I agree with my friends below n heres my two cents worth. The actual voltage at which the stock coil or an expensive high voltage after market coil fires GIVEN THE SAME CONDITIONS is the sameeeeeeeeeee...... Its just that the HV coil has the CAPACITY to ramp up to a higher voltage (to fire a wider plug gap) then a stock coil would butttttttt still it only reaches a high enough voltage to fire the plug n no more REGARDLESS of a higher voltage rating. If the gap is too wide a stock coil may not fire it like the HV coil could.
The voltage at which a plug fires (among other things) is a function of the medium (fuel and compression) in which it fires PLUS the plug gap distance i.e. why a stock coil could fire at same voltage as a HV coil.
Nowwwwww that being said, to gain much in performance you would use a high energy high voltage coil and couple it up with an electronic ignition switch (to replace points) and then run that wider plug gap you mentioned AND END UP WITH A FATTER HOTTER SPARK ACROSS A WIDER GAP (more energy discharge) to better ignite the fuel
If you only replace the coil and run a wider gap and depending on the coils specs you can indeed force it to fire at a higher voltage but at the expense of possible premature point burn up if youre exceeding the normal current.......
I agree with my buddys, use hotter plugs,,,,,,get n keep the temp up to 180 and over,,,,,,dont run the carb over rich,,,,,,,give her 2 aspirins n call us Monday at the office
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Today's Featured Article - Tractor Profile: Earthmaster - by Staff. This tractor, manufactured by the Earthmaster Farm Equipment company in Burbank, California was made for only two years. The Model C came out in 1948 and was followed by the "CN" (narrow-width model), "CNH (narrow-width high-crop model), "CH" (high-crop), "D" and the "DH" (high-crop) in 1949. The main difference between the models was tire size, tractor width and cultivating height. The "D" series were about 20 inches wider overall than the
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