Rotary Engine EFI Hydrogen Conversion Kit
An internal combustion engine powered by hydrogen needs to have its compression ratio increased to get maximum fuel efficiency. 11-1 to 18-1 is recommended. This is in the range of a Rotary or diesel engine.
Do you remember when GM took its standard gas engine and tried to make a a higher compression diesel out of it?
It just didn’t hold up.
This is something to consider when making your own modified engine.
Rotary are simple in design and have controlled and low volme air intake air space making them ideal for hydrogen and generater use.