ORIGINAL: gaRCfield
How does an OS F plug fit into the mix? They claim it's for four strokes, but I found that many guys are using them on big two strokes; I tried it and my engine is running better. Is it longer and hotter than an 8?
The #8 plug is about .17" and the F plug is about .25" counting the washer. Thats very rough measurements taken through the package.