I've been running a Pertronix Ignitor II in a dual-point for many years on my
289 car and it has been stone reliable. This includes track day adventures. My
331 car has a complete Pertronix Flame-Thrower distributor running the later
Pertronix Ignitor III ignition which has a built in rev limiter. As far as
dwell, the technology monitors coil current and varies the dwell for maximum
spark output across the RPM range unlike points (single or dual) which are
fixed dwell.
http://www.pertronix.com/prod/ig/ignitor3/default.aspx
When we build a race-only engine then the more exotic MSD systems are used.
The Pertronix are pretty much plug-and-play and a great choice for a mild
street engine or if you want to keep the original distributor but get better
performance.
The Ignitor II for a non-vacuum Ford dual-point is model 91284
Bugz
-----Original Message-----
From: Tigers [mailto:tigers-bounces@autox.team.net] On Behalf Of Bob Josten
Sent: Monday, August 25, 2014 12:10 PM
To: wseay
Cc: Tiger's Den
Subject: Re: [Tigers] Distributor Performance
What about installing the Pertronix setup in a dual point distributor?
Bob J.
On Mon, Aug 25, 2014 at 8:11 AM, wseay <wseay@embarqmail.com> wrote:
> The objective of the dual-point distributor is to increase dwell to
> get a larger spark. With the Pertronix you get the increased dwell
> with none of the disadvantages of the mechanical point set in the dual-point
setup.
> There is one potential advantage to the dual-point distributor that
> you might want to consider though. The dual-point distributor is set
> up to optimize performance. As such, it has no vacuum advance and,
> presumably, has a mechanical advance curve which is intended for
> maximum performance rather than the best compromise between economy
> (i.e. with vacuum advance) and performance. If you install a
> Pertronix unit you will retain the stock vacuum and mechanical advance
> which should provide the best economy/performance compromise. If you
> want the combined advantage of low maintenance from the Pertronix and
> optimal performance from the dual-point you can install a Pertronix
> unit, disconnect the vacuum advance and diddle with the mechanical advance.
>
>
> Will Seay - wseay@embarqmail.com
> ______________________________
> "I think not therefore I am not" (anon) -----Original Message-----
> From: Robert D. Hogan
> Sent: Monday, August 25, 2014 10:37 AM
> To: tigers@autox.team.net
> Subject: [Tigers] Distributor Performance
>
>
> Is there any performance advantage of a Ford dual point distributor
> over a Pertronix electronically triggered distributor. There
> certainly can't be a maintenance advantage to a dual point, so is a
> dual point's firing worth it?
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