<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>Should be "further recessed in the HEAD than the earlier engines"</p>
<br>
<div class="moz-cite-prefix">On 8/14/2017 9:18 AM, Bob Spidell
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:5f376783-3e74-a97a-23b9-b725a6a3d8d7@comcast.net">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<p>I just tore down a BJ8 engine with about 110K miles since
rebuild. I always ran at 15deg per the manual and there was no
damage to any of the pistons or rings (see attached). Of
course, I always ran 91-octane or better gas (except on a couple
occasions when it wasn't available). I never heard any knock,
but my co-pilot on my long trips said he did when I
inadvertently lugged the engine a couple times.<br>
</p>
<p>Somebody did a 'study' on why the BJ8 engine needed so much
initial advance, I believe the theory is that the plugs are set
further recessed in the plug than the earlier engines.</p>
<p>Bob<br>
</p>
<br>
<div class="moz-cite-prefix">On 8/14/2017 8:12 AM, David Porter
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:190e84f9-fbf7-c76d-1f02-fd277d89e01c@porterscustom.com">
<meta http-equiv="Content-Type" content="text/html;
charset=utf-8">
<p>yeah.. I get that. It's just that for ANY stock engine to
have more than 10 degrees initial is unusual.. sure they seem
to run better, but when the total is too high bad things will
happen in due course... </p>
<br>
<div class="moz-cite-prefix">On 8/14/2017 7:33 AM, BJ8Healeys
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:011b01d31501$fc4b4be0$f4e1e3a0$@rr.com">
<meta http-equiv="Content-Type" content="text/html;
charset=utf-8">
<meta name="Generator" content="Microsoft Word 12 (filtered
medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoPlainText, li.MsoPlainText, div.MsoPlainText
{mso-style-priority:99;
mso-style-link:"Plain Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:Consolas;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.PlainTextChar
{mso-style-name:"Plain Text Char";
mso-style-priority:99;
mso-style-link:"Plain Text";
font-family:Consolas;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
<div class="WordSection1">
<p class="MsoPlainText">Dave, I'm not the one having the
problem and asking the question; but I was responding to
your statement that the timing is set to 6° @ 750 RPM,
which does not agree with what is published in the BMC
workshop manual for the Mk III engine (see attached). My
Glenn's AUSTIN AUSTIN-HEALEY REPAIR AND TUNEUP GUIDE
(copyright 1965, and also says CHILTON 1432 on the spine)
gives the same numbers as the BMC manual. I do understand
what you mean about the advance (I have a Mallory
Dual-Point distributor with mechanical advance only), but
questioned where your numbers came from. <o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Steve Byers<o:p></o:p></p>
<p class="MsoPlainText">HBJ8L/36666<o:p></o:p></p>
<p class="MsoPlainText">BJ8 Registry<o:p></o:p></p>
<p class="MsoPlainText">AHCA Delegate at Large<o:p></o:p></p>
<p class="MsoPlainText">Havelock, NC <o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<br>
</div>
</blockquote>
</blockquote>
<pre wrap="">Unsubscribe/Manage: <a class="moz-txt-link-freetext" href="http://autox.team.net/mailman/options/healeys/bspidell@comcast.net">http://autox.team.net/mailman/options/healeys/bspidell@comcast.net</a>
</pre>
</blockquote>
<br>
</body>
</html>