensive.
Not that money and/or expensive makes something better. I
have heard though, that they are better, so this is a
surprise. </div>
<div> And yes, I will be checking everything over with a
fine tooth comb all this weekend. With the amount of
carbon I found on the valves I am for sure going to be
checking the piston rings even though the cylinder walls
are quite pristine. The reason? Finding less than stellar
workmanship in the previous work done of this engine, I
just don't trust that the rings were done correctly to
begin with and since I'm here, I'm going to check. Peace
of mind will be well worth it.</div>
<div>Steven</div>
<div><br>
On March 13, 2020 at 11:47 AM, WILLIAM B LAWRENCE <<a
href="mailto:ynotink@msn.com" target="_blank"
rel="noreferrer" moz-do-not-send="true">ynotink@msn.com</a>>
wrote:<br>
<br>
</div>
<div>
<blockquote type="cite">
<div>Another consideration is whether you have bronze
valve guides in an iron head. These can cause problems
due to the different thermal expansion rates of the
materials. The iron can crush the bronze and cause the
valve to stick.<br>
<br>
Bill Lawrence<br>
BN1 #554<br>
<hr style="display:inline-block;width:98%">
<div id="m_982458915621157960divRplyFwdMsg" dir="ltr"><span
face="Calibri, sans-serif"
style="font-size:11pt;color:#000000;font-family:Calibri,sans-serif"
color="#000000"><b>From:</b> Healeys <<a
href="mailto:healeys-bounces@autox.team.net"
target="_blank" rel="noreferrer"
moz-do-not-send="true">healeys-bounces@autox.team.net</a>>
on behalf of Kees Oudesluijs <<a
href="mailto:coudesluijs@chello.nl"
target="_blank" rel="noreferrer"
moz-do-not-send="true">coudesluijs@chello.nl</a>><br>
<b>Sent:</b> Friday, March 13, 2020 8:19:28 AM<br>
<b>To:</b> <a
href="mailto:healeys@autox.team.net"
target="_blank" rel="noreferrer"
moz-do-not-send="true">healeys@autox.team.net</a>
<<a href="mailto:healeys@autox.team.net"
target="_blank" rel="noreferrer"
moz-do-not-send="true">healeys@autox.team.net</a>><br>
<b>Subject:</b> Re: [Healeys] Four cylinder woes,
part two!</span>
<div> </div>
</div>
<div>
<p>Measure the bores in several places first. If no
significant wear is apparent leave the pistons and
rings well alone. Also look for ridges near the
top of the bores. If they are not present, wear is
not very likely. If the bores are fine, piston
ring wear is not likely. Valves do rock a bit in
the guides. They need to, they expand in the
guides when the engine is running. You may or may
not use cap seals on the valve guides. <br>
</p>
<p>If there is wear in the cylinders however have
the block rebored and fit new pistons and rings<br>
</p>
<p>Burning some oil is nothing to worry about on the
old engines. When new 1ltr per 1000km (about 1 qrt
per 500mls) was quite permissible (after running
in during which oil consumption could be much
higher). Check the crank case ventilation system,
when dirty/blocked it can be a cause of
considerable oil consumption. Anyway you probably
loose most oil leaking. Overfilling the sump is
another cause of oil consumption as excessive oil
will be expelled through the crank case
ventilation system<br>
</p>
<p>The head should be dead straight but the surface
does not need to be super smooth. In most causes
you can see feel the milling marks.</p>
<p>Replacing the bearing shells and seals is good
practice if the bottom end comes apart. Does not
cost an arm and a leg and if in time you will save
on grinding the crankshaft. Measure the crank pins
in various places and check if these are within
limits.<br>
</p>
<p>Kees Oudesluijs</p>
<p><br>
</p>
<div>Op 13-3-2020 om 00:29 schreef Steven Kingsbury
via Healeys:<br>
</div>
<blockquote type="cite">
<div>Latest update, took the head to a friend's
machine shop and took the valves out. All the
intake vales had build up of soft carbon, a sign
of burning oil I was told and I'm going to have
to also pull the pistons to redo the rings. Fun,
but I'm here, so why not? I'm also going to get
new valve guides pressed in and replace the ones
in the head as the valves seem to rock a bit
going up and down. The head though is not warped
and is straight, but I will get it checked out
for cracks and resurface the head to make it
super smooth.</div>
<div> I'm also going to drop the pan, and push
the pistons out of the block and replace the
rings. And yes, I will plastiguage the crank to
make sure it's in good shape and install new rod
bearings when in there. </div>
<div> I am also going to remove the tappet cover
and take a good, hard, close up look at all the
lifters to make sure that's not a problem. Right
now, in for a penny, in for a pound. Sterling
that is.</div>
<div> Basically, I'm making sure everything is
correct this time and then I will have no one
but me to blame if it doesn't work. But all in
all, it seems pretty simple. So stay tuned for
further updates as they happen.</div>
<div> Thanks for all the input, suggestions and
guesses. This is actually quite the fun project.</div>
<div>Steven Kingsbury</div>
<div> </div>
<div><br>
On March 12, 2020 at 12:38 PM, John Harper <a
href="mailto:ah100register@gmail.com"
target="_blank" rel="noreferrer"
moz-do-not-send="true">
<ah100register@gmail.com></a> wrote:<br>
<br>
</div>
<div>
<blockquote type="cite">
<div>
<div dir="ltr">Hank
<div><br>
</div>
<div>The fact that number 2 exhaust
valve is not the same colour as the
others might be a clue. Maybe it is not
closing fully? It would be worth
checking for a stuck valve guide, broken
spring or just lost clearance. A
partially seized rocker is possible but
not likely. This may not be the problem
but it would not take much effort to
pull the valve out and check for any
burning on the working face.</div>
<div><br>
</div>
<div>Best regards</div>
</div>
<br>
<div>
<div dir="ltr">On Thu, 12 Mar 2020 at
18:18, <<a
href="mailto:gradea1@charter.net"
target="_blank" rel="noreferrer"
moz-do-not-send="true">gradea1@charter.net</a>>
wrote:<br>
</div>
<blockquote style="margin:0px 0px 0px
0.8ex;border-left:1px solid
#cccccc;padding-left:1ex">
<div>Hi Steven-good to hear from you!
