DRTDEVL wrote:
BTW: All backpressure is bad. Its a misnomer. All that is required is proper scavenging of the gases. This is commonly misidentified as a backpressure requirement.
My bad ... I used an outdated term. You are very correct, proper exhaust scavenging is vital for performance and efficiency.
30-40 or more years ago, 'back pressure' was the term used when 'scavenging' was more appropriate and what should have been used all along. My understanding of exhaust dynamics should have made me realize, decades ago, that I was using a misleading and inappropriate term. Thank you for correct my vocabulary.
