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Another consideration is whether you have bronze valve guides in an iron he=
ad. These can cause problems due to the different thermal expansion rates o=
f the materials. The iron can crush the bronze and cause the valve to stick=
.
Bill Lawrence
BN1 #554
________________________________
From: Healeys <healeys-bounces@autox.team.net> on behalf of Kees Oudesluijs=
<coudesluijs@chello.nl>
Sent: Friday, March 13, 2020 8:19:28 AM
To: healeys@autox.team.net <healeys@autox.team.net>
Subject: Re: [Healeys] Four cylinder woes, part two!
Measure the bores in several places first. If no significant wear is appare=
nt leave the pistons and rings well alone. Also look for ridges near the to=
p of the bores. If they are not present, wear is not very likely. If the bo=
res are fine, piston ring wear is not likely. Valves do rock a bit in the g=
uides. 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.
If there is wear in the cylinders however have the block rebored and fit ne=
w pistons and rings
Burning some oil is nothing to worry about on the old engines. When new 1lt=
r 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 o=
il 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
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.
Replacing the bearing shells and seals is good practice if the bottom end c=
omes 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.
Kees Oudesluijs
Op 13-3-2020 om 00:29 schreef Steven Kingsbury via Healeys:
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 o=
il I was told and I'm going to have to also pull the pistons to redo the ri=
ngs. 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 bi=
t going up and down. The head though is not warped and is straight, but I w=
ill get it checked out for cracks and resurface the head to make it super s=
mooth.
I'm also going to drop the pan, and push the pistons out of the block an=
d 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.
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.
Basically, I'm making sure everything is correct this time and then I wi=
ll 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.
Thanks for all the input, suggestions and guesses. This is actually quit=
e the fun project.
Steven Kingsbury
On March 12, 2020 at 12:38 PM, John Harper <ah100register@gmail.com><mailto=
:ah100register@gmail.com> wrote:
Hank
The fact that number 2 exhaust valve is not the same colour as the others m=
ight be a clue. Maybe it is not closing fully? It would be worth checking f=
or 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 i=
t would not take much effort to pull the valve out and check for any burnin=
g on the working face.
Best regards
et>> wrote:
Hi Steven-good to hear from you!
That's a nice test, but I would magnaflux the head for cracks between 2-3 a=
nd have it shaved flat..could be a head gasket leak due to warped head...es=
pecially if valves and rings checked good.
Also, I don't recommend NGK plugs- use Champion N-5...maybe cause of carbo=
n on valves. Unless cam is flat, valve spring broken or tappet rods bent/br=
oken, problem is in head-block fit.
Regards, Hank Leach
-----------------------------------------
From: "Steven Kingsbury via Healeys"
Cc:
Sent: Thursday March 12 2020 9:40:25AM
Subject: [Healeys] Four cylinder woes, part two!
Okay, here's the latest! I finally got to pull my head If you remember, I h=
ad 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 e=
xhaust 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 o=
ther than that and good.
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 e=
vaporation, no leaks! All chambers still even in their fluid retention.
So then I rotated the crank to get all the pistons to an almost even pos=
ition and put paint thinner in the cylinders at the same depth. No quick le=
ak, not one cylinder faster than the others and all the fluid finally drain=
ed out smoothly and evenly in each cylinder.
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 so=
me sage advice and help. Also as a side note, I went over the head with a m=
agnifying 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, somethi=
ng would be obvious.
I am also going to be taking off the tappet cover on the side, inspect a=
ll the lifters and see what I can find there. Like I said, I'm a bit perple=
xed, but I'm not done. I will find something wrong! Here are some photos fo=
r you, maybe you can see something I can't.
[IMG_20200311_143602.jpg]
Here's the head, upside down and you can see the exhaust valve on number tw=
o is blacker than the others, but no cracks, chips, or visible damage.
[IMG_20200311_172123.jpg]
And here's the fluid I placed in the combustion chambers. It didn't drain o=
ut and just sat there.
