"but as compression increases doesn't the amount of spark have to increase to ignite the fuel/air mixture as well as in increasing the gap?"
ANSWER: You would have to define "amount of spark"????? What is true is that as compression increases, the VOLTAGE across the spark plug gap has to rise higher BEFORE it fires its spark (which ignites the fuel)
Then you state: with a stronger coil you can increase the gap and get more fire in your cylinder as well.
ANSWER If the gap is increased (just like if compression is raised, read the articles in my post) that likewise increases the voltage necessary for the plug to fire. YES its true some after market so called "high voltage" coils have the capacity/ability to achieve higher voltage (as may required in high compression racing engines) buttttttttt regardless of HV or stock coil, the voltage only rises high enough to fire the plug so the HV coil wont fire at any higher voltage then the stock coil. ITS JUST THAT IF COMPRESSION IS HIGH OR GAP REAL WIDE (read my articles) THE HV COIL HAS THE ABILITY TO ACHIEVE THE NECESARY HIGHER VOLTAGE...
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Today's Featured Article - Memories of an IH Super A When I was ? up to 10, I worked on my Papaw's farm in Greeneville, TN every summer. As I grew older (7), it was the thrill of my day to ride or drive on the tractor. My Papaw had a 1954 IH Super A that he bought to replace a Cub. My Papaw raised "baccer" (tobacco) and corn with the Super A, but the fondest memory was of the sawmill. He owned a small sawmill for sawing "baccer" sticks. The Super A was the powerplant. When I was old enough (7 or 8), I would get up early and be dressed to
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