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Didn't you say your strobe showed 15? best bet is to always make sure
you don't exceed the total advance at 4500RPM 34-36 is a safe range. the
original distributors start advance at ~750 RPM, so make sure you set
initial at that low RPM not at 1000. Unless you have degree wheeled the
valve timing, which could vary by 5 degrees on either side, I'd rely on
the ignition timing with a good strobe light. Dave
On 4/24/2019 7:50 AM, simon.lachlan@alexarevel.plus.com wrote:
>
> Thanks for this.
>
> My notes tell me that Denis Welch, the man himself, advised:-
>
> ?a) Static:-100 degrees ATDC on No1 when it?s inlet is fully open.
>
> b) Running: 12-15 degrees BTDC @1000 rpm
>
> 33-38 degrees max @ max rpm (just before it starts to pink)?
>
> And, when I bought their ?Fast Road? cam, son Jeremy advised:-
>
> ?15° to 18° @ 1,000rpm
>
> 34° to 38° @ 4,500rpm?.
>
> Most people seem to go for 15° as a start point. Or that?s what I
> thought?between us are we confusing static with stroboscopic timing?
>
> Simon
>
> *From:*Healeys <healeys-bounces@autox.team.net> *On Behalf Of *David P
> *Sent:* 24 April 2019 14:17
> *To:* healeys@autox.team.net
> *Subject:* Re: [Healeys] Timing mark
>
> My question is why are you running it a twice the advance the factory
> advises? Excellent way to introduce preignition.
>
> On 4/24/2019 6:21 AM, simon.lachlan@alexarevel.plus.com
>
> I bought a ProRace Harmonic Balancer a few months back and
> installed it whilst attending to some other engine chores?.new oil
> pump, engine mounts, reverting to SUs from Webers etc.
>
> Soooo?.I was given sensible advice to mark the 15° line on the
> balancer as the markings are virtually invisible once the thing?s
> installed, let alone spinning at +/- 1,000rpm.
>
> Now for the confession. The car?s not been running
> brilliantly?.some hesitation, particularly under load, from +/-
> 4,000 rpm. Leaving out fuel issues for the sake of this
> discussion, I was thinking about the timing again. And I know that
> it?s been showing 15° BTDC with my brand new timing light. But I
> was still not sure so I looked at the photo of my painted timing
> mark. It shows that I managed to put the paint on the 16/°/ mark.
> Now, 1° isn?t a lot but I can foresee the potential of making it
> worse when I take up the lamp again.
>
> My question is this. What do I dial into the timing light to
> account for the mark being 1° out? (If I go the wrong way, I?ll be
> 2° out).
>
> Thanks,
>
> Simon
>
>
>
> _______________________________________________
>
> Support Team.Nethttp://www.team.net/donate.html
>
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>
> Archive:http://www.team.net/pipermail/healeys
> http://autox.team.net/archive
>
>
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>
>
> Unsubscribe/Manage:http://autox.team.net/mailman/options/healeys/frogeye@porterscustom.com
>
> --
> Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM. 505-352-1378 My
> World go here:WWW.PORTERBIKES.COM/ <http://WWW.PORTERBIKES.COM/>
--
Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM. 505-352-1378 My World
go here: WWW.PORTERBIKES.COM/
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<p>Didn't you say your strobe showed 15? best bet is to always make
sure you don't exceed the total advance at 4500RPM 34-36 is a safe
range. the original distributors start advance at ~750 RPM, so
make sure you set initial at that low RPM not at 1000. Unless you
have degree wheeled the valve timing, which could vary by 5
degrees on either side, I'd rely on the ignition timing with a
good strobe light. Dave <br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 4/24/2019 7:50 AM,
<a class="moz-txt-link-abbreviated"
href="mailto:simon.lachlan@alexarevel.plus.com";>simon.lachlan@alexarevel.plus.com</a>
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:000201d4faa4$9d27d180$d7777480$@alexarevel.plus.com">
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<div class="WordSection1">
<p class="MsoNormal"><span style="color:windowtext">Thanks for
this.<o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-left:90.0pt;text-indent:-90.0pt;text-autospace:none"><span
style="color:windowtext">My notes tell me that Denis Welch,
the man himself, advised:- </span><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif" lang="EN-US"><o:p></o:p></span></p>