_______________________________________________
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archiv=
e
http://autox.team.net/mailman/listinfo/healeys
ster@gmail.com
--
Best wishes
John Harper
AHC UK 100 Register Secretary
_______________________________________________
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archiv=
e
http://autox.team.net/mailman/listinfo/healeys
js@chello.nl
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
>
</head>
<body>
Another consideration is whether you have bronze valve guides in an iron he=
ad. These can cause problems due to the different thermal expansion rates o=
f the materials. The iron can crush the bronze and cause the valve to stick=
.<br>
<br>
Bill Lawrence<br>
BN1 #554<br>
<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Healeys <healeys-b=
ounces@autox.team.net> on behalf of Kees Oudesluijs <coudesluijs@chel=
lo.nl><br>
<b>Sent:</b> Friday, March 13, 2020 8:19:28 AM<br>
<b>To:</b> healeys@autox.team.net <healeys@autox.team.net><br>
<b>Subject:</b> Re: [Healeys] Four cylinder woes, part two!</font>
<div> </div>
</div>
<div>
<p>Measure the bores in several places first. If no significant wear is app=
arent 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 expa=
nd in the guides when the engine is running. You may or may not use cap sea=
ls 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 runni=
ng in during which oil consumption could be much higher). Check the crank c=
ase ventilation system, when dirty/blocked
it can be a cause of considerable oil consumption. Anyway you probably loo=
se most oil leaking. Overfilling the sump is another cause of oil consumpti=
on as excessive oil will be expelled through the crank case ventilation sys=
tem<br>
</p>
<p>The head should be dead straight but the surface does not need to be sup=
er 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 en=
d 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 ch=
eck if these are within limits.<br>
</p>
<p>Kees Oudesluijs</p>
<p><br>
</p>
<div class=3D"x_moz-cite-prefix">Op 13-3-2020 om 00:29 schreef Steven Kings=
bury via Healeys:<br>
</div>
<blockquote type=3D"cite">
<div>Latest update, took the head to a friend's machine shop and took the v=
alves out. All the intake vales had build up of soft carbon, a sign of burn=
ing oil I was told and I'm going to have to also pull the pistons to redo t=
he 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 h=
ead 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 cr=
ank to make sure it's in good shape and install new rod bearings when in th=
ere. </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 pr=
oblem. Right now, in for a penny, in for a pound. Sterling that is.</div>
<div> Basically, I'm making sure everything is correct thi=
s 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 th=
ey happen.</div>
<div> Thanks for all the input, suggestions and guesses. T=
his 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 class=3D"x_moz-txt-link-rfc23=
96E" href=3D"mailto:ah100register@gmail.com";>
<ah100register@gmail.com></a> wrote:<br>
<br>
</div>
<div>
<blockquote type=3D"cite">
<div class=3D"x_msg-quote">
<div dir=3D"ltr">Hank
<div><br>
</div>
<div>The fact that number 2 exhaust valve is not the same colour as th=
e 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 clearanc=
e. 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 class=3D"x_gmail_quote">
<div dir=3D"ltr" class=3D"x_gmail_attr">On Thu, 12 Mar 2020 at 18:18, <<=
a href=3D"mailto:gradea1@charter.net";>gradea1@charter.net</a>> wrote:<br=
>
</div>
<blockquote class=3D"x_gmail_quote" style=3D"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=3D"mailto:healeys@autox.teamnet";>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=3D"color:#000000; font-family:SFNSText,'Helvetica Neue',Helvetic=
a,sans-serif; font-size:15px; font-style:normal; font-variant-ligatures:nor=
mal; font-variant-caps:normal; font-weight:300; letter-spacing:normal; text=
-align:start; text-indent:0px; text-transform:none; white-space:normal; wor=
d-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 h=
ad 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 cr=
acks, nothing stuck and it looked fine. So then I went to look into the cyl=
inders themselves, walls smooth, flat high compression pistons smooth, numb=
er three a bit rough on the top,
but other than that and good.</div>
<div style=3D"color:#000000; font-family:SFNSText,'Helvetica Neue',Helvetic=
a,sans-serif; font-size:15px; font-style:normal; font-variant-ligatures:nor=
mal; font-variant-caps:normal; font-weight:300; letter-spacing:normal; text=
-align:start; text-indent:0px; text-transform:none; white-space:normal; wor=
d-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 w=
ould leak out. Filled each chamber evenly and waited. Twelve hours later, a=
nd other than evaporation, no leaks! All chambers
still even in their fluid retention. </div>
<div style=3D"color:#000000; font-family:SFNSText,'Helvetica Neue',Helvetic=
a,sans-serif; font-size:15px; font-style:normal; font-variant-ligatures:nor=
mal; font-variant-caps:normal; font-weight:300; letter-spacing:normal; text=
-align:start; text-indent:0px; text-transform:none; white-space:normal; wor=
d-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 dep=
