I’m currently using Denso W27ESR-U (4045) plugs. I’m happy with them, but I would like to get plugs without the threaded tips for the next service. Any recommendations?
I’m currently using Denso W27ESR-U (4045) plugs. I’m happy with them, but I would like to get plugs without the threaded tips for the next service. Any recommendations?
From Sparkplugs.com web NGK BR9ES (5722) threaded terminal plug is cross referenced for W27ESR-U but:
NGK BR9ES (3194) ($4.53) plugs have solid terminal are same heat range and gap as Denso W27ESR-U ($3.19)
NGK BR9EIX (3089) ($8.45) plugs have solid terminal and same heat range and gap as W27ESR-U ($3.19)
Bill, I see you’re running a BR8 in your -10. That the next range hotter. So far in my IO 540 the plugs are burning clean and the head temps are good. So question, if I went to a hotter plug, that would also possibly increase cylinder head temps? I’m running 9:1 cylinders with standard sump and air intake.
The NGK Iridium that the OP wants is the 6747 model with the solid cap. The 5044 has the screw on cap.