DIS for GMECM

[Len Sabatine]

    John , that info would be great , Like to see if N*Dis can be grafted 
on to LT1/4 . Going to be doing some Dyno Testing soon , may prove interesting.
    Surely , Anything you can retrieve would offer insight to the list 
members . Yes, the real estate position of the Coil package can be a 
variable versus harness
    and plug wire routing in a specific setup, then , + code rework ,  not 
much can't be worked around if the will is there to get it done. I have an 
Olds Aurora
    DIS waiting for a new Home, at least worth a try ! Thanks + .
    Len

>I do have pics. I am having trouble finding them, but when I do I will put 
>them up. I am thinking about just buying the parts for some experimenting 
>anyway. It's really slick looking. The N* DIS is mounted vertically on the 
>front of the engine/cylinder head, on the drivers side. I'll find those 
>pics here somewhere.
>
>         John
>
> >Date: Wed, 06 Dec 2000 09:39:32 -0500
> >From: Len Sabatine <sabatine at epix.net>
> >Subject: Re: DIS for GMECM>
> >
> >   Hey John , have heard of DIS on LT Marine  Apps , have not seen though,
> >got any Pics ?
>  At any rate, the Nstar style Pkg would
> >indeed eliminate
> >   the monkey motion for sure. While still lots of Plug wire , multiplying
> >spark and dividing the load X 8 ,  Can't be wrong by any stretch. Yes,
> >crank reluctor with
> >   Lo-Hi Res sensor positions and "usual" module sense scenario does lend
> >itself to wider usage on other controllers that process like signals.
> >Marine Apps ,
> >   not needing to do FTP certifications, can be  OEMs  spring board
> >development arena for Wana Be Vehicle programs to come.
> >    Len
> >
> >
> >>Exactly!!  Makes me think back to the LT1 Optispark distributor.  All the
> >>hoopla about 1 degree resolution with the 360 deg optical sensor, and then
> >>go and hook it all together with a timing chain and a little splined drive
> >>off the front of the camshaft!  Many folks are unaware of the fact that
> >>when the LT1's were used in the Mastercraft ski boats, they used the
> >>Northstar DIS, NOT the Optispark. The Nstar reluctor wheel mounts on the
> >>back of the harmonic balancer, and a new timing chain cover is used with
> >>the 2 crank sensor mounting saddles cast right into the cover. It's a neat
> >>little package! The 2 crank sensors feed directly into the full-function
> >>DIS module, it decodes and processes the signals, and then you have the
> >>usual connection to the ECM (REF HI, REF LO, BYPASS, and EST. In the
> >>marine application they used the MEFI-2 controller, but hey, it COULD have
> >>been a 730/727 controller.
> >>
> >>         John
> >>
> >>
> >> >Date: Tue, 05 Dec 2000 18:46:42 -0500
> >> >From: Len Sabatine <sabatine at epix.net>
> >> >Subject: Re: DIS for GMECM
> >> >
> >> >
> >> >Think , elimination of distrib gear , rotor ,cap , carbon brush , air
> >> gaps,  slop in the timing sys , ionization ,torsional vibes traveling thru
> >cam,
> >> > oil pump disturbances , coil and plug wires and their routing. All
> >> the >monkey motion and associated spark delivery problems , GONE,
> >> especially with
> >> > CNP ignition sys. Spark scatter and inductive X fire tendencies ,
> >> GONE.  " Nearly" perfect spark delivery and repeatability is now 
> possible .
> >> > Add to  that , Coil drivers are on each coil , not on PCM Motherboard.
> >> A very high degree of "recovered loss" in Ignition efficiency has come to
> >> pass. The
> >> > ms latency ,spark propagation time has also been reduced substantially.
> >> > Hope I've gotten the idea across.
> >> >     Len
> >> >
>
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