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For my Ford 1500-powered Morgan I will use an Advanced Distributors =
rebuild and continue to use points (points bounce is a non-issue with =
CDI because it will trigger on the first opening of the points but =
ignore subsequent openings when they bounce.), but will use a slightly =
modified CD ignition made by VJ, probably manufactured in the mid-1970s =
(V.J. Products Model 25B J-15 CDI). These are about $40 on eBay, plus =
shipping. A guy in the Morgan community has tested Pertronix triggering =
modules and has also tested various CDI=E2=80=99s including Bosch, MSD, =
Tiger, Delta Mark 10, Speedatron, Permatune, and VJ among others and =
found surprising weaknesses in some of the big name units. The =
inexpensive VJ CDI tested better than any of the others besides the =
original Hyland ignition unit, on which his father held the patents. He =
found that Pertronix is better than points for getting an engine to fire =
at low cranking rpm but spark energy is significantly less than points =
at high rpm due to a voltage loss, whereas using points with a CDI can =
produce 5 or 6 times the energy of the coil even at low battery voltage. =
MSD=E2=80=99s CDI does not do well when voltage drops much below 12 =
volts, which could be an issue for total-loss electrical systems. When =
he tested an older MSD unit he found that the advertised voltage, energy =
storage, duration, etc. did not stack up with his test results. He =
found the spark energy weak, presumably a negative effect from putting =
emphasis on multiple sparks.
He=E2=80=99s reluctant for me to quote him extensively but there is a =
little bit more info on his website (including him hawking his own CDI =
design): http://www.capacitordischargeignition.com =
<http://www.capacitordischargeignition.com/> . Anyone wanting details =
of his testing of other brands can contact him (his email address is on =
his website).=20
Duncan Charlton
Elgin, Texas USA
> On Jul 10, 2016, at 1:14 AM, Tony Drews <tony@tonydrews.com> wrote:
>=20
> For my TR-4, I'm pretty sure I used Jeff at Advanced Distributors
> http://advanceddistributors.mybisi.com/products/distributors
>=20
> After discussion with him, he built a Lucas distributor package that =
used points and a Bosch blue coil. He's very specific about the parts =
used, and while the spark isn't as accurate as the crankfire setup I =
replaced, I'm extremely happy with it. Got a spare points plate so it's =
a quick swap if I have an issue. Runs to 7k rpm just fine (although I =
generally shift sooner than that).
>=20
> Regards, Tony Drews
>=20
> At 09:57 PM 7/7/2016, Joe Guinan wrote:
>> Content-Type: multipart/alternative;
>> boundary=3D"----=3D_NextPart_000_0077_01D1D89A.984F1DA0"
>> Content-Language: en-us
>>=20
>> Back in 2005 or so we had a long discussion of distributor problems; =
broken mechanical advance tabs, junk condensers, and expensive =
replacement parts on the Mallory Dual Point units, worn out parts on =
Lucas units that therefore became ammunition in catapult battles, short =
life spans and improper phasing for the Pertronix Ignitors, misfires on =
the MSD units from low battery charging, etc. I think the =C2=93123 =
Ignition=C2=94 was just being introduced around that time.
>>=20
>> So a decade or so later, what have we learned? What=C2=92s working =
well, and what have you given up on? I=C2=92m needing to decide which =
way to go on my Spitfire. I have a couple Mallory DP=C2=92s lying about =
and several different Lucas units I could send off for refurbishing. =
I=C2=92ve looked at the Pertronix with their rev limiter box, and it =
seems intriguing. I=C2=92ve not heard much about the Pertronix or the =
123 systems in racing use. Knowing what you now know =C2=96 what would =
you recommend and what would you steer clear of?
>>=20
>> The Spitfire will have an 1147 this season, and a 1296 is to be built =
this next winter. Both will run Kastner A6 cam grinds that I just got =
back from Ted at TSI. I=C2=92d look at 7000 rpm as a limit for now. I=C2=92=
m almost completely inexperienced in regards to working on ignition =
systems, so I=C2=92d like something with a shorter learning curve and a =
good reputation for reliability.
