<VV> Cold plug/ Hot coil= what?

[Bryan Blackwell]

Hi Jeff,

Frank Duvall posted a great description of plug heat range.  Just one  
thing to add - "hot" is often used to refer to a powerful spark.   
Typically this doesn't apply to plugs, but it's often used to  
describe a higher voltage coil or electronic ignition system.  So,  
two different uses of the word - a "hot" plug really is hotter in  
terms of degrees, a "hot" spark has a lot of electrical power.

--Bryan

On Jan 12, 2009, at 5:53 PM, Jeff Wilson wrote:

> Someone educate me what the 'temparuture' of a plug really means.
> How does this relate to gap of the plug and 'hottness' of the  
> spark, and
> the voltage produced by the coil, etc etc?