if you put a dab of gas on the ground and throw a match.
if you put a dab of alcohol on the ground and throw a match.
The one that is more explosive is th one with the lower octane.
Alcohol is better, it keeps parts nice and cool not to mention other things i know nothing about.
Dont put a dab of nitro on the ground, you may end up with a giant crater in the ground.
I agree Zip,All my blown engines have aluminum rods and they are some gernade pinned pulled shock absorbers that help cushion the impact we pust our engines.