Flat six boxer model engine by dickinohio. 2:32 video.
https://www.youtube.com/watch?v=H-DnynRxZ3U
Previously:
https://www.homemadetools.net/forum/...992#post112107
https://www.homemadetools.net/forum/...088#post157364
https://www.homemadetools.net/forum/...131#post138215
https://www.homemadetools.net/forum/...052#post137975
https://www.homemadetools.net/forum/...2320#post76150
https://www.homemadetools.net/forum/...901#post137416
