[Spridgets] Pertronix vs. Points Vice 123 System

rrengineer @dslextreme.com rrengineer at dslextreme.com
Tue Mar 17 21:14:43 MST 2009


Well, Jeff at Advanced Distributors must know something.  If you have filled
out one of his order sheets you would know he asks all kinds of questions
about the application of your distributor such as CR, head work, cam
profile, cylinder pressures, exhaust system type, etc, etc.  As extensive as
the questionaire is, it's probably more than adequate for any street
application that most of us need.  If you are into racing, go to David Anton
at APT.  I have seen the distributor machine at his shop.  David tends to
lean his research on racing anyway.  Both of my cars are using distributors
(Sprite with Pertronix) rebuilt by Jeff at Advanced Distributors.  In fact,
as recommended by Jeff I let him replace the BN2 weight and spring mechanism
with a 25D mechanism in the BN2 distributor to upgrade it for better advance
curve decay on decelleration.  The spring and weight mechanism of the 25D
shaft have a better leverage of weights and springs to bring the weights
back toward the shaft to briong the curve down quicker.  He does this
conversion to many of the older Lucas distributors for this reason.  I don't
know why, but many early distributors will hold the advance curve for too
long after you have dropped the rpm.  Maybe one of the better informed
electrical gurus on the list know the reason for this
Mike MacLean
60 Sprite
56 BN2


On Tue, Mar 17, 2009 at 1:20 PM, <WeslakeMonza1330 at aol.com> wrote:

> I don't know about Advanced Distributers but do now that APT in California
> and Aldon in the UK have extensive dyno testing to back up their curves.
>
> If there was a 123 distributer that had curves A B and C from David Anton
>  at
> APT I'd be interested in a unit.
>
> Weslake-Monza 1330


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