Don't worry about no spark advance: - that's for fourstrokes! Most bike engine 2strokes LIKE a little rpm-retard! An HEI has constant switching(dwell) time - BINGO!!! Hey, I rode "almost stock" motocross bikes and kicked ass 1972-1979 and nobody could believe it! My secret? My uncle was OMC's Chief Engineer and my Dad knew his spark and jetting(recip. airliner mechanic). Beaucoup power, stock motor... Nowdays it's digital maps, and they rpm-retard as V.Efficiency improves with revs...
Don't worry about no spark advance: - that's for fourstrokes! Most bike engine 2strokes LIKE a little rpm-retard! An HEI has constant switching(dwell) time - BINGO!!! Hey, I rode "almost stock" motocross bikes and kicked ass 1972-1979 and nobody could believe it! My secret? My uncle was OMC's Chief Engineer and my Dad knew his spark and jetting(recip. airliner mechanic). Beaucoup power, stock motor... Nowdays it's digital maps, and they rpm-retard as V.Efficiency improves with revs...
mowrman100 6 months ago