Quote Originally Posted by techinspector1 View Post
The motor needs 1 square inch of filter area for each 6 CFM of air into the motor.
Please explain where you got this number. Does it not change with each manufacture on the flow rate of the paper they each use, the number of folds (length of element) K&N? K&N copies.
Aren't they all different CFM's
Using your 1 3/4x14xpi. wouldn't that "ACTUAL filtering area of 77 square inches" be off by about 2-3 times, depending on the paper length. (folds)
When you put a residence (airfilter) in any flow, you don't go by the opening, you go by surface area residence per inch for CFM.

Pat