<HTML xmlns="http://www.w3.org/TR/REC-html40" xmlns:v =
"urn:schemas-microsoft-com:vml" xmlns:o =
"urn:schemas-microsoft-com:office:office" xmlns:w =
"urn:schemas-microsoft-com:office:word" xmlns:m =
"http://schemas.microsoft.com/office/2004/12/omml"><HEAD>
<META content="text/html; charset=utf-8" http-equiv=Content-Type>
<META name=Generator content="Microsoft Word 14 (filtered medium)">
<STYLE><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","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;}
span.EmailStyle17
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></STYLE>
</HEAD>
<BODY lang=EN-US dir=ltr link=blue vLink=purple>
<DIV dir=ltr>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>A rather comprehensive article though it was a bit confusing when it when
it referred to a car going up a hill and driving on a steady flat
road.</DIV>
<DIV> </DIV>
<DIV>“<SPAN
style="FONT-FAMILY: ; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FLOAT: none; COLOR: ; TEXT-ALIGN: left; ORPHANS: 2; WIDOWS: 2; DISPLAY: inline !important; LETTER-SPACING: normal; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><FONT
face=Tahoma><FONT style="FONT-SIZE: 10.5pt; BACKGROUND-COLOR: #f6f6f6"
color=#111111>In other words this is an engine-load dependent advance. This
would be a typical situation<STRONG> when climbing a steep hill</STRONG>, or
<STRONG>driving at low rpms, light throttle, conditions</STRONG>. In
<STRONG>these conditions there is high engine vacuum</STRONG>, so the vacuum
signal applied to the diaphragm in the canister, via the hose, will cause a
'pull' effect on the arm, which moves the breaker plate and results in a timing
advance.”</FONT></FONT></SPAN></DIV>
<DIV> </DIV>
<DIV>I’m not seeing the high vacuum stated when going up a steep hill. The
throttle is likely wide open (or there about) and the result would be a drop in
vacuum. And at first I thought they might be contrasting the differences, but
the next sentence states “In <U>these</U> conditions there is high vacuum...”
and that has the appearance of stating they are similar.</DIV>
<DIV> </DIV>
<DIV><FONT face=Tahoma><SPAN
style="FONT-FAMILY: ; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FLOAT: none; COLOR: ; TEXT-ALIGN: left; ORPHANS: 2; WIDOWS: 2; DISPLAY: inline !important; LETTER-SPACING: normal; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><FONT
color=#111111><FONT style="FONT-SIZE: 10.5pt; BACKGROUND-COLOR: #f6f6f6">Step
6</FONT></FONT></SPAN><FONT style="FONT-SIZE: 10.5pt"><BR
style="FONT-SIZE: 14px; FONT-FAMILY: tahoma, geneva, sans-serif; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(17,17,17); FONT-STYLE: normal; TEXT-ALIGN: left; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(246,246,246); TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"></FONT><SPAN
style="FONT-FAMILY: ; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FLOAT: none; COLOR: ; TEXT-ALIGN: left; ORPHANS: 2; WIDOWS: 2; DISPLAY: inline !important; LETTER-SPACING: normal; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><FONT
color=#111111><FONT style="FONT-SIZE: 10.5pt; BACKGROUND-COLOR: #f6f6f6">install
the springs from the recurve kit and bend the tabs to keep tension on both
springs so the advance shaft returns to its idle
position</FONT></FONT></SPAN></FONT>
<DIV style="TEXT-DECORATION: ; FONT-FAMILY: ; COLOR: ; DISPLAY: inline"></DIV>
<DIV style="FONT-FAMILY: ; LINE-HEIGHT: normal">
<DIV><FONT style="size: 3" face=Calibri></FONT><FONT face=Tahoma><FONT
style="FONT-SIZE: 10pt"></FONT></FONT> </DIV></DIV></DIV>
<DIV>This (“Step 6”) to me is one of the most important reasons proper attention
should be used to set up the distributor curve. Often people will just
throw in weaker springs that can create (additional) advance at idle. The end
results will be an increased amount of initial advance and if compensated but
reducing the initial advance then the net effect will be reduced total timing.
It’s the old “dog chasing its tail.” The spring tension needs to be set so
as to not induce any advance at idle, yet not so tight it negates the effect of
the weaker springs. At the least (when done “in car”) the springs should be
changed with the initial advance being known and the distributor locked down.
Then the spring tension adjusted until at idle the timing is back to its
previous initial setting. This should also be “stepped” into so that there is
enough, but minimal tension to achieve the desired results. Ideally a
distributor machine would be used. While the article addresses this it seems to
get somewhat lost in the article length. </DIV>
<DIV><FONT color=#000000 face=Calibri><SPAN
style="FONT-FAMILY: ; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; FLOAT: none; COLOR: ; TEXT-ALIGN: left; ORPHANS: 2; WIDOWS: 2; DISPLAY: inline !important; LETTER-SPACING: normal; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"></SPAN></FONT> </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><FONT size=3 face=Calibri>I guess this is the point where many chime in to
just $pend the money and go with an M$D or similar electronic system. But,
that wasn’t the point of the article. And some people desire the stock
appearance but want to maximize their engines capability.</FONT></DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B></B> </DIV>
<DIV style="font-color: black"><B></B> </DIV>
<DIV style="font-color: black"><B></B> </DIV>
<DIV style="font-color: black"><B>From:</B> <A title=tigers@autox.team.net
href="mailto:tigers@autox.team.net">Jerry Mo Christopherson via Tigers</A>
</DIV>
<DIV><B>Sent:</B> Wednesday, October 25, 2017 11:53 AM</DIV>
<DIV><B>To:</B> <A title=TIGERS@AUTOX.TEAM.NET
href="mailto:TIGERS@AUTOX.TEAM.NET">Tiger Autox</A> </DIV>
<DIV><B>Subject:</B> [Tigers] FW: The Ultimate Duraspark Distributor Timing
Guide.</DIV></DIV></DIV>
<DIV> </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=WordSection1>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'>Here
is an article that a lot of you know very well, BUT for those that still have
questions on ignition timing this is well done.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'>(The
Duraspark distributor is my distributor of choice).<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'>Jerry
Christopherson<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'>9473187<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'>TAC
insp.#58 <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'><BR><B>Subject:</B>
The Ultimate Duraspark Distributor Timing Guide.<o:p></o:p></SPAN></P>
<P class=MsoNormal><o:p></o:p> </P>
<DIV>
<P class=MsoNormal><BR><A
href="http://vb.foureyedpride.com/showthread.php?22229-The-Ultimate-Duraspark-Distributor-Timing-Guide">http://vb.foureyedpride.com/showthread.php?22229-The-Ultimate-Duraspark-Distributor-Timing-Guide</A><o:p></o:p></P></DIV></DIV></DIV></DIV></DIV><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br />
<table style="border-top: 1px solid #D3D4DE;">
<tr>
<td style="width: 55px; padding-top: 13px;"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon" target="_blank"><img src="https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" alt="" width="46" height="29" style="width: 46px; height: 29px;" /></a></td>
<td style="width: 470px; padding-top: 12px; color: #41424e; font-size: 13px; font-family: Arial, Helvetica, sans-serif; line-height: 18px;">Virus-free. <a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=link" target="_blank" style="color: #4453ea;">www.avast.com</a>
</td>
</tr>
</table><a href="#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"> </a></div></BODY></HTML>