Quote:
Originally Posted by PascaLM
And what about a "simple" change in the ignition order of the cylinders ? Could this affect the vibration mode ?
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It was (it must ) be a question of balance of the crankshaft... when you change the "balancing" ( so to speak becasue it might not only be due to the counter weights) of the crankshaft you change the firing order... remember its the crankshaft that commands the positioning of the pistons its not the spark plugs lol... to change ignition ordering invariably you must change crankshaft ( very so in symmetric engines).