[9fourteen]

Thanks for the responses. It's good information. I have no plans on becoming a designer of race engines or anything, just want to understand how things works and why I might want to make a certain modification. Hopefully, sooner than later I'll start rebuilding an engine for my 914. At least that is the goal. Anyways I found a article on the web that talks about the physics of an IC engine. I thought it was easy to understand for beginners like me. It has some simplified calculation on how to calculate torque and power that will give you some ball park numbers. Here's the link is anybody is interested.

http://mb-soft.com/public2/engine.html