[Shotimes] Re: 2 Cylinders Fire at once? How our coil pack works...

[Jim and Debbie Leyden]

No, that is incorrect,  The spark always flows in the same direction but
with opposite polarity from the opposite ends of the coil pack.  On the
shared coil one plug is fired positive polarity all the time and one plug is
fired negative polarity.  The plugs only really need platinum on one
electrode bit it would be on the center electrode from one end of the coil
and on the side electrode for the other end of the coil.

Jim


-----Original Message-----
From: shotimes-admin@autox.team.net
[mailto:shotimes-admin@autox.team.net]On Behalf Of James F. Ryan III
Sent: Saturday, April 03, 2004 9:55 AM
To: Paul Nimz; Frank Costa; shotimes@autox.team.net
Subject: Re: [Shotimes] Re: 2 Cylinders Fire at once? How our coil pack
works...


I wrote:

> I am under the impression that we need the PP because current flows
> thruu the plug in both directions because of the way the coils are fired.

You wrote:

> They don't do that.

Then you wrote:

> And yes the wasted spark is going in the opposite way of the normal
> spark,. from block to plug.

Make up your mind.  During the power stroke the current flows from center
electrode to side electrode, and during the exhaust stroke the current flows
from side electrode to center electrode.  CORRECT?  Hence the need for
platinum on both electrodes.
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