I am trying to measure flow rate as function of RPM. You can measure pressure drops across an orifice but this works mainly in gas, not liquids. The turbine is a common method but is accurate in a small range of flow rates. If you knew the accuracy of your home gas meter you would be shocked. In my gas lab we tested all sorts of meters and if the flow has not stabilized, all bets are off.

Back on subject, I am hoping to see how my mechanical water pump is working and then compare against an electric pump. I t have low speed cooling issues and I want to make sure I don't lose cooling at high RPM. I am pretty sure there will be a big overlap on performance.

BTW this project is a 914 with a Chevy 327 with 400HP in it. Pretty hot motor. Literally.

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MB-less