Thermoquad 1966 Metering Rods

Rumble fish.
Post #8. Not crazy at all for the purpose of testing to see if a richer mixture improves/stops pinging. I have done it, many times. Just because you have not done it does not mean it doesn't work. Your post 9 & 11 are just nonsense. There is no such thing as the 'total area of the circumference'.
If you bothered to fully read what I said, it was to cruise at light throttle [ on the idle cct, not the cruise step of the met rod so as to avoid plug fouling ] to the test location.
Apparently you are unaware that when comparing fuel flow through a jet you use area, not diameter. A 045 met rod tip in a 098 jet gives an area of 0.005953 sq in. With no met rod, 098 jet only, the area is 0.007543. The increase in area by removing the 045 met rod tip is only 16%, not the nonsense you came up with.