Dang it quit distracting Jim, you're holding up Ms Peel's compression releases.
I am fully equipped to loft my full size anvil but lordy its pretty dangerous for such meager sonic thrill, not national emergency squadrons called out scale, not one call in they felt impact of an air craft carrier crashed in the field near by and so forth for county wide ripples. Its the type of power I could use to start Peel, but piston would have to be set just before TDC with valves close before ignition sucks it through TDC. Some day may entertain at a ralley, like LOP and feel it yourselves.
Without the major inert N2 gas we would not get very far on combustion products and heat alone.
Jim's piston radius is ~1.6", gives ~8 sq in per jug or !6 sq in total twingle.
Say 100 PSI cold compression gives almost 7 lb per sq in. Times 16 sq in
equals 112 lb TDC force to over come by poor kicker leverage or strained starter.
If 120 static PSI then 1/5th more to kick over but these examples are for clapped out 8 CR engine.
[video]http://www.youtube.com/watch?v=rh1lxbelxVI[/video]