Odd fire Buick/Jeep V6 question

[Mike Dillon]

>

Hi Ludis,

    What I was thinking is he could just run a V8 Distributor, and tell the ECU it was
a V8, then I think the only semi interesting thing is what to do with the extra 2 ignition
pulses, screw two plugs in to a bracket somewhere and hook them up so the extra
sparks have somewhere to go, other than though the roter or making carbon traces
in the cap ? , then I think the fuel,  advance  etc. table  could be tuned as usual, without
getting  too fancy. Any down sides ?

Mike D.

> From: Ludis Langens <ludis at cruzers.com>
> Subject: Re: Odd fire Buick/Jeep V6 question
>
> Mike Dillon wrote:
> >
> >     Thats what I pretty much thought, this was a question posted to one
> > of the jeep list I am on. It might not be to bad to build a black box between
> > the Distrubutor and the ECU to condition the pulses between the two but
> > it would likely be more trouble than it is worth.
>
> Some ECM logic would need the original odd-fire signal.  Other parts
> would like a modified signal.
>
> I think at minimum, you'd need two odd-fire signals, skewed by probably
> 90 degrees - and software changes in the ECM to do RPM calculations properly.
>
> Considering that even fire 3.8 long blocks are easy to get, I see no
> reason to hack an ECM to operate an odd-fire 3.8
>
> - --
> Ludis Langens                               ludis (at) cruzers (dot) com
> Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
>



----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org