spark timing measurement and recording

[Programmer]

SnapOn makes a digital timing meter (not timing light)--could it be adapted
for recording ? It's
by far better reading the numbers visually--than trying to map spark vs
crankshaft position vs RPM.

Lyndon.
----- Original Message -----
From: Jason R. Haines <jhaines at lingenfelter.com>
To: <diy_efi at diy-efi.org>
Sent: Thursday, March 08, 2001 8:16 AM
Subject: Re: spark timing measurement and recording


> I want to be able to record spark timing on any engine that we test on the
> engine dynamometer or on the chassis dynamometer (maybe even in vehicle so
> on the road or on the water). Most will be EFI applications (many
different
> ECMs) and some will be carb's.
>
> Also, the aftermarket ECM's can't be used for emissions certified
> applications.
>
> Jason
>
>
> > If you are going to spend that much, why not just buy an Accel DFI, or
> Speed
> > Pro,
> > or Motec, Haltronic, etc system that lets your read 02 and control
> > individual spark and fuel.
> > You can be in most of these systems for under 4K.  But then again, this
> site
> > is about DIY.
> >
> > -----Original Message-----
> > From: Jason R. Haines [mailto:jhaines at lingenfelter.com]
> > Sent: Wednesday, March 07, 2001 5:53 PM
> > To: diy_efi at diy-efi.org
> > Subject: Re: spark timing measurement and recording
> >
> >
> > > Who's WBEGO gives you spark along with A/F?......
> >
> > The ECM (Engine Control and Monitoring, http://www.ecmco.com ) model
2400
> > gives AFR, spark timing, rpm and MAP. It can record the data or output
it
> to
> > a PC. It is a great unit but costs $8000. To record rpm you just clip a
> > pickup to any spark plug wire. To get timing you need to mount a sensor
to
> > the engine to pickup up TDC.
> >
> >
> > Jason
> >
> > >
> > >
> > >
> > > > Has anyone used any equipment to actually measure and record
ignition
> > > timing
> > > > at the engine. Accurate Technologies sells a unit to do this but it
> > costs
> > > > several thousand dollars. One of the ECM wide band meters also
offers
> > this
> > > > information but it too costs several thousand dollars. I would think
> > with
> > > a
> > > > crank position sensor and a pickup on a spark plug wire that this
> would
> > > not
> > > > be that difficult to record. Any ideas on how to build such a
device?
> > > Anyone
> > > > else already make something like this but at lower cost? It would be
> > nice
> > > to
> > > > record ignition timing along with rpm and the other normally
recorded
> > > > variables in our data acquisition systems.
> > > >
> > >
> > >
> >
>
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> > >
> >
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