Spark Plug Heat range 7 or 8 ?

[kj5ix]

Here in God's Country ( TX ) where we can ride most of the year, what plug would be the best for this temperate zone,,,, I have in long years past went up in heat ( down in number I think it went ) and cant remember how that turned out,,,something to do with age I think

 

I know the stock plug is DPR8EA-9 What about the 7EA-9

[dingy]

Here in God's Country ( TX ) where we can ride most of the year, what plug would be the best for this temperate zone,,,, I have in long years past went up in heat ( down in number I think it went ) and cant remember how that turned out,,,something to do with age I think

 

I know the stock plug is DPR8EA-9 What about the 7EA-9

 

Look at your old plugs.

 

How many threads up from the bottom are blackened on the plugs.

 

Should be about three threads for proper heat range.

 

Gary