My first flowbench was digital but tests were done at 10 inches of depression and converted to 28 inches. I loved the simplicity of this bench but I was to limited So off to Columbus Ohio I went to buy a 400 pilot bench with two liquid manometers. Very complicated bench to keep calibration as the weather affected it real bad and the conversion factor at every lift was all lost time. I could see movement on the liquid manometer but it was slow and unpredictable. So I build my bench exactly how I wanted it to be. Now imagine all electronics and taking readings. Have you ever noticed the numbers moving around on a digital electrical test meter. We’re on my bench at different lifts the electronics move and if they are jumping big time (Airwolf head) airspeed is so high the port can’t control it. You can hear it and with electronics you can see it. Quiet is good, noisy is bad. With Edelbrock heads and copies the short side sucks azz from
The factory and lowering it makes things worse. Don’t get me wrong you have to lower it to get the needed shape but not to gain area (cc’s). With electronics I have never had to measure a port. My bench will tell me by probing and checking airspeed where the port needs work. Hit the pinch, then hit the shortside, check here, check there. Back and forth till I’m happy. With the Airwolf head we tested as delivered and one port my buddy touched up. My buddy’s port was calmer but still not great but to fix it would require putting material back into the head. I will see these heads in action probably next year. Sorry that rambled on.
