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What are the benefits or consequences of using a colder plug N/A?

Old Jul 24, 2006 | 10:47 AM
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What are the benefits or consequences of using a colder plug N/A?

What would be the result of using a plug one step colder than OEM in a N/A engine?

Would it result in excessive fouling of the plug?

Would there be any benefit?
 
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Old Jul 24, 2006 | 12:30 PM
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No benefits whatsoever on an NA engine, and more than likely you'll foul the plugs faster.

Only use colder plugs if the combustion environment will be "hotter" as in under boost or extremely high compression. So the only time you really want to go colder on NA is if you increased the compression ratio of the engine.
 
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Old Sep 25, 2006 | 04:21 AM
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what about if you have engine pinging... will the colder plugs help then?
 
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Old Sep 25, 2006 | 09:02 AM
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i believe that's what the service manual calls for if there is pinging...
 
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