Spark latency correction

[Shannen Durphey]

Ward wrote:

> Please remember that spark advance is actuall dely, since yiu cant time
> travel backwards to start spark, its actualy delay from the prior TDC event.
> to calulate a V8 time between TDC's do 15/RPM,

I've tried to see this by routing the REF to EST and applying 5V to
bypass.  I thought that I'd see a displaced timing mark with my timing
light, but it didn't happen.  What was I missing?
Shannen