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Good looking cylinder You didn't show, but I presume that you made the holes for the transfer port in the same setup too Best wishesPer
Are you heat treating your rings? There seem to be a number of different thoughts on this
That's some mighty nice looking work you are doing Andrew!
great runner you have made, congratulations !I see that you have replaced the contact breaker by a Hall sensor, but the timing of the spark seems to be adjusted for once, and not on the fly