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Re: [Healeys] Four cylinder woes, part two!

To: gradea1@charter.net, John Harper <ah100register@gmail.com>
Subject: Re: [Healeys] Four cylinder woes, part two!
From: jim via Healeys <healeys@autox.team.net>
Date: Thu, 12 Mar 2020 23:40:20 +0000 (UTC)
Cc: "healeys@autox.team.net" <healeys@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
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so a dollar short and a day late ...doing a "leak-down" test before pulling=
 the head would have helped give more information ...
google "leak down test" for more info
Jim

    On Thursday, March 12, 2020, 7:38:38 PM UTC, John Harper <ah100register=
@gmail.com> wrote: =20
=20
 Hank
The fact that number 2 exhaust valve=C2=A0is not the same colour as the oth=
ers might be a clue. Maybe it is not closing fully? It would be worth check=
ing for a stuck valve guide, broken spring or just lost=C2=A0 clearance. A =
partially seized rocker is possible but not likely. This may not be the pro=
blem but it would not take much effort to pull the valve out and check for =
any burning on the working face.
Best regards
On Thu, 12 Mar 2020 at 18:18, <gradea1@charter.net> 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=C2=A0 NGK plugs- use Champion N-5...maybe cause of =
carbon on valves. Unless cam is flat, valve spring broken or tappet rods be=
nt/broken, problem is in head-block fit.

Regards, Hank Leach



-----------------------------------------
From: "Steven Kingsbury via Healeys"=20
To: healeys@autox.teamnet
Cc:=20
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.=C2=A0=C2=A0=C2=A0So then I went back to the head, =
put the spark plugs back in and filled the combustion chambers with paint t=
hinner to see where it would leak out. Filled each chamber evenly and waite=
d. Twelve hours later, and other than evaporation, no leaks! All chambers s=
till even in their fluid retention.=C2=A0=C2=A0=C2=A0=C2=A0So then I rotate=
d 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 cylinde=
r faster than the others and all the fluid finally drained out smoothly and=
 evenly in each cylinder.=C2=A0=C2=A0=C2=A0=C2=A0I'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 w=
hat 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 n=
ow cracks, but that doesn't mean they are not there I know. I was just thin=
king with a 100 pound plus difference, something would be obvious.=C2=A0=C2=
=A0=C2=A0=C2=A0I am also going to be taking off the tappet cover on the sid=
e, 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 so=
me photos for you, maybe you can see something I can't.
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.And h=
ere's the fluid I placed in the combustion chambers. It didn't drain out an=
d just sat there.

_______________________________________________

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e

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ster@gmail.com




--=20
Best wishes
John Harper
AHC UK 100 Register Secretary______________________________________________=
_

Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archiv=
e

Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys

oo.com

 =20
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<html><head></head><body><div class=3D"ydp4a4a0e66yahoo-style-wrap" style=
=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px=
;" dir=3D"ltr" data-setdir=3D"false"><div></div><div dir=3D"ltr" data-setdi=
r=3D"false">so a dollar short and a day late ...doing a "leak-down" test be=
fore pulling the head would have helped give more information ...</div><div=
 dir=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=
=3D"false">google "leak down test" for more info</div><div dir=3D"ltr" data=
-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"false">Jim<br><=
/div><div><br></div>
       =20
        </div><div id=3D"ydp784e23a6yahoo_quoted_4061644638" class=3D"ydp78=
4e23a6yahoo_quoted">
            <div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
               =20
                <div>
                    On Thursday, March 12, 2020, 7:38:38 PM UTC, John Harpe=
r &lt;ah100register@gmail.com&gt; wrote:
                </div>
                <div><br></div>
                <div><br></div>
                <div><div id=3D"ydp784e23a6yiv9830477147"><div><div dir=3D"=
ltr">Hank<div><br clear=3D"none"></div><div>The fact that number 2 exhaust =
valve&nbsp;is not the same colour as the others might be a clue. Maybe it i=
s not closing fully? It would be worth checking for a stuck valve guide, br=
oken spring or just lost&nbsp; clearance. A partially seized rocker is poss=
ible 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 clear=3D"none"></div><div>Best regards</div></div><br clear=
=3D"none"><div class=3D"ydp784e23a6yiv9830477147gmail_quote"><div class=3D"=
ydp784e23a6yiv9830477147yqt6890016588" id=3D"ydp784e23a6yiv9830477147yqt315=
26"><div class=3D"ydp784e23a6yiv9830477147gmail_attr" dir=3D"ltr">On Thu, 1=
2 Mar 2020 at 18:18, &lt;<a shape=3D"rect" href=3D"mailto:gradea1@charter.n=
et" rel=3D"nofollow" target=3D"_blank">gradea1@charter.net</a>&gt; wrote:<b=
r clear=3D"none"></div><blockquote class=3D"ydp784e23a6yiv9830477147gmail_q=
uote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,2=
04);padding-left:1ex;"><div>Hi Steven-good to hear from you!<p>That's a nic=
e test, but I would magnaflux the head for cracks between 2-3 and have it s=
haved 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&nbsp; NGK plug=
s- 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 fi=
t.</p><p>Regards, Hank Leach<br clear=3D"none"><br clear=3D"none"></p><div>=
</div><p>-----------------------------------------</p>From: "Steven Kingsbu=
ry via Healeys" <u></u><br clear=3D"none">To: healeys@autox.teamnet<br clea=
r=3D"none">Cc: <br clear=3D"none">Sent: Thursday March 12 2020 9:40:25AM<br=
 clear=3D"none">Subject: [Healeys] Four cylinder woes, part two!<br clear=
=3D"none"><br clear=3D"none"><div><div style=3D"color:rgb(0,0,0);font-famil=
y:SFNSText,;">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 l=
bs in cylinder number two. So with the head off, I was prepared to find a p=
roblem with I flipped it over to expose the valves, no such luck. Other tha=
n 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=3D"color:rgb(0,0,0);=
font-family:SFNSText,;">&nbsp;&nbsp;&nbsp;So then I went back to the head, =
put the spark plugs back in and filled the combustion chambers with paint t=
hinner to see where it would leak out. Filled each chamber evenly and waite=
d. Twelve hours later, and other than evaporation, no leaks! All chambers s=
till even in their fluid retention.&nbsp;</div><div style=3D"color:rgb(0,0,=
0);font-family:SFNSText,;">&nbsp;&nbsp;&nbsp;So then I rotated the crank to=
 get all the pistons to an almost even position and put paint thinner in th=
e 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 eac=
h cylinder.&nbsp;</div><div style=3D"color:rgb(0,0,0);font-family:SFNSText,=
;">&nbsp;&nbsp;&nbsp;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 d=
ifference, something would be obvious.&nbsp;</div><div style=3D"color:rgb(0=
,0,0);font-family:SFNSText,;">&nbsp;&nbsp;&nbsp;I am also going to be takin=
g 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 somet=
hing I can't.</div><div style=3D"color:rgb(0,0,0);font-family:SFNSText,;"><=
br clear=3D"none"></div><div style=3D"color:rgb(0,0,0);font-family:SFNSText=
,;"><img src=3D"http:///index.php/inbox/attachment/filenameOriginal/IMG_202=
00311_143602.jpg/filenamefs/INBOX37806df7c51cc87def12df6be1eff39641fa0" alt=
=3D"IMG_20200311_143602.jpg" title=3D"IMG_20200311_143602.jpg" style=3D"mar=
gin:10px 10px 10px 0px;" data-inlineimagemanipulating=3D"true" class=3D"" d=
ata-id=3D"1584056243010"></div><div style=3D"color:rgb(0,0,0);font-family:S=
FNSText,;">Here's the head, upside down and you can see the exhaust valve o=
n number two is blacker than the others, but no cracks, chips, or visible d=
amage.</div><div style=3D"color:rgb(0,0,0);font-family:SFNSText,;"><img src=
=3D"http:///index.php/inbox/attachment/filenameOriginal/IMG_20200311_172123=
.jpg/filenamefs/INBOX378063dbbf369419c0843730f10637ee2493c" alt=3D"IMG_2020=
0311_172123.jpg" title=3D"IMG_20200311_172123.jpg" style=3D"margin:10px 10p=
x 10px 0px;" data-inlineimagemanipulating=3D"true" class=3D"" data-id=3D"15=
84056243066"></div><div style=3D"color:rgb(0,0,0);font-family:SFNSText,;">A=
nd here's the fluid I placed in the combustion chambers. It didn't drain ou=
t and just sat there.</div></div><u></u><p></p></div>
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</blockquote></div></div><br clear=3D"all"><div><br clear=3D"none"></div>--=
 <br clear=3D"none"><div class=3D"ydp784e23a6yiv9830477147gmail_signature" =
dir=3D"ltr"><div dir=3D"ltr">Best wishes<div><br clear=3D"none"></div><div>=
John Harper</div><div><br clear=3D"none"></div><div>AHC UK 100 Register Sec=
retary</div></div></div></div></div><div class=3D"ydp784e23a6yqt6890016588"=
 id=3D"ydp784e23a6yqt79708">_______________________________________________=
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