Actually the distributor "set sync" is not related to ignition timing at
all - instead it refers to the syncing of the fuel injector firing with the
intake valve opening event for each cylinder. Hence the term SMPI -
Sequential Multi Port Injection.
All ignition timing (base + advance) is done in the computer using the
crankshaft sensor to reference crankshaft degrees. It looks for its mark,
waits the appropriate time, then fires the coil. The only time the dist
even comes into the picture is at startup for determining when the crank is
on the firing stroke.
Hope this helps,
Shane
Mark Kuzia wrote:
> It is a setting for base timing done through a DRB scanner (dealership,
> unless you want to spend $1200 for one.)
>
> Mark Kuzia
> flyboy01@mediaone.net
> http://people.mw.mediaone.net/flyboy01/home.html
> 1995 Dakota 13.79 @ 102.45 mph
> ~360ci, 5-spd, 4.11 LS (8 3/4 [3.90 SG] coming soon)
> 1994 Dakota 15.36 @ 91.56 mph
> ~318ci, 5-spd, 3.90 LS (bone stock, no mods)
>
> ----- Original Message -----
> From: "Phil Jenkins" <bugnik@yahoo.com>
> To: <dakota-truck@buffnet.net>
> Sent: Monday, July 09, 2001 7:32 PM
> Subject: Re: DML: Re: Re: RE: "Advanced" question for the experts
>
> >
> > --- Mark Kuzia <flyboy01@mediaone.net> wrote:
> > > Have you done a "set sync" on the distributor yet?
> > > My Dak was a little
> > > doggish in the midrange, until I advance it about 4
> > > degrees. Before it was 8
> > > degrees retarded.
> > >
> >
> > Mark,
> >
> > What is a "set sync" if you don't mind me asking.
> >
> > =====
> > Phil
> >
> > __________________________________________________
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> > http://personal.mail.yahoo.com/
-- '96 IndyRam-HisIndy-MPI TB Pulleys RTcam MPComp HVoilpump DynaGearDoubleRoller WindageTray CompTAs '96 IndyRam-HerIndy-numbered(#142)"Track Truck" '74 Triple-Black Dodge Challenger Rallye 360 EFI R&D vehicle '93 Dakota CC 318 - soon to be mine 8)
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