Multi Coil Setups

[Orin]

What are you sending him Bruce?
Anything that I already posted so I don't need to repeat myself?

Orin.

> Email with an attachment on it's way
> Grumpy
> 
> 
> > Hi Orin, are these smart coils you mention used on the LS1? I have a 1998
> > LS1 and need to understand the eight coils it has better. There are four
> > wires going to each of the eight coils.
> >
> > thanks,  dave
> >
> >
> > ----- Original Message -----
> > From: Orin <orin at diy-efi.org>
> > To: <diy_efi at diy-efi.org>
> > Sent: Wednesday, June 21, 2000 11:49 PM
> > Subject: Re: Multi Coil Setups
> >
> >
> > > > Check out the smart coils used on the late GMs, they have all the
> > > > electronics in them, and just need the fire signal. Orin posted about
> > the
> > > > "operation" of them.  They have an auto shut off.
> > >
> > > Yes, I'll dig out the info again...
> > >
> > > Leaving them armed isn't safe at very low RPM.  They will fire after
> > > 1/10 second of being armed whether you tell them to fire or not.
> > >
> > > As I recall, over 2.7V on the fire input arms them, then
> > > grounding it fires them.  Ie you don't need much more than
> > > an opto-isolator and a resistor to drive them.
> > >
> > > Orin.
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