Change in plans. Another new build begins

Well it’s time to port some heads so I spent two hours clearing off my flowbench that I haven’t used in well over a year. If you every see me comment on guys posts about their flowbenches being stingy or generous this is why I laugh. They make such a thing as a calibration plate to check and adjust your bench. If it is a bench that relies on manometers good luck with that because as the weather changes so will your numbers. Here is a 300 cfm sharp edge calibration plate made by Bruce that runs the flowbench forum