R rmrider45 Member Sep 8, 2008 171 0 Mar 23, 2009 #1 my sons rm 85 was rebuilt over the winter and i put in a ngk b9es spark plug in it . was not that easy to start for him so i put in a b10es. the higher the number , the hotter the plug ? thx
my sons rm 85 was rebuilt over the winter and i put in a ngk b9es spark plug in it . was not that easy to start for him so i put in a b10es. the higher the number , the hotter the plug ? thx
IndyMX Crash Test Dummy ~SPONSOR~ Jul 18, 2006 5,548 2 Amo, IN Mar 23, 2009 #2 lower number is hotter.
Patman Pantless Wonder LIFETIME SPONSOR Dec 26, 1999 19,774 0 Mar 23, 2009 #3 Check NGK's site it has a good explination of how it all works.
J JGrossijr Member Dec 29, 2004 36 0 Mar 24, 2009 #4 10 is the right NGK heat range for 02 & later RM85's. A fine wire irridium plug will be easier to start. Try BR10EIX
10 is the right NGK heat range for 02 & later RM85's. A fine wire irridium plug will be easier to start. Try BR10EIX