spark plugs HOT COLD

balldrick

Well-known member
Gday guys, Ive got a question concerning spark plugs.I keep hearing about hot and cold and dont really have a clue what this means.Also does the plug number have something to do with this? I read where Does10s said he ran a stage colder in 2,3,4,5 and 2 stages in 1 and 6. Does this have somthing to do with fuel ratio or is it heat? and if i walked into my local parts store with a plug would they know whats colder? any info would be greatfully apreciated.
And keep up the great work Im learning alot here.
 
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