spark timing measurement and recording

[Walter Sherwin]

Who's WBEGO gives you spark along with A/F?......



> 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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