Ignition only

Bruce Plecan nacelp at bright.net
Tue Nov 7 21:17:11 GMT 2000



> > > Aside from simplicity and reliability, is there a measureable
> > > advantage to running DIS vs. just dizzy, assuming, of course, both are
> > > ECM controlled?
> > Upside one less air gap to cross.
> Only a coil-per-plug system will give you "one air gap" per spark event.

Ooops, meant to delete off list
Bruce

> For each spark event:
>   Distributor system has a spark gap at the distributor and one at the
plug.
>   Traditional DIS has a spark gap at both plugs of any one coil pack.
> And yes, it's true that a DIS system will fire one plug if the other plug
> is open circuit - because of the capacitive path to ground thru' the coil
> pack and other plug lead.
> Peter.

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