LOL....... 
horsepower causes "P" factor then? 
Exactly. When will you admit that you are stu-stu-stupid?
The P factor is the key. At the molecular level, forces beyond your comprehension cause the expansion and contraction of the aluminum block as the result of the piston cycling which, in turn, is NOT the result of ANY sort of controlled explosion resulting from the combination of fuel, oxygen and spark.
Your ignorance is apparently hard to cure... you might even say its like Bruce Willis in that movie from the mid-80's with the German dude... whats its called?