>>=20
>> Joe Guinan
>> Fremont, Nebraska
>> _______________________________________________
>> fot@autox.team.net
>>=20
>> http://www.fot-racing.com
>>=20
>> Donate: http://www.team.net/donate.html
>> Archive: http://www.team.net/archive
>> Forums: http://www.team.net/forums
>> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/tony@tonydrews.com
>=20
>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/duncan.charlton54@gmail.com
>=20
>=20
--Apple-Mail=_27E56721-2B3B-42EE-9F7F-88CE29EDED18
Content-Transfer-Encoding: quoted-printable
charset=utf-8
<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">For my Ford 1500-powered Morgan I will use an Advanced =
Distributors rebuild and continue to use points (points bounce is a =
non-issue with CDI because it will trigger on the first opening of the =
points but ignore subsequent openings when they bounce.), but will use a =
slightly modified CD ignition made by VJ, probably manufactured in the =
mid-1970s (<span style=3D"color: rgb(51, 51, 51); background-color: =
rgb(255, 255, 255);" class=3D"">V.J. Products Model 25B J-15 =
CDI</span>). These are about $40 on eBay, plus shipping. A =
guy in the Morgan community has tested Pertronix triggering modules and =
has also tested various CDI=E2=80=99s including Bosch, MSD, Tiger, Delta =
Mark 10, Speedatron, Permatune, and VJ among others and found surprising =
weaknesses in some of the big name units. The inexpensive VJ CDI =
tested better than any of the others besides the original Hyland =
ignition unit, on which his father held the patents. He found that =
Pertronix is better than points for getting an engine to fire at low =
cranking rpm but spark energy is significantly less than points at high =
rpm due to a voltage loss, whereas using points with a CDI can produce 5 =
or 6 times the energy of the coil even at low battery voltage. =
MSD=E2=80=99s CDI does not do well when voltage drops much below =
12 volts, which could be an issue for total-loss electrical systems. =
When he tested an older MSD unit he found that the advertised =
voltage, energy storage, duration, etc. did not stack up with his test =
results. He found the spark energy weak, presumably a negative =
effect from putting emphasis on multiple sparks.<div class=3D""><br =
class=3D""></div><div class=3D"">He=E2=80=99s reluctant for me to quote =
him extensively but there is a little bit more info on his website =
(including him hawking his own CDI design): <a =
href=3D"http://www.capacitordischargeignition.com/"; =
class=3D"">http://www.capacitordischargeignition.com</a> . =
Anyone wanting details of his testing of other brands can contact =
him (his email address is on his website). <div class=3D""><br =
class=3D""><div class=3D""><div class=3D"">Duncan Charlton</div><div =
class=3D"">Elgin, Texas USA</div></div></div></div><div class=3D""><div =
class=3D""><br class=3D""></div><br class=3D"Apple-interchange-newline">
</div>
<br class=3D""><div style=3D""><blockquote type=3D"cite" class=3D""><div =
class=3D"">On Jul 10, 2016, at 1:14 AM, Tony Drews <<a =
href=3D"mailto:tony@tonydrews.com"; class=3D"">tony@tonydrews.com</a>> =
wrote:</div><br class=3D"Apple-interchange-newline"><div class=3D""><div =
class=3D"">For my TR-4, I'm pretty sure I used Jeff at Advanced =
Distributors<br class=3D""><a =
href=3D"http://advanceddistributors.mybisi.com/products/distributors"; =
class=3D"">http://advanceddistributors.mybisi.com/products/distributors</a=
><br class=3D""><br class=3D"">After discussion with him, he built a =
Lucas distributor package that used points and a Bosch blue coil. =
He's very specific about the parts used, and while the spark isn't =
as accurate as the crankfire setup I replaced, I'm extremely happy with =
it. Got a spare points plate so it's a quick swap if I have an =
issue. Runs to 7k rpm just fine (although I generally shift sooner =
than that).<br class=3D""><br class=3D"">Regards, Tony Drews<br =
class=3D""><br class=3D"">At 09:57 PM 7/7/2016, Joe Guinan wrote:<br =
class=3D""><blockquote type=3D"cite" class=3D"">Content-Type: =
multipart/alternative;<br class=3D""> =
boundary=3D"----=3D_NextPart_000=
_0077_01D1D89A.984F1DA0"<br class=3D"">Content-Language: en-us<br =
class=3D""><br class=3D"">Back in 2005 or so we had a long discussion of =
distributor problems; broken mechanical advance tabs, junk condensers, =
and expensive replacement parts on the Mallory Dual Point units, worn =
out parts on Lucas units that therefore became ammunition in catapult =
battles, short life spans and improper phasing for the Pertronix =
Ignitors, misfires on the MSD units from low battery charging, etc. I =
think the =C2=93123 Ignition=C2=94 was just being introduced around that =
time.<br class=3D""><br class=3D"">So a decade or so later, what have we =
learned? What=C2=92s working well, and what have you given up on? I=C2=92m=
needing to decide which way to go on my Spitfire. I have a couple =
Mallory DP=C2=92s lying about and several different Lucas units I could =
send off for refurbishing. I=C2=92ve looked at the Pertronix with their =
rev limiter box, and it seems intriguing. I=C2=92ve not heard much about =
the Pertronix or the 123 systems in racing use. Knowing what you =
now know =C2=96 what would you recommend and what would you steer clear =
of?<br class=3D""><br class=3D"">The Spitfire will have an 1147 this =
season, and a 1296 is to be built this next winter. Both will run =
Kastner A6 cam grinds that I just got back from Ted at TSI. I=C2=92d =
look at 7000 rpm as a limit for now. I=C2=92m almost completely =
inexperienced in regards to working on ignition systems, so I=C2=92d =
like something with a shorter learning curve and a good reputation for =
reliability.<br class=3D""><br class=3D"">Joe Guinan<br =
class=3D"">Fremont, Nebraska<br =
class=3D"">_______________________________________________<br =
class=3D"">fot@autox.team.net<br class=3D""><br =
class=3D"">http://www.fot-racing.com<br class=3D""><br class=3D"">Donate: =
http://www.team.net/forums<br class=3D"">Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/tony@tonydrews.com<br =
class=3D""></blockquote><br class=3D""><br =
class=3D"">_______________________________________________<br =
class=3D"">fot@autox.team.net<br class=3D""><br =
class=3D"">http://www.fot-racing.com<br class=3D""><br class=3D"">Donate: =
http://www.team.net/forums<br class=3D"">Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/duncan.charlton54@gmail.com<br =
class=3D""><br class=3D""><br =
class=3D""></div></div></blockquote></div><br class=3D""></body></html>=
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http://www.fot-racing.com
Archive: http://www.team.net/archive
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