Water injection has been used for a long time on high compression motors to help with low octane fuel. It tears up the motor pretty good in terms of corrosion in all the wrong places.

Explain exactly how you can do a 6 stroke motor without cam mods. What are the valves doing during the extra 2 strokes? They are compressing which is using energy. 6 stroke = bad idea. If you wanted something like that you should look at a rotary engine......

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