[Pescador]

I knew I had this somewhere when I figured out mine.

Use area of a circle formula A = Pi * r^2 to calculate the area of the spray bar holes. and then calculate the area of the pump outlet, or the smallest diameter pipe in the outlet plumbing.

Make sure the sum of the hole areas on the spraybar is greater than the pump outlet calculation.

So if my math is right

1" pipe is .785 sq"
1/4" hole is .04908 sq "

.785 / .04908 = 15.9942 or 16 holes