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13:07:31 - 04/26/2024
Dakota Performance
| From | Message |
93SuperDak
GenII
1/21/2006
09:44:34
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 Subject: Air filter
IP: Logged
Message:
When I installed my Vortech supercharger, the kit came with a K&N air filter that is cone shaped appprox 6" long and 5" wide. I am thinking that it is too small and may be limiting the air flow.
Gotta love them on ramps!
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ewraven
Dodge Dakota
JOIN HERE
1/21/2006
17:48:38
| RE: Air filter
IP: Logged
Message:
You can use the following formula to find out. But if the kit came from a reputable source; then that filter should be just fine.
"Use the formula below to compute the minimum size filter required for your particular application. The usable portion of the filter is called the EFFECTIVE FILTERING AREA which is determined by multiplying the diameter of the filter times Pi (3.1416) times the height of the air filter in inches, then subtracting .75-inch. We subtract .75-inch to compensate for the rubber seals on each end of the element and the filter material near them since very little air flows through this area.
A = ( CID * RPM ) / 20839
A = effective filtering area
CID = cubic inch displacement
RPM = revolutions per minute at maximum power
Example: A 350 CID Chevy engine with a horsepower peak at 5,500 rpm.
A = ( 350 * 5500 ) / 20839 = 92.4 square inches
If you are sizing a panel filter, multiply the width of the filter area (not the rubber seal) times its length. If you are sizing a round filter, use the following formula to determine the height of the filter.
H = ( A / ( D * 3.14 ) ) + .75
A = effective filtering area
H = height
D = outside diameter of the filter
3.14 = pi
0.75 = the rubber end caps
Example:
H = ( 92.4 / ( 12 * 3.14 ) ) .75 = 3.20 inches"
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