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Hank
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.
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
> and have it shaved flat..could be a head gasket leak due to warped
> head...especially if valves and rings checked good.
>
> 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.
>
> Regards, Hank Leach
>
> -----------------------------------------
> From: "Steven Kingsbury via Healeys"
> To: healeys@autox.teamnet
> 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
> 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.
> 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.
> 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.
> 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.
> 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.
>
> [image: IMG_20200311_143602.jpg]
> 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.
> [image: IMG_20200311_172123.jpg]
> And here's the fluid I placed in the combustion chambers. It didn't drain
> out and just sat there.
>
> _______________________________________________
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>
--
Best wishes
John Harper
AHC UK 100 Register Secretary
--000000000000fb1e6205a0ad7e6c
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">Hank<div><br></div><div>The fact that number 2 exhaust val=
ve=C2=A0is not the same colour as the others might be a clue. Maybe it is n=
ot closing fully? It would be worth checking for a stuck valve guide, broke=
n spring or just lost=C2=A0 clearance. A partially seized rocker is possibl=
e but not likely. This may not be the problem but it would not take much ef=
fort 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"gmail_quo=
te"><div dir=3D"ltr" class=3D"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"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>Hi Steven-g=
ood to hear from you!<p>That's a nice test, but I would magnaflux the h=
ead 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=C2=A0 NGK plugs- use Champion N-5...maybe cau=
se of carbon on valves. Unless cam is flat, valve spring broken or tappet r=
ods bent/broken, problem is in head-block fit.</p><p>Regards, Hank Leach<br=
><br></p><div></div><p>-----------------------------------------</p>From: &=
quot;Steven Kingsbury via Healeys" <u></u><br>To: healeys@autox.teamne=
t<br>Cc: <br>Sent: Thursday March 12 2020 9:40:25AM<br>Subject: [Healeys] F=
our cylinder woes, part two!<br><br><div><div style=3D"color:rgb(0,0,0);fon=
t-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif;font-size=
:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:nor=
mal;font-weight:300;letter-spacing:normal;text-align:start;text-indent:0px;=
text-transform:none;white-space:normal;word-spacing:0px;text-decoration-sty=
le:initial;text-decoration-color:initial">Okay, here's the latest! I fi=
nally got to pull my head If you remember, I had 155 lbs of pressure in cyl=
inders 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 blac=
k, no cracks, nothing stuck and it looked fine. So then I went to look into=
the cylinders themselves, walls smooth, flat high compression pistons smoo=
th, 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,"Helvetica Neue&q=
uot;,Helvetica,sans-serif;font-size:15px;font-style:normal;font-variant-lig=
atures:normal;font-variant-caps:normal;font-weight:300;letter-spacing:norma=
l;text-align:start;text-indent:0px;text-transform:none;white-space:normal;w=
ord-spacing:0px;text-decoration-style:initial;text-decoration-color:initial=
">=C2=A0=C2=A0=C2=A0So then I went back to the head, put the spark plugs ba=
ck 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 flu=
id retention.=C2=A0</div><div style=3D"color:rgb(0,0,0);font-family:SFNSTex=
t,"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:n=
one;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-=
decoration-color:initial">=C2=A0=C2=A0=C2=A0So 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 t=
he others and all the fluid finally drained out smoothly and evenly in each=
cylinder.=C2=A0</div><div style=3D"color:rgb(0,0,0);font-family:SFNSText,&=
quot;Helvetica Neue",Helvetica,sans-serif;font-size:15px;font-style:no=
rmal;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-dec=
oration-color:initial">=C2=A0=C2=A0=C2=A0I'm a bit stumped. My next ste=
p 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 s=
ee now cracks, but that doesn't mean they are not there I know. I was j=
ust thinking with a 100 pound plus difference, something would be obvious.=
=C2=A0</div><div style=3D"color:rgb(0,0,0);font-family:SFNSText,"Helve=
tica Neue",Helvetica,sans-serif;font-size:15px;font-style:normal;font-=
variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-sp=
acing:normal;text-align:start;text-indent:0px;text-transform:none;white-spa=
ce:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-co=
lor:initial">=C2=A0=C2=A0=C2=A0I am also going to be taking off the tappet =
cover on the side, inspect all the lifters and see what I can find there. L=
ike I said, I'm a bit perplexed, but I'm not done. I will find some=
thing wrong! Here are some photos for you, maybe you can see something I ca=
n't.</div><div style=3D"color:rgb(0,0,0);font-family:SFNSText,"Hel=
vetica Neue",Helvetica,sans-serif;font-size:15px;font-style:normal;fon=
t-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-=
spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-s=
pace:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-=
color:initial"><br></div><div style=3D"color:rgb(0,0,0);font-family:SFNSTex=
t,"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:n=
one;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-=
decoration-color:initial"><img src=3D"http:///index.php/inbox/attachment/fi=
lenameOriginal/IMG_20200311_143602.jpg/filenamefs/INBOX37806df7c51cc87def12=
df6be1eff39641fa0" alt=3D"IMG_20200311_143602.jpg" title=3D"IMG_20200311_14=
3602.jpg" style=3D"margin: 10px 10px 10px 0px;"></div><div style=3D"color:r=
gb(0,0,0);font-family:SFNSText,"Helvetica Neue",Helvetica,sans-se=
rif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-var=
iant-caps:normal;font-weight:300;letter-spacing:normal;text-align:start;tex=
t-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-d=
ecoration-style:initial;text-decoration-color:initial">Here's the head,=
upside down and you can see the exhaust valve on number two is blacker tha=
n the others, but no cracks, chips, or visible damage.</div><div style=3D"c=
olor:rgb(0,0,0);font-family:SFNSText,"Helvetica Neue",Helvetica,s=
ans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;fo=
nt-variant-caps:normal;font-weight:300;letter-spacing:normal;text-align:sta=
rt;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;=
text-decoration-style:initial;text-decoration-color:initial"><img src=3D"ht=
tp:///index.php/inbox/attachment/filenameOriginal/IMG_20200311_172123.jpg/f=
ilenamefs/INBOX378063dbbf369419c0843730f10637ee2493c" alt=3D"IMG_20200311_1=
72123.jpg" title=3D"IMG_20200311_172123.jpg" style=3D"margin: 10px 10px 10p=
x 0px;"></div><div style=3D"color:rgb(0,0,0);font-family:SFNSText,"Hel=
vetica Neue",Helvetica,sans-serif;font-size:15px;font-style:normal;fon=
t-variant-ligatures:normal;font-variant-caps:normal;font-weight:300;letter-=
spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-s=
pace: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><u></u><p></p></di=
v>
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</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
class=3D"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></d=
iv></div>
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