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Re: [Fot] Ignition coil for 6 cylinder with points (racing)

To: fubog1 <fubog1@aol.com>
Subject: Re: [Fot] Ignition coil for 6 cylinder with points (racing)
From: Jason Sukey via Fot <fot@autox.team.net>
Date: Wed, 11 Sep 2019 09:37:40 -0400
Cc: FOT list <fot@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
References: <1991967453.3742544.1568204398504.ref@mail.yahoo.com> <1991967453.3742544.1568204398504@mail.yahoo.com>
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Thanks for all the ignition advice over the past few days.  No more fooling
around, I just ordered a 123Tune USB distributor.  Yet one more racing
problem solved by throwing $ at it. :)

Jason

On Wed, Sep 11, 2019 at 8:20 AM fubog1 via Fot <fot@autox.team.net> wrote:

> I agree, a lot of electrons going through there, and the red plastic
> rubbing block on the modern points has its limit.
> Points are fine on a 4-cylinder engine, if all is kept in order, but a
> 6-cylinder at those revs is pretty much at the limit; it has to do with
> coil saturation time, the amount of time that the points are closed.
> There's a limit to how fast the points can be made to open and close, just
> like a cam/valve action, and the modern optical & magnetic units are
> instantaneous and allow max saturation time for a good spark.
> A 6-cylinder @ those revs would likely benefit from a modern unit.
> Glen
>
>
> -----Original Message-----
> From: Bill Tobin via Fot <fot@autox.team.net>
> To: fot <fot@autox.team.net>
> Sent: Mon, Sep 9, 2019 1:18 pm
> Subject: Re: [Fot] Ignition coil for 6 cylinder with points (racing)
>
> Jason, sounds like you have too much current going through the points.
> Maybe try an external ballast resistor. (Ask me how I learned this!).
> Why not go Pertronix or other pointless distributors? KISS. But always
> carry a spare!
> Cheers, Bill
> On 9/9/2019 11:07 AM, Jason Sukey via Fot wrote:
>
> Had a wonderful time at the Glen, still chasing some gremlins, but getting
> closer!
>
> I've been struggling with points on my GT6, before I throw them away and
> buy a 123tune dizzy, I'd like to survey the other 6 cylinder guys to see if
> anyone has found a good setup that works with points.
>
> My engine is about 12.5:1 compression, typically shifting just under 7000
> rpm, but will rev to 7300 rpm depending on the situation.?? Lucas 25D6
> dizzy built by Advanced Distributors.
> NGK BP8ES plugs, .028" gap.
> Points are the ones with the red plastic that come in the green "lucas"
> box, gapped to .015"
>
> The problem:?? I keep melting the plastic block on the points causing the
> point gap to close up to zero.?? At the suggestion of Jeff at Advanced
> Distributors, I replaced the 1.5 ohm coil with a 3.0 ohm coil (no ballast
> resistor).?? With the 3.0 ohm coil, the points??seem to last, but the car
> won't rev past 5000 rpm.
>
> With the hotter 1.5 ohm coil, the car runs really strong, and as long as I
> don't let the engine idle for very long, the points will last a couple
> sessions.?? I've been thru three sets of points, tried two different
> condensers all with similar results.
>
> The tow crew at Watkins Glen is very efficient, I pulled off behind the
> armco on the pace lap and was still able to watch all but the first two
> laps of the all Triumph feature from the stands!
>
> Jason Sukey
>
>
> _______________________________________________fot@autox.team.net
> http://www.fot-racing.com
>
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>
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>
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>
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>
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Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Thanks for all the ignition advice over the past few days.=
=C2=A0 No more fooling around, I just ordered a 123Tune USB distributor.=C2=
=A0 Yet one more racing problem solved by throwing $ at it. :)<div><br></di=
v><div>Jason</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" cla=
ss=3D"gmail_attr">On Wed, Sep 11, 2019 at 8:20 AM fubog1 via Fot &lt;<a hre=
f=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a>&gt; wrote:<br></div>=
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex">
<div style=3D"color:black;font:10pt Arial,Helvetica,sans-serif">
<div> <font size=3D"2">I agree, a lot of electrons going through there, and=
 the red plastic rubbing block on the modern points has its limit.</font></=
div>

<div><font size=3D"2">Points are fine on a 4-cylinder engine, if all is kep=
t in order, but a 6-cylinder at those revs is pretty much at the limit; it =
has to do with coil saturation time, the amount of time that the points are=
 closed.</font></div>

<div><font size=3D"2">There&#39;s a limit to how fast the points can be mad=
e to open and close, just like a cam/valve action, and the modern optical &=
amp; magnetic units are instantaneous and allow max saturation time for a g=
ood spark.</font></div>

