Bore vs Stroke - What Makes More Power?

What Makes An Engine Better? Big Bore vs Long Stroke Bore and stroke cause differences in both power and efficiency. Subscribe for new videos every Wednesday! - https://goo.gl/VZstk7 All piston-cylinder internal combustion engines have a choice to make with regards to bore and stroke. Should an engine have a large bore (the width of the cylinder)? Or would it be beneficial to instead have a small bore and a long stroke? Or should the bore and stroke dimensions of the engine be identical? We ll discuss how bore & stroke affect engine RPM, engine airflow, heat losses with regards to surface area, and flame duration. What makes the most power may not always be the most efficient. With regards to bore and stroke, an engine is called "oversquare" if the bore is longer than the stroke, "square" if the bore and stroke are identical, and "undersquare" if the stroke is longer than the bore. SAE - A Study Isolating the Effect of Bore-to-Stroke Ratio on Gasoline Engine Combustion Chamber Development https://www.sae.org/publications/technical-papers/content/2016-01-2177/ Recommended Books & Car Products - http://amzn.to/2BrekJm EE Shirts! - http://bit.ly/2BHsiuo Engineering Explained is a participant in the Amazon Influencer Program. Don t forget to check out my other pages below! Facebook: http://www.facebook.com/engineeringexplained Official Website: http://www.howdoesacarwork.com Twitter: http://www.twitter.com/jasonfenske13 Instagram: http://www.instagram.com/engineeringexplained Car Throttle: https://www.carthrottle.com/user/engineeringexplained Amazon: https://www.amazon.com/shop/engineeringexplained EE Extra: https://www.youtube.com/channel/UCsrY4q8xGPJQbQ8HPQZn6iA NEW VIDEO EVERY WEDNESDAY!