Oct 19, 2015 #1 D dvernst Well-Known Member Joined Jan 9, 2006 Messages 1,879 Anyone know if you can use a spark plug with a gasket on stock heads? Thanks!
Oct 19, 2015 #2 T TT/Ameasap The White Blur Joined Jan 31, 2002 Messages 5,374 Nope. The stock heads require a tapered seat plug.