<p>That's a nice test, but I would
magnaflux the head for cracks
between 2-3 and have it shaved
flat..could be a head gasket leak
due to warped head...especially if
valves and rings checked good.</p>
<p>Also, I don't recommend NGK plugs-
use Champion N-5...maybe cause of
carbon on valves. Unless cam is
flat, valve spring broken or tappet
rods bent/broken, problem is in
head-block fit.</p>
<p>Regards, Hank Leach<br>
<br>
</p>
<div><br>
</div>
<p>-----------------------------------------</p>
From: "Steven Kingsbury via Healeys" <br>
To: <a
href="mailto:healeys@autox.teamnet"
target="_blank" rel="noreferrer"
moz-do-not-send="true">healeys@autox.teamnet</a><br>
Cc: <br>
Sent: Thursday March 12 2020 9:40:25AM<br>
Subject: [Healeys] Four cylinder woes,
part two!<br>
<br>
<div>
<div
style="color:#000000;font-family:SFNSText,'Helvetica
Neue',Helvetica,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial">Okay,
here's the latest! I finally got
to pull my head If you remember, I
had 155 lbs of pressure in
cylinders 1, 3, and 4 and only 25
lbs in cylinder number two. So
with the head off, I was prepared
to find a problem with I flipped
it over to expose the valves, no
such luck. Other than number two
exhaust valve being a bit black,
no cracks, nothing stuck and it
looked fine. So then I went to
look into the cylinders
themselves, walls smooth, flat
high compression pistons smooth,
number three a bit rough on the
top, but other than that and good.</div>
<div
style="color:#000000;font-family:SFNSText,'Helvetica
Neue',Helvetica,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"> So
then I went back to the head, put
the spark plugs back in and filled
the combustion chambers with paint
thinner to see where it would leak
out. Filled each chamber evenly
and waited. Twelve hours later,
and other than evaporation, no
leaks! All chambers still even in
their fluid retention. </div>
<div
style="color:#000000;font-family:SFNSText,'Helvetica
Neue',Helvetica,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"> So
then I rotated the crank to get
all the pistons to an almost even
position and put paint thinner in
the cylinders at the same depth.
No quick leak, not one cylinder
faster than the others and all the
fluid finally drained out smoothly
and evenly in each cylinder. </div>
<div
style="color:#000000;font-family:SFNSText,'Helvetica
Neue',Helvetica,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"> I'm
a bit stumped. My next step is
taking the head to a guy in town,
an old machinist who builds his
own engines and runs his car at
Bonneville in the 300 mph range.
He knows what he's doing and I'm
sure he will give me some sage
advice and help. Also as a side
note, I went over the head with a
magnifying glass and can see now
cracks, but that doesn't mean they
are not there I know. I was just
thinking with a 100 pound plus
difference, something would be
obvious. </div>
<div
style="color:#000000;font-family:SFNSText,'Helvetica
Neue',Helvetica,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"> I
am also going to be taking off the
tappet cover on the side, inspect
all the lifters and see what I can
find there. Like I said, I'm a bit
perplexed, but I'm not done. I
will find something wrong! Here
are some photos for you, maybe you
can see something I can't.</div>
<div
style="color:#000000;font-family:SFNSText,'Helvetica
Neue',Helvetica,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><br>
</div>
<div
style="color:#000000;font-family:SFNSText,'Helvetica
Neue',Helvetica,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><img
alt="IMG_20200311_143602.jpg"
title="IMG_20200311_143602.jpg"
style="margin:10px 10px 10px
0px"
src="http:///index.php/inbox/attachment/filenameOriginal/IMG_20200311_143602.jpg/filenamefs/INBOX37806df7c51cc87def12df6be1eff39641fa0"
moz-do-not-send="true"></div>
<div
style="color:#000000;font-family:SFNSText,'Helvetica
Neue',Helvetica,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial">Here's
the head, upside down and you can
see the exhaust valve on number
two is blacker than the others,
but no cracks, chips, or visible
damage.</div>
<div
style="color:#000000;font-family:SFNSText,'Helvetica
Neue',Helvetica,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><img
alt="IMG_20200311_172123.jpg"
title="IMG_20200311_172123.jpg"
style="margin:10px 10px 10px
0px"
src="http:///index.php/inbox/attachment/filenameOriginal/IMG_20200311_172123.jpg/filenamefs/INBOX378063dbbf369419c0843730f10637ee2493c"
moz-do-not-send="true"></div>
<div
style="color:#000000;font-family:SFNSText,'Helvetica
Neue',Helvetica,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial">And
here's the fluid I placed in the
combustion chambers. It didn't
drain out and just sat there.</div>
</div>
<p><br>
</p>
</div>
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<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr">
<div dir="ltr">Best wishes
<div><br>
</div>
<div>John Harper</div>
<div><br>
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<div>AHC UK 100 Register Secretary</div>
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Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM. 505-352-1378 My World go here: <a class="moz-txt-link-abbreviated" href="http://WWW.PORTERBIKES.COM/">WWW.PORTERBIKES.COM/</a></pre>
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