mopar-or-no-car
Full Access Member
That's a much better no bashing post!
As long as the same metal for a conductor is used it all boils down to slight variations in plug electrode depth, strap depth, electrode diameter, even on what books say Cross Reference as same plug from diff manufacturers. A certain combustion chamber design ( vary from manufacturers and engine style) like a certain plug!
If your 1983 Honda Big Red 3 wheeler had a Denso( likely) or NGK (also likely) it should've been replaced with same plug, not a Champion. Guess that's my best lay explanation.
the small engine stuff was just before I had any experience in automotive...later in life I had countless problems with champions FE TT motor, mopar wedge would melt champion plugs like cannon wicks...fast forward to now and back 10 years,you would be amazed at the champion failures ive encountered working on small engines...and I only use oem or equivalent...