Air Intake
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Senior User
Joined: Feb 2002
Posts: 402
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From: Two Harbors, MN
Air Intake
I know its been addressed in past threads, but I dont have the patience to find it so.... Could anyone tell me, or has anyone modified the stock air intake to accomodate a K&N... I seem to remember something about cutting part of the top half off and then using the cone type filter.. Ring a bell with anyone...
Detailed instructions would be wonderful if possible because, around here, when I get the rotozip in my hands, I turn into the tazmanian devil
thanks for the help
slammer
BTW.... nice to have you back MONSTA
Detailed instructions would be wonderful if possible because, around here, when I get the rotozip in my hands, I turn into the tazmanian devil
thanks for the help
slammer
BTW.... nice to have you back MONSTA
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
Air Intake
No but as I re-read the original post I can see where your question would come from.
So for slammer's benefit...slammer, I'm sure that you must know that the K&N is a drop-in filter and requires no airbox modifications. And if you weren't sure before, you should be now.
Dodge no more, I believe slammer was looking for new ways to incorporate power tools in his modifications.
But I also believe now, that he could be referring to cutting the plastic cone from the end of the OEM or Fram filter and gluing it onto the end of the K&N once the airbox is modified. The pictures in the link provided do not show that.
So for slammer's benefit...slammer, I'm sure that you must know that the K&N is a drop-in filter and requires no airbox modifications. And if you weren't sure before, you should be now.
Dodge no more, I believe slammer was looking for new ways to incorporate power tools in his modifications.
But I also believe now, that he could be referring to cutting the plastic cone from the end of the OEM or Fram filter and gluing it onto the end of the K&N once the airbox is modified. The pictures in the link provided do not show that.
Freshman User
Joined: Jan 2002
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Air Intake
Thanks a bunch! Thought I surely screwed up somewhere. I screw up enough without even trying.
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Postmaster
Joined: Nov 2001
Posts: 4,742
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From: OK
Air Intake
There could definitely be two different mods inferred from the question. Quite honestly, I don't know that cutting the SD airbox is as helpful as it is on an F150 (or Expy) since the SD pulls air from the front of the truck. Maybe cutting the snorkel off and opening a hole in the fiberglass radiator support (aka Zoodad mod) would be beneficial. I now have the Banks airbox & did the "zoodad" hole a long time ago. Neither seemed to help all that much IMO.
Air is very turbulent in the airbox so I'm not sure the second (cone) mod is really all that helpful either.
Air is very turbulent in the airbox so I'm not sure the second (cone) mod is really all that helpful either.
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Thread Starter
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Senior User
Joined: Feb 2002
Posts: 402
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From: Two Harbors, MN
Air Intake
OK.......... I'm having brain farts... so the K&N will fit right into the existing airbox w/o modifying it? I thought you had to open it up, like the FIPK is, to get beneficial airflow... If I dont, then I'll put the rotozip away
... and drop the new filter in
Thanks all.......
slammer
... and drop the new filter in Thanks all.......
slammer
New User
Joined: Mar 2002
Posts: 13
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From: vancouver usa
Air Intake
Just looking at u-all's pics on air intakes....cant help but wonder if there is any bad result due to accumulation of dust/bugs,etc forming onto the k/n filter. Am looking to get more air to my '02 SD F-350. Like the look but bugs,dirt?
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
Air Intake
Well as far as bugs, dirt and stuff getting on the filter...well..that is it's job, right? 
I'm not sure how bugs and stuff would get into the engine compartment unless you did the ZooDad mod and DID NOT put some sort of screen behind the grill. That would be silly not to put a screen behind the grill while you have it off.
As for the mod posted in my website above...that is not representative of what I did. I think that particular mod (without even the integrated "plate" to block some of the heat) would still pull a bit too much hot air from the engine compartment.
FYI, there is an additional cover that can be had for the K&N to help keep the big stuff out of the pleats.
I'm not sure how bugs and stuff would get into the engine compartment unless you did the ZooDad mod and DID NOT put some sort of screen behind the grill. That would be silly not to put a screen behind the grill while you have it off.
As for the mod posted in my website above...that is not representative of what I did. I think that particular mod (without even the integrated "plate" to block some of the heat) would still pull a bit too much hot air from the engine compartment.
FYI, there is an additional cover that can be had for the K&N to help keep the big stuff out of the pleats.
Elder User
Joined: Apr 2002
Posts: 541
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From: Paducah KY
Air Intake
I don't think this airbox modification is a very good idea. This mod is done quite frequently on late model mustangs with mixed results. The air filter is located right next to the fan. The problem is when you have the filter open to the engine compartment a phenomenon occurs called "fan wash". This has to do with the how the air is sucked into the engine. The fan produces swirls/waves of air and throws these out of the fan shroud and they eventally hit the airfilter causing inconsistent MAF readings. This causes problems with the Mass Air Sensor(MAF). The result is hunting idle or rough idle. Many people fabricate sheilds that are mounted between the airfilter and the fan shroud to avoid this situation.
Senior User
Joined: Jun 2001
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Air Intake
...and on the other side of the coin.
I for one did do this mod, cut the airbox open, put a K&N in and an OuterWears prefilter. No heat shield whatsoever and have had no problems at all with bad or rough idle or any power loss, even on the hottest of days, over 100 degrees, still no problem at all. I will also tell you that I did NOT notice any major power gains either. IMO, the mod isnt worth the effort other than it looks good and sounds good.
For what its worth.
I for one did do this mod, cut the airbox open, put a K&N in and an OuterWears prefilter. No heat shield whatsoever and have had no problems at all with bad or rough idle or any power loss, even on the hottest of days, over 100 degrees, still no problem at all. I will also tell you that I did NOT notice any major power gains either. IMO, the mod isnt worth the effort other than it looks good and sounds good.
For what its worth.
Elder User
Joined: Apr 2002
Posts: 541
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From: Paducah KY
Air Intake
Wouldn't adding a prefilter to the existing K&N filter defeat the whole purpose of having the K&N? Most people add the K&N airfilter because it has less restriction to air flow than the stock filter. By adding another filter (prefilter) to the existing filter your are restricting the air flow more therefore, defeating the purpose of the K&N.
Maybe I'm wrong. This would take some intense calculation in order to find out if the stock filter or the K&N with the prefilter has less drag.
Maybe I'm wrong. This would take some intense calculation in order to find out if the stock filter or the K&N with the prefilter has less drag.