So, today I sat down with my new, very powerful, Emgo Universal Coils (#24-71512), to figure out how to hook 'em up to my, freshly rebuilt, very powerful, '77 D engine (with stock points).
I noticed the threaded coil posts were marked with a "+" and a "-". So which post do I connect the orange wire to? Which one do I connect the brown wire to?...etc.
I looked thorugh the forum posts and found the consensus to be that it doesn't matter, just make sure whatever coil has the orange wire should have its spark plug wire go to the left cylinder, etc.
I did a little more internet search out of curiosity and found that, while the coils and points don't care about polarity, the spark plugs might. Someone wrote that, given a choice, electrons prefer to go from hot surfaces to cold, meaning that less energy is required to create a spark if the electrons are "guided" in that direction. Since the center electrode of a spark plug is hotter than its base, it would seem that in a negative ground system, one would get a more reliable spark if the negative side of the coil goes to the points
.
No, I am not an expert. Yes, this is food for thought. No, don't ask me any questions about this foolishness. Yes, I do appreciate snappy comebacks....
I noticed the threaded coil posts were marked with a "+" and a "-". So which post do I connect the orange wire to? Which one do I connect the brown wire to?...etc.
I looked thorugh the forum posts and found the consensus to be that it doesn't matter, just make sure whatever coil has the orange wire should have its spark plug wire go to the left cylinder, etc.
I did a little more internet search out of curiosity and found that, while the coils and points don't care about polarity, the spark plugs might. Someone wrote that, given a choice, electrons prefer to go from hot surfaces to cold, meaning that less energy is required to create a spark if the electrons are "guided" in that direction. Since the center electrode of a spark plug is hotter than its base, it would seem that in a negative ground system, one would get a more reliable spark if the negative side of the coil goes to the points
.No, I am not an expert. Yes, this is food for thought. No, don't ask me any questions about this foolishness. Yes, I do appreciate snappy comebacks....
