This installment of the Roadkill Extra enginebuilding series gets a bit theoretical: What is compression ratio, how does it affect engine performance, and how can it be altered? But it’s also very practical, as David Freiburger explains every detail you need to understand in order to use a compressionratio calculator. Tune in and tune up!

https://www.motortrendondemand.com/su...

As you watch, cruise over to Facebook.com/RoadkillShow, follow us, and watch for future posts asking for your questions to be answered on the Q&A sessions that are posted every Friday on Roadkill Extra Powered by Dodge.