[9fourteen]

I'm trying to understand how the bore, stroke and compression ratio are related. I looked up the formula for compression ratio and the only variable that I don't understand is the volume of the combustion chamber. I think I understand what it is but what I don't understand is how it varies from lets say a 2.0T and 2.0S engine. Those engines have the same bore and stroke but the S has a higher compression ratio. I assume they use the same head. What is different in the S engine? High domed piston?

I also have another question, is there anyway to calculate the horsepower (or torque)? Like a theoretical based upon engine specifications. Or can it only be measured like on a dyno?