Quote:
Originally Posted by scarceller
Not correct, the DME has a 3D spark dwell table and varies spark duration per crank rev based on system voltage and RPM. the table looks like this:
I have tuned this table for different coil types in the past.
Is the blaster coil similar to the stock coil specs, that I don't know but I take your word for it. Or one could bench test it to find out the exact time it takes to fully charge and saturate the coil and various voltages. |
Actually, the spark duration is basically a function of the spark energy stored in the coil during the time the Darlington transistor output pin1 is initially not grounded, typically about 1ms on the 911 3.2.
So at 6K RPM with a spark duration of 1ms, this leaves about 2.3 ms to charge the coil for the necessary spark energy.
Once one knows the key parameters of an ignition coil, no actual in circuit testing is needed.