I had an Austin Healey Sprite that had two burnt valves with practically no compression on two of four cylinders. Absolutely gutless running on two cylinders.
I would do a whole lot or research on this proposed desgin before I started hacking up a decent vehicle. To equal the pressure created by combustion you will need about 7 times the compression pressure, 12-1400 PSI would empty a 3000 PSI CO2 bottle in a very short time.
regards
Mech
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