This one says: Time spent on the toilet in an average personâs lifetime: 525,600 minutes. http://www.thecrimson.com/article.aspx?ref=350161 Nov 12 08, 10:43 PM
Compression Ratio is defined as the ratio of Maximum engine volume to minimum engine volume. In Mechanical Terminology, its ratio of Total Volume to Clearance Volume. It is fundamental specification of engine. For Spark Ignition engines, the ratio will be around 10:1 to 15:1.
The compression ratio of your engine determines the octane rating of the gas you must use in the car. One way to increase the horsepower of an engine of a given displacement is to increase its compression ratio. So a high-performance engine has a higher compression ratio and requires higher-octane fuel. The advantage of a high compression ratio is that it gives your engine a higher horsepower rating for a given engine weight -- that is what makes the engine high performance..