Ignition only

[J. Creech]

Correct me if I'm wrong here, but the answer to that is this: Each end of
the output of the coil is connected (via plugwires) to the center electrode
of the plugs for each pair of cylinders. The Engine and ground electrode are
merely a mass of metal "between" the two center electrodes. Merely a pathway
for the current to travel. I might add my $0.005(half sense) here. If the
combustion end has a high potential, and the waste end has a low potential
across the gaps, wouldn't the Amperage be inversely proportional in it's
respective cylinder, to the other one? I'm just a Refrigeration
Tech/Industrial Electrician here, not an EE. Please, if I'm incorrect,
correct me and enlighten us all. Thanks

Scott Creech


----- Original Message -----
From: <Rodney_L_Wiggins at keybank.com>
To: <diy_efi at diy-efi.org>
Sent: Friday, November 10, 2000 7:48 AM
Subject: Re: Ignition only


>
>
> I'm having trouble understanding the concept of firing the second plug
> backwards.
> After the spark jumps the gap on the first plug, isn't the "path of least
> resistance"
> going to be head-block-chassis instead of trying to jump the airgap of the
> second
> plug?? (compressed or otherwise). I'm probably missing something basic
here.
>
> TIA
> Rod
> 944 turbo (+NOS and big Turbo)
> only 7000 RPM so 1 coil 1msd. (sufficient??)
>
>
>
>
> >0ne difference I didn't see mentioned is that waste spark systems
> >fire one plug "backwards". (Normally the hot center electrode is
> >negative, since it's electrons being emitted that actually start
> >things off, as in vaccum tubes.) This probably means that the plug
> >gap in those cylinders cannot be as large as in a "forward"
> >cylinder, but I'm not sure if this is a meaningful difference or
> >not.
>
>
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