Originally posted by ManTiS
IDEALLY, you want a bigger gap. With a big gap, you need big voltage...big voltage means better ignition of the mixture. Big voltage cannot be provided with from a stock ignition. Therefore, us stock ignition-users must lower plug gap, when making big power, in order for the mixture to ignite properly.
word! Smaller gap=stronger spark. It's not bigger (as in length) since you can't get the power you need from a stock ignition, but the current taht can flow with a tighter gap will be higher. Stronger, more intense spark. Stupid terms... A light bulb lights up your room. That's a large gap. An acetaline torch lights a small corner of a room, but so intensely, it can burn your retinas....