if a car calls for .060 is a smaller gap gonna make it do something different than like a .090 gap?
What does changing a spark plugs gap do? does it make the spark hotter?
A lot goes into the decision of what gap is correct. First the compression ratio, grade of fuel being used, tye of axle ratio and type of transmission. Then there is the firing KV killa-volt. according to the type of ignition that you have. standard ignition with points and a condenser is 15,000 to 18,000 volts. HEI= high energy ignition will go to 60,000 volts and COP= coil over plug can go to 90,000. The last is CDI= capacitive discharge ignition and it is capable of 125,000 volts. So if you have a ignition system that is very strong, it can bridge the larger gap and provide a strong ignition. The spark plug is the other side of the equation, wrong plug and you have a poor running car. Stick with what the dealer recommends and you will eliminate any problems in that area. Hope this helps.
What does changing a spark plugs gap do? does it make the spark hotter?
well the larger the gaps is called for the hotter is may be but each car has their own ignition that is only capable of producing a spark hot enough for what it was designed to do. the spark doesnt get hotter when you change the gap but it changes the profile meaning that it changes its amperage and duration. be careful not to make it so small that it cant ignite and to large that it will be put out before the fuel is ignited.
