Which direction does the crankshaft turn?
#5
Gas and diesel engines are.
There are a few super high performance race engines that run counter clockwise, but they are rare and we will never work on them.
#6
#7
That may be so but you have to admit that 99% of people think of a car engine when you say internal combustion engine.
http://www.speedace.info/internal_combustion_engine.htm
http://en.wikipedia.org/wiki/Internal_combustion_engine
http://www.speedace.info/internal_combustion_engine.htm
http://en.wikipedia.org/wiki/Internal_combustion_engine