Originally Posted by
Beechkid
Its a good flowing filter. To verify it is of adequate size, here's a formula:
Minimum Air Filter
A= Filtering Area D= Estimated Height H= Height
For Off Road Use Multiply Height 1.5 to 2
A= (CID) (RPM) dividied by 25,500
H= A + .75 divided by (D) (3.14)
So first let me tell you, I suck at math...
I think i did something wrong cause i got 109. I don't really know what that means. so i did it like:
(CID)= 351 (RPM)= I assumed you ment around the max RPMs which i think is around 5k so i went
351*5000/25,500 = 68.82 Then i went 68.82+.75/D being 2*3.14 = 109.22.
I don't know what that is supposed to mean and i am pretty darn sure i did that wrong.