This video is a follow up to part 9 so it will make more sense if you watch part 9 first.
In this video I show that the GM DELCO EST marine ignition module has a special cranking timing curve, an ignition timing curve for idle, and a timing curve for total timing under way.
I was using a V6 engine for this video. In the future I will check the cranking timing on a V8 and 4 cylinder to confirm the same operation on those engines.
EDIT: In the video I was thinking of a v8 engine when I said the total timing should be 30°. A Vortec 4.3 V6 engine actually has a total timing of 25° so the initial timing would be 13 degrees less or 12 degrees. While this is better than 17 degrees initial I still would not recommend a car/truck module since the curve is not designed for smooth RPM transitions.
8 ноя 2023