I’m using a jetting app for my kz kart and it suggests using the NGK BR11EG for anything over 17 degrees(celcuis). However I can only seem to find a B11EG
Is there much of a difference between a B11 and a BR11?
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https://www.ngk.com/what-is-a-resistor-spark-plug
R in the types at the ngk spark plugs . Means ifs a resistor type one .
Thats the difference
Basically you only want one resistor in the ignition line. Usually this is in the plug, or the cap. So in a situation where you have a resistor cap, you want a non resistor plug.
Otherwise those plugs are identical heat ranges. The 11’s are pretty cold though. Even with the air cooled 100cc rotaries I usually ran a 10 in dry conditions and a 9 when running in or wet conditions.
While we’re talking plugs I’m fond of the NGK EIX. These are a fine wire iridium plug. in theory a fine wire plug is slightly less prone to fouling and gives a more focused spark. While the palladium metal helps with longevity. In the case of a non resistor cap, the plug would be BKR10EIX
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