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High Output
John, in the 70's they went to high output ignition so that they could jump the wider gapped plugs. The wider gapped plugs were required because to try and meet government mandated mpg requirements. At very lean mixtures at idle they had a lot of miss firing at idle/low speeds because when the plug flashed there was good possibility that no fuel molecules were present in the plug gap area so that whole cycle was lost through miss fire.
These trick plugs may have multiple ground electrodes but still only one center electrode/source for the spark. They make one spark per cycle just like any good quality existing plug. As long as the fuel charge is ignited at the right time there is no gain in HP or MPG with multiple grounding plugs.
They have/had to go to far better ignition systems in racing to accommodate much higher compression ratio's (causing more resistance across plug gap) and the much higher RPM's (less time for primary ignition to build it's magnetic field)
I truly believe that if you did HP tests and MPG tests on a good running engine the results would be the same between standard plugs and these new age high foliating multiple ground plugs. The only gain MAY! be that at high mileage the ground electrode wear would be less on the multiple ground plug because it has more material to wear away.
Ken/Sooke
John, in the 70's they went to high output ignition so that they could jump the wider gapped plugs. The wider gapped plugs were required because to try and meet government mandated mpg requirements. At very lean mixtures at idle they had a lot of miss firing at idle/low speeds because when the plug flashed there was good possibility that no fuel molecules were present in the plug gap area so that whole cycle was lost through miss fire.
These trick plugs may have multiple ground electrodes but still only one center electrode/source for the spark. They make one spark per cycle just like any good quality existing plug. As long as the fuel charge is ignited at the right time there is no gain in HP or MPG with multiple grounding plugs.
They have/had to go to far better ignition systems in racing to accommodate much higher compression ratio's (causing more resistance across plug gap) and the much higher RPM's (less time for primary ignition to build it's magnetic field)
I truly believe that if you did HP tests and MPG tests on a good running engine the results would be the same between standard plugs and these new age high foliating multiple ground plugs. The only gain MAY! be that at high mileage the ground electrode wear would be less on the multiple ground plug because it has more material to wear away.
Ken/Sooke
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