<div><font size=3D"2">A 6-cylinder @ those revs would likely benefit from a=
 modern unit.</font></div>

<div><font size=3D"2">Glen</font><br>
</div>

<div> <br>
</div>

<div> <br>
</div>

<div style=3D"font-family:arial,helvetica;font-size:10pt;color:black">-----=
Original Message-----<br>
From: Bill Tobin via Fot &lt;<a href=3D"mailto:fot@autox.team.net"; target=
=3D"_blank">fot@autox.team.net</a>&gt;<br>
To: fot &lt;<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@aut=
ox.team.net</a>&gt;<br>
Sent: Mon, Sep 9, 2019 1:18 pm<br>
Subject: Re: [Fot] Ignition coil for 6 cylinder with points (racing)<br>
<br>

<div id=3D"gmail-m_-6763114652235146566yiv0240578459">
<div>
   =20
<div>Jason, sounds like you have too much current going through the
      points. Maybe try an external ballast resistor. (Ask me how I
      learned this!).</div>

   =20
<div>Why not go Pertronix or other pointless distributors? KISS. But
      always carry a spare!<br clear=3D"none">
    </div>

   =20
<div>Cheers, Bill<br clear=3D"none">
    </div>

   =20
<div class=3D"gmail-m_-6763114652235146566yiv0240578459yqt6281591226" id=3D=
"gmail-m_-6763114652235146566yiv0240578459yqtfd86075">
<div class=3D"gmail-m_-6763114652235146566yiv0240578459moz-cite-prefix">On =
9/9/2019 11:07 AM, Jason Sukey via
      Fot wrote:<br clear=3D"none">
    </div>

    <blockquote type=3D"cite">
      </blockquote></div>
</div>

<div class=3D"gmail-m_-6763114652235146566yiv0240578459yqt6281591226" id=3D=
"gmail-m_-6763114652235146566yiv0240578459yqtfd75349"></div>

<div>
<div class=3D"gmail-m_-6763114652235146566yiv0240578459yqt6281591226" id=3D=
"gmail-m_-6763114652235146566yiv0240578459yqtfd63555">
<div dir=3D"ltr">Had a wonderful time at the Glen, still chasing
        some gremlins, but getting closer!
       =20
<div><br clear=3D"none">
        </div>

       =20
<div>I&#39;ve been struggling with points on my GT6, before I throw
          them away and buy a 123tune dizzy, I&#39;d like to survey the
          other 6 cylinder guys to see if anyone has found a good setup
          that works with points.</div>

       =20
<div><br clear=3D"none">
        </div>

       =20
<div>My engine is about 12.5:1 compression, typically shifting
          just under 7000 rpm, but will rev to 7300 rpm depending on the
          situation.?? Lucas 25D6 dizzy built by Advanced Distributors.</di=
v>

       =20
<div>NGK BP8ES plugs, .028&quot; gap.</div>

       =20
<div>Points are the ones with the red plastic that come in the
          green &quot;lucas&quot; box, gapped to .015&quot;</div>

       =20
<div><br clear=3D"none">
        </div>

       =20
<div>The problem:?? I keep melting the plastic block on the
          points causing the point gap to close up to zero.?? At the
          suggestion of Jeff at Advanced Distributors, I replaced the
          1.5 ohm coil with a 3.0 ohm coil (no ballast resistor).?? With
          the 3.0 ohm coil, the points??seem to last, but the car won&#39;t
          rev past 5000 rpm.</div>

       =20
<div><br clear=3D"none">
        </div>

       =20
<div>With the hotter 1.5 ohm coil, the car runs really strong,
          and as long as I don&#39;t let the engine idle for very long, the
          points will last a couple sessions.?? I&#39;ve been thru three se=
ts
          of points, tried two different condensers all with similar
          results.</div>

       =20
<div><br clear=3D"none">
        </div>

       =20
<div>The tow crew at Watkins Glen is very efficient, I pulled
          off behind the armco on the pace lap and was still able to
          watch all but the first two laps of the all Triumph feature
          from the stands!</div>

       =20
<div><br clear=3D"none">
        </div>

       =20
<div>Jason Sukey</div>

       =20
<div><br clear=3D"none">
        </div>

      </div>

      <br clear=3D"none">
      <fieldset class=3D"gmail-m_-6763114652235146566yiv0240578459mimeAttac=
hmentHeader"></fieldset>
      </div>
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</div>
</pre>
<div class=3D"gmail-m_-6763114652235146566yiv0240578459yqt6281591226" id=3D=
"gmail-m_-6763114652235146566yiv0240578459yqtfd47683">
   =20
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</div>

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