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Spark Plug >>>
Posted: Thu Jul 05, 2012 5:26 am
by 1911tex
My CA95 currently has a NGK D6HA; others on here suggest D8HA; the shop manual suggests C10H............................what do ya'll suggest?
Posted: Thu Jul 05, 2012 6:11 am
by Puzzleparadise
Posted: Fri Jul 06, 2012 8:36 am
by kartgreen
With NGK spark plugs the lower the number the hotter the heat range . D8HA is the replacement spark plug . If the air/fuel ratio is a little rich or the motor is using a little oil (past the rings or valve guides ) a hotter heat range plug may be suitable . D6HA's fit but may be too hot and not color the porcelin a light tan /brown. If you've run the engine and the plugs are white you need the change plugs to a colder heat range .
Posted: Fri Jul 06, 2012 11:41 am
by Jetblackchemist
I failed to mention in the other linked post; that 8 is better if you live in the city with a lot of stop and go traffic as it disperses heat faster, in turn cooling the head quicker, since most of the time you're just sitting in traffic. If you're only in stop and go traffic for little bit to go riding; more in the country and back roads, or already live away from heavy traffic and lights; then the 6 is a better choice.
