spark timing measurement and recording

[Jason R. Haines]

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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