<p class="MsoList"><span lang="EN-US">?a) Static:-100
degrees ATDC on No1 when it?s inlet is fully
open.<o:p></o:p></span></p>
<p class="MsoList"><span lang="EN-US">b) Running: 12-15 degrees
BTDC @1000 rpm<o:p></o:p></span></p>
<p class="MsoBodyTextFirstIndent"><span lang="EN-US">33-38
degrees max @ max rpm (just before it starts to
pink)?<o:p></o:p></span></p>
<p class="MsoBodyTextFirstIndent"><span lang="EN-US">And, when I
bought their ?Fast Road? cam, son Jeremy
advised:-<o:p></o:p></span></p>
<p class="MsoNormal">?15° to 18° @ 1,000rpm<span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal">34° to 38° @ 4,500rpm?.<o:p></o:p></p>
<p class="MsoNormal">Most people seem to go for 15° as a start
point. Or that?s what I thought?between us are we confusing
static with stroboscopic timing?<o:p></o:p></p>
<p class="MsoNormal">Simon<o:p></o:p></p>
<p class="MsoBodyTextFirstIndent"><span
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="color:windowtext"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="color:windowtext;mso-fareast-language:EN-GB"
lang="EN-US">From:</span></b><span
style="color:windowtext;mso-fareast-language:EN-GB"
lang="EN-US"> Healeys
<a class="moz-txt-link-rfc2396E"
href="mailto:healeys-bounces@autox.team.net";><healeys-bounces@autox.team.net></a>
<b>On Behalf Of
</b>David P<br>
<b>Sent:</b> 24 April 2019 14:17<br>
<b>To:</b> <a class="moz-txt-link-abbreviated"
href="mailto:healeys@autox.team.net";>healeys@autox.team.net</a><br>
<b>Subject:</b> Re: [Healeys] Timing mark<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p>My question is why are you running it a twice the advance the
factory advises? Excellent way to introduce preignition.<span
style="mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<div>
<p class="MsoNormal">On 4/24/2019 6:21 AM, <a
href="mailto:simon.lachlan@alexarevel.plus.com";
moz-do-not-send="true">simon.lachlan@alexarevel.plus.com</a>
wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">I bought a ProRace Harmonic Balancer a
few months back and installed it whilst attending to some
other engine chores?.new oil pump, engine mounts, reverting
to SUs from Webers etc.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Soooo?.I was given sensible advice to
mark the 15° line on the balancer as the markings are
virtually invisible once the thing?s installed, let alone
spinning at +/- 1,000rpm. <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Now for the confession. The car?s not
been running brilliantly?.some hesitation, particularly
under load, from +/- 4,000 rpm. Leaving out fuel issues for
the sake of this discussion, I was thinking about the timing
again. And I know that it?s been showing 15° BTDC with my
brand new timing light. But I was still not sure so I looked
at the photo of my painted timing mark. It shows that I
managed to put the paint on the 16<i><span
style="font-family:"Cambria Math",serif">°</span></i>
mark. Now, 1° isn?t a lot but I can foresee the potential of
making it worse when I take up the lamp again. <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">My question is this. What do I dial into
the timing light to account for the mark being 1° out? (If I
go the wrong way, I?ll be 2° out).<o:p></o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Simon<o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB"><br>
<br>
<o:p></o:p></span></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Support Team.Net <a href="http://www.team.net/donate.html";
moz-do-not-send="true">http://www.team.net/donate.html</a><o:p></o:p></pre>
<pre>Suggested annual donation $12.75<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
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<pre><o:p> </o:p></pre>
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moz-do-not-send="true">Healeys@autox.team.net</a><o:p></o:p></pre>
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<pre><o:p> </o:p></pre>
</blockquote>
<pre>-- <o:p></o:p></pre>
<pre>Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM.
505-352-1378 My World go here: <a href="http://WWW.PORTERBIKES.COM/";
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<pre class="moz-signature" cols="72">--
Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM. 505-352-1378 My World
go here: <a class="moz-txt-link-abbreviated"
href="http://WWW.PORTERBIKES.COM/";>WWW.PORTERBIKES.COM/</a></pre>
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