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06:20:49 - 04/25/2024
V6 Dakotas
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philip
Dodge Dakota
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3/17/2004
00:11:06
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 Subject: a question regarding the intake
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Recently, I removed the rubber flap and the 90 degree stock elbow from my intake and placed in a K&N air filter. Is this an ok thing to do or am I just asking for trouble with the engine later down the road?
Philip
2003 Dakota SXT 3.9L
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Jon
Dodge Dakota
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3/17/2004
00:24:07
| RE: a question regarding the intake
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Won't hurt a thing.
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swilliamson
Dodge Dakota
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3/17/2004
10:35:18
| RE: a question regarding the intake
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But, will it help anything other than shortening the life of the filter element, and getting that side of the engine dirtier?
From looking at the design, as least on the GenIII Dak, DC did very well designing the air flow so that it pulled in fresh air through the air channel down the passenger side fender. Their design keeps you from sucking water, raod grime, insects, leaves, rocks, small birds, etc... into the air box or the engine compartment. It looks to me like you would be better off having a bigger bore tube go directly in the fender hole.
Now, I am a total newbie to all this. So correct me if this line of thinking is completely wrong.
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99DAK
Dodge Dakota
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3/17/2004
11:47:46
| RE: a question regarding the intake
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The bigger problem with the stock intake setup isn't the filter, it's the airbox restriction. I removed the intake tube and enlarged the hole to 4" diameter. In the winter it gets engine compartment air for mpg, summer it gets a 4" pipe to the front grill. Even with a paper filter (not interested in the high-dirt-flow K&N) this produces slight performance and mpg gains - YMMV. And you do get some bugs, leaves, dirt, etc. (very little) but I have yet to see any water, rocks, or small birds in my airbox.
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Jon
Dodge Dakota
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3/17/2004
14:02:13
| RE: a question regarding the intake
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When i had my truck setup like that i did notice more small stones in the airbox, but that k&n does a good job filtering everything out. My truck has 100 thousand miles on it and it has had a k&n for about 50,000 of those, with no problems. I also ran a k&n on my other truck which had 115K and still ran great when i swapped in a bigger engine.
As for the gain from the rubber flap removal you probably won't notice much, but hey, it's free. Right now i am running cold air induction with a cowl induction hood scoop. IT works awesome, i drove the truck with my scan tool hooked up and my intake air temp was the same as the outside air temp once i got