additional thoughts...caddy-olds and the buick

[Shannen Durphey]

gmecm at efi332.eng.ohio-state.edu wrote:
> 
> Right on the money Shannen ,Your thinking what I was thinking of doing with
> the 4 cly coil paks, the  2 crank sensors 90 deg ,ref pulses, 1 coilpak
> master, 2nd coilpak slave   ect. I would batch fire the injectors so you
> wouldn't need a cam sensor. The north star system would of course work, but
> I thought we were looking for a cheap alternative. I have also wanted to try
> 4 pickup coils 90 deg around the balancer ,each pickup feeding a 7 term HEI
> module. The HEI module would fire a coilpak. All controlled by the ECM,batch
> fire the injectors. The Ref pulses would need to be figured out. Interesting
> stuff.
> 
> Don
New thoughts.  1 module, 1 sensor, 4 coil packs.  2 packs each tied to
common power, alternate trigger between the two.  My Q is whether or
not the 4 cyl module will care if it has extra crank pulses between #1
and #1. 
Double coil thing... At one time I was working on an HEI version of
the old dual point "flamethrower" distributor.  Dual coils, flip/flop
between the 2.  Is the HEI rpm limited because the coil can't be
saturated?
Shannen
> 
> 
> 
> > -----Original Message-----
> > From: Shannen Durphey [SMTP:shannen at grolen.com]
> > Sent: Wednesday, November 10, 1999 7:58 PM
> > To:   gmecm at efi332.eng.ohio-state.edu
> > Subject:      Re: additional thoughts...caddy-olds and the buick v6
> >
> > Shannen Durphey wrote:
> >
> > > > >
> > > Thinking out loud, please correct me....
> > > You'll need to have 2 crank sensors, offset 90 degrees around
> > > balancer, and tie module ref outputs together, but keep pulse from 1st
> > > module away from module 2, and vice-versa, and you definitely don't
> > > want to run it with SFI unless you can guarantee that module for cyls
> > > 8+5, 3+2 never sends ref. pulse first.  Didn't the caddy 4.1/4.5l and
> > > the Norstar have DIS?
> > > Shannen
> >  EST line needs to be seperated also, yes?  Signal from ECM to module
> > must be split up between the pair of modules.
> > Shannen