1. 

   MT BUICKNUT Well-Known Member

   I have Stg1 alum heads and have NGK FR5 plugs now. I am switching to methonal and was told to go to a heat range of 9. The FR's only go to 5 or 6. What do I need to go to with cadium plating?
   Thanks Rick

    

   MT BUICKNUT, May 30, 2010

   #1
2. 

   LARRY70GS a.k.a. "THE WIZARD" Staff Member

   
   NGK BP9ES which is a cooler plug. Heat ranges from 4-9

    

   LARRY70GS, May 30, 2010

   #2

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