th. No quick leak, not one cylinder faster than the others and all the flui=
d finally drained out smoothly and evenly in each
cylinder. </div>
<div style=3D"color:#000000; font-family:SFNSText,'Helvetica Neue',Helvetic=
a,sans-serif; font-size:15px; font-style:normal; font-variant-ligatures:nor=
mal; font-variant-caps:normal; font-weight:300; letter-spacing:normal; text=
-align:start; text-indent:0px; text-transform:none; white-space:normal; wor=
d-spacing:0px; text-decoration-style:initial; text-decoration-color:initial=
">
I'm a bit stumped. My next step is taking the head to a g=
uy 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 thinkin=
g with a 100 pound plus difference, something would be obvious. </div>
<div style=3D"color:#000000; font-family:SFNSText,'Helvetica Neue',Helvetic=
a,sans-serif; font-size:15px; font-style:normal; font-variant-ligatures:nor=
mal; font-variant-caps:normal; font-weight:300; letter-spacing:normal; text=
-align:start; text-indent:0px; text-transform:none; white-space:normal; wor=
d-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=3D"color:#000000; font-family:SFNSText,'Helvetica Neue',Helvetic=
a,sans-serif; font-size:15px; font-style:normal; font-variant-ligatures:nor=
mal; font-variant-caps:normal; font-weight:300; letter-spacing:normal; text=
-align:start; text-indent:0px; text-transform:none; white-space:normal; wor=
d-spacing:0px; text-decoration-style:initial; text-decoration-color:initial=
">
<br>
</div>
<div style=3D"color:#000000; font-family:SFNSText,'Helvetica Neue',Helvetic=
a,sans-serif; font-size:15px; font-style:normal; font-variant-ligatures:nor=
mal; font-variant-caps:normal; font-weight:300; letter-spacing:normal; text=
-align:start; text-indent:0px; text-transform:none; white-space:normal; wor=
d-spacing:0px; text-decoration-style:initial; text-decoration-color:initial=
">
<img alt=3D"IMG_20200311_143602.jpg" title=3D"IMG_20200311_143602.jpg" styl=
e=3D"margin:10px 10px 10px 0px" src=3D"http:///index.php/inbox/attachment/f=
ilenameOriginal/IMG_20200311_143602.jpg/filenamefs/INBOX37806df7c51cc87def1=
2df6be1eff39641fa0"></div>
<div style=3D"color:#000000; font-family:SFNSText,'Helvetica Neue',Helvetic=
a,sans-serif; font-size:15px; font-style:normal; font-variant-ligatures:nor=
mal; font-variant-caps:normal; font-weight:300; letter-spacing:normal; text=
-align:start; text-indent:0px; text-transform:none; white-space:normal; wor=
d-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 tw=
o is blacker than the others, but no cracks, chips, or visible damage.</div=
>
<div style=3D"color:#000000; font-family:SFNSText,'Helvetica Neue',Helvetic=
a,sans-serif; font-size:15px; font-style:normal; font-variant-ligatures:nor=
mal; font-variant-caps:normal; font-weight:300; letter-spacing:normal; text=
-align:start; text-indent:0px; text-transform:none; white-space:normal; wor=
d-spacing:0px; text-decoration-style:initial; text-decoration-color:initial=
">
<img alt=3D"IMG_20200311_172123.jpg" title=3D"IMG_20200311_172123.jpg" styl=
e=3D"margin:10px 10px 10px 0px" src=3D"http:///index.php/inbox/attachment/f=
ilenameOriginal/IMG_20200311_172123.jpg/filenamefs/INBOX378063dbbf369419c08=
43730f10637ee2493c"></div>
<div style=3D"color:#000000; font-family:SFNSText,'Helvetica Neue',Helvetic=
a,sans-serif; font-size:15px; font-style:normal; font-variant-ligatures:nor=
mal; font-variant-caps:normal; font-weight:300; letter-spacing:normal; text=
-align:start; text-indent:0px; text-transform:none; white-space:normal; wor=
d-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 o=
ut and just sat there.</div>
</div>
<p><br>
</p>
</div>
_______________________________________________<br>
Support <a href=3D"http://Team.Net";>Team.Net</a> <a href=3D"http://www.team=
.net/donate.html">
<br>
Archive: <a href=3D"http://www.team.net/pipermail/healeys";>http://www.team.=
net/pipermail/healeys</a>
<a href=3D"http://autox.team.net/archive";>http://autox.team.net/archive</a>=
<br>
<br>
<a href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a><br>
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m.net/mailman/listinfo/healeys</a><br>
<br>
s/ah100register@gmail.com">
http://autox.team.net/mailman/options/healeys/ah100register@gmail.com</a><b=
r>
<br>
</blockquote>
</div>
<br clear=3D"all">
<div><br>
</div>
-- <br>
<div dir=3D"ltr" class=3D"x_gmail_signature">
<div dir=3D"ltr">Best wishes
<div><br>
</div>
<div>John Harper</div>
<div><br>
</div>
<div>AHC UK 100 Register Secretary</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<fieldset class=3D"x_mimeAttachmentHeader"></fieldset>
<pre class=3D"x_moz-quote-pre">____________________________________________=
___
am.net/donate.html">http://www.team.net/donate.html</a>
Archive: <a class=3D"x_moz-txt-link-freetext" href=3D"http://www.team.net/p=
ipermail/healeys">http://www.team.net/pipermail/healeys</a> <a class=3D"x_m=
oz-txt-link-freetext" href=3D"http://autox.team.net/archive";>http://autox.t=
eam.net/archive</a>
<a class=3D"x_moz-txt-link-abbreviated" href=3D"mailto:Healeys@autox.team.n=
et">Healeys@autox.team.net</a>
<a class=3D"x_moz-txt-link-freetext" href=3D"http://autox.team.net/mailman/=
listinfo/healeys">http://autox.team.net/mailman/listinfo/healeys</a>
ox.team.net/mailman/options/healeys/coudesluijs@chello.nl">http://autox.tea=
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