High Performances Spark Plugs

How a Spark Plug Works:

The basics of a spark plug is that it must perform two primary functions.

  1. To Ignite the Air/Fuel mixture
  2. To REMOVE the heat out of the combustion chamber

Spark plugs transmit electrical energy that turns fuel into working energy. A sufficient amount of voltage must be supplied by the ignition system to cause the spark to jump the across the spark plug gap, thus creating what is called Electrical Performance.

Additionally, the temperature of the spark plug's firing end must be kept low enough to prevent pre-ignition, but high enough to prevent fouling. This is called Thermal Performance and is determined by the heat range of the spark plug.

It is important to understand that spark plugs CANNOT create heat, only remove it! The spark plug works as a heat exchanger, pulling unwanted thermal energy away from the combustion chamber and transferring the heat to the engine's cooling system. The heat range is defined as a plug's ability to dissipate heat. The rate of heat is determined by:

  • The insulator nose length
  • Gas volume around the insulator nose
  • Materials and/or construction of the center electrode and porcelain insulator

Now to the actual function: As the Ignition is triggered it sends the spark through the rotor, to the cap, down the wire and then it jumps the gap of the spark plug, a spark kernel is created that ignites the air/fuel mixture in the combustion chamber. Proper timing of this spark is not the only concern as described above. You must have the proper heat range as well as the correct gap.



STI JDM IRIDIUM SPARKS PLUGS FOR WRX STI CARS


Spark Plugs from STI Japan. These iridium super cold spark plugs will help in your ignition system and the overall operation of your car. Quicker throttle response.



SO PLEASE HEAD DOWN TO THE NEAREST WORKSHOP AND GET YOUR SPARK PLUGS CHANGED FOR BETTER PERFORMANCE.


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