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If it is a burnt valve it is not wise to travel any long distance as you
may damage the valve seat considerably if it has non hardened seat
fitted and, as David Nock says a cracked head may be the result. It is
unlikely to be rings/bore as the drop in compression is to big.
What also could be checked easily is if the crank case ventilation blows
considerably , if so it could be a hole in the piston but than again the
compression would probably be lower than 25psi and a holed piston is not
something that happens often.
Burnt valves on UK cars are a regular occurrence. I have had them on the
Spitfire, Land Rover and on the Jensen-Healey, never on the Italian,
French, USA, German, Japanese or Korean cars I had/have but may be I was
lucky there.
Kees Oudesluijs
Op 27-8-2019 om 20:08 schreef David Nock:
> Steve, are you planning on driving the Healey to Deadwood. If so I
> would not recommend to do that with a low compression. If it is a
> burnt valve then you will greatly increase the chances of cracking the
> head. If it is rings then you will use a lot of oil.
> I would recommend a leak test right away. Then you can determine if
> the low compression is a valve problem or a ring problem.
> David Nock
> healeydoc@sbcglobal.net
> 209 948 8767
> www.britishcarspecialists.com
>
> Help us have our Founder Norman Nock inducteed into the
> British Sportscar Hall of Fame, You can vote for your favorites
> by visiting the site at.
> www.britishsportscarhalloffame.org
> *Sent:* Tuesday, August 27, 2019 9:57 AM
> *Subject:* Re: [Healeys] 4 Cylinder Woes, cont'd.
> So ...Have you done a "leak-down test" to confirm where
> (intake/exhaust/rings) the bad one is bad?
> Jim
> On Tuesday, August 27, 2019, 3:02:14 AM UTC, Steven Kingsbury via
> Healeys <healeys@autox.team.net> wrote:
> Cylinder #1Â Â 150 lbs
> Cylinder #2Â Â Â 25 lbs
> Cylinder #3Â Â 155lbs
> Cylinder #4Â Â 150 lbs
> Steven Kingsbury
> BN1 kind of
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<p>If it is a burnt valve it is not wise to travel any long distance
as you may damage the valve seat considerably if it has non
hardened seat fitted and, as David Nock says a cracked head may be
the result. It is unlikely to be rings/bore as the drop in
compression is to big. <br>
</p>
<p>What also could be checked easily is if the crank case
ventilation blows considerably , if so it could be a hole in the
piston but than again the compression would probably be lower than
25psi and a holed piston is not something that happens often. <br>
</p>
<p>Burnt valves on UK cars are a regular occurrence. I have had them
on the Spitfire, Land Rover and on the Jensen-Healey, never on the
Italian, French, USA, German, Japanese or Korean cars I had/have
but may be I was lucky there.<br>
</p>
<p><br>
</p>
<p>Kees Oudesluijs</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Op 27-8-2019 om 20:08 schreef David
Nock:<br>
</div>
<blockquote type="cite"
cite="mid:2BBA0DA1B01E4BCD86659D67FC9811E0@DavidNockHP">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR:
#000000">
<div>Steve, are you planning on driving the Healey to
Deadwood. If so I would not recommend to do that with a low
compression. If it is a burnt valve then you will greatly
increase the chances of cracking the head. If it is rings
then you will use a lot of oil.</div>
<div>Â </div>
<div>I would recommend a leak test right away. Then you can
determine if the low compression is a valve problem or a
ring problem.</div>
<div>Â </div>
<div>Â </div>
<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR:
#000000">David Nock<br>
<a class="moz-txt-link-abbreviated"
href="mailto:healeydoc@sbcglobal.net";>healeydoc@sbcglobal.net</a><br>
209 948 8767<br>
<a class="moz-txt-link-abbreviated"
href="http://www.britishcarspecialists.com";>www.britishcarspecialists.com</a><br>
<br>
Help us have our Founder Norman Nock inducteed into the <br>
British Sportscar Hall of Fame, You can vote for your
favorites <br>
by visiting the site at.<br>
<a class="moz-txt-link-abbreviated"
href="http://www.britishsportscarhalloffame.org";>www.britishsportscarhalloffame.org</a><br>
</div>
<div style="FONT-SIZE: small; TEXT-DECORATION: none;
FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal;
COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline">
<div style="FONT: 10pt tahoma">
<div>Â </div>
<div style="BACKGROUND: #f5f5f5">
<div style="font-color: black"><b>From:</b> <a
title="healeys@autox.team.net"
href="mailto:healeys@autox.team.net";
moz-do-not-send="true">jim via Healeys</a> </div>
<div><b>Sent:</b> Tuesday, August 27, 2019 9:57 AM</div>
<div><b>To:</b> <a title="healeys@autox.team.net"
href="mailto:healeys@autox.team.net";
moz-do-not-send="true">healeys@autox.team.net</a> ;
<a title="airtightproductions@icloud.com"
href="mailto:airtightproductions@icloud.com";
moz-do-not-send="true">Steven Kingsbury</a> </div>
<div><b>Subject:</b> Re: [Healeys] 4 Cylinder Woes,
cont'd.</div>
</div>
</div>
<div>Â </div>
</div>
<div style="FONT-SIZE: small; TEXT-DECORATION: none;
FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal;
COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline">
<div class="ydpeee23017yahoo-style-wrap" style="FONT-SIZE:
13px; FONT-FAMILY: helvetica neue, helvetica, arial,
sans-serif">
<div dir="ltr" data-setdir="false">So ...Have you done a
"leak-down test" to confirm where (intake/exhaust/rings)
the bad one is bad?</div>
<div dir="ltr" data-setdir="false">Â </div>
<div dir="ltr" data-setdir="false">Jim<br>
</div>
<div>Â </div>
</div>
<div id="ydpe26307e9yahoo_quoted_6943209134"
class="ydpe26307e9yahoo_quoted">
<div style="FONT-SIZE: 13px; FONT-FAMILY: 'Helvetica
Neue', helvetica, arial, sans-serif; COLOR: #26282a">
<div>On Tuesday, August 27, 2019, 3:02:14 AM UTC, Steven
Kingsbury via Healeys <a class="moz-txt-link-rfc2396E"
href="mailto:healeys@autox.team.net";><healeys@autox.team.net></a>
wrote: </div>
<div>Â </div>
<div>Â </div>
<div>
<div id="ydpe26307e9yiv2867518748">
<div>
<div>Cylinder #1Â Â 150 lbs</div>
<div>Cylinder #2Â Â Â 25 lbs</div>
<div>Cylinder #3Â Â 155lbs</div>
<div>Cylinder #4Â Â 150 lbs</div>
<div>Â </div>
<div>Steven Kingsbury</div>
<div>BN1 kind of</div>
</div>
</div>
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<pre class="moz-quote-pre"
wrap="">_______________________________________________
Archive: <a class="moz-txt-link-freetext"
href="http://www.team.net/pipermail/healeys";>http://www.team.net/pipermail/healeys</a>
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href="http://autox.team.net/archive";>http://autox.team.net/archive</a>
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href="mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a>
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