please help with passive intake

hendu 420 · Dec 22, 2014

Hey guys, i have a cab thats 36" w x18" d x 48" tall, my exhaust is a 160 cfm 4" inline. Heres my question, i insist on using a series of 2" holes for my passive intake, so, to be at 4x the area of my 4" exhaust, how many 2" holes for my passive intake? Trying to get better airflow for a little drop in my temp. Thanks in advance for any help.

justugh · Dec 22, 2014

u need 4 2 inch holes

a passive intake should be double the exhaust .....u are using 4inch so u need 8 inches worth of passive intake space

hendu 420 · Dec 22, 2014

justugh said:
u need 4 2 inch holes

a passive intake should be double the exhaust .....u are using 4inch so u need 8 inches worth of passive intake space

Thank you. Im actually still looking to go a little bigger. I want 4x, just dont know how many 2" holes that equates to. But i understand what your saying.

jijiandfarmgang · Dec 23, 2014

A = πr2
A=3.14*4 A=12.56 square inches for 4 inch circle
A=3.14*1 A=3.14 Square inches for 2 inch circle

4*12.56=50.24/3.14=16 2 inch square holes

- Jiji

hendu 420 · Dec 23, 2014

jijiandfarmgang said:
A = πr2
A=3.14*4 A=12.56 square inches for 4 inch circle
A=3.14*1 A=3.14 Square inches for 2 inch circle

4*12.56=50.24/3.14=16 2 inch square holes

- Jiji

Thank you so much

please help with passive intake

hendu 420

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justugh

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jijiandfarmgang

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