Spark Timing. How it works.
 

I came across these series of videos, and thought I'd share it with you guys. Most already understand this concept, but I think these vid's may help some get a better idea of spark timing events. https://www.youtube.com/watch?v=fqnqap0SBs0

Part 2 https://www.youtube.com/watch?v=ksLh8iuiN1E

Part 3 https://www.youtube.com/watch?v=_LJ_4uG_c7Y

Part 4 https://www.youtube.com/watch?v=P9raJ3M5xOs

thanks for sharing jj

Good info. Thank you

thanks joe ..

Hey rob. I think locking it out was popular because there really wasn't a way to get lots of advance at idle with most systems. So, guys would lock them to help their big cammed engines idle.

If I remember right you have typical msd setups ? If so, typical the largest bushing in the advance kit is an 18 Deg. So, if your running say 34 total, that would give you 16* at idle. You can get a custom 10* bushing, which would give you 24 at idle.

Or go to a programmable ignition box.

Joe , you post a lot of great information, thank you for the effort!

Keep up the research Joe... have you been playing with a timing curve for your new daytona box? Anything figured out yet?

great info, with the newer ECM units where you have complete control over timing info like this is great...with the mega squirt we run on our drag radial car we can taylor the timing wherever we want...

Very good thread and if you follow it closely it become's apparent how important tolerances aka valve train seating and cam profiles play such a big role and why efi is still only a bandage so to speak,,,,,Precise metering and timing of course but only if the tolerance level's are just as precise.... the valve seating so precise and the duration timings are are so precise ......and then there is the induction process..so little time so many variable's.