[ElAurens]

Interesting discussion Viper, thank you.

I am a mechanic, not an engineer, and I work on vintage/veteran automobiles.

I have always wondered why you never see Brake Mean Effective Pressure used in modern automobile engine specifications. All the old English cars I work on usually have this listed in their manuals, and it is indeed indicative of their maximum development potential. We race a Triumph TR3, and after all the years of development and money spent on this old design, the maximum BHP that they produce now is still just about what tuners got out of them in the 1960s. Just no way to get around that BMEP thing in any meaningful way. The only thing that has changed over the years is the ability to have much flatter torque and BHP curves, so the engines are more flexible and lap times decrease, even if maximum power is about the same.

Sorry to go off topic, but I rarely get to talk about these things outside of our small vintage racing community.