2-stroke? 4-cycle? Awesome-stroke engine?

[TurboDomestics]

http://www.yanengines.com/YanEngines/ServicesandProducts/Products.htm

badass.

[craig]

yeah but dont even want to know what happens when parts start to break.

[JET]

Holy extra moving parts batman! Cool theory, but I doubt it would work well in real life.

[dumb_ricer]

Internal Combustion is slowly but surely going to die out. I am thinking Direct Injection is going to be the last major "breakthrough" in engineering of the IC engine.

But there are many cool concepts that could theoretically work to help up the efficiency.

[Pushit2.0]

If you want a engine that fires on the up and down stroke, look no further then a steam engine.

[iceminion]

My next car will be a plug in electric, no matter how cool you make an ICE (Internal Combustion Engine) it still sucks when gas hits $4.50 gal