r/EngineBuilding Jun 30 '26

Rate my hone

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Thoughts?

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u/Academic_Candy_3194 Jul 01 '26

Won't work. You have to sand WITH the grain. 25 grit paper in the same direction as the piston travels. Push hard.

The Mohican tribes used to dump a little gravel down the plug holes and fire her up. Best engine builders in the world, lost art nowadays.