I ran a test last week that I thought would tell me which of my engines was the best performer and walked away scratching my head instead of with a solid answer.
I tried to keep as many variables consistent during the test. Used the same gearing, same kart setup, same clutch, same tire pressures for every run and ran the test between 1:30 to 3:30 in the afternoon to keep weather change to a minimum.
What was weird was the engine that produced the best lap times ( by .3-.4 seconds per lap) turned 200 RPM LESS and generated less EGT than the other motor leaving me wondering what I did to sku the results and still leaving me wondering if the motor that turned more RPM is the better one still.
So if I read between the lines what trends do I need to look for in the data to really determine which engine is stronger? I just assumed the quicker lap times would result in the engine turning the most RPM. Since that didn’t happen I’m looking to understand what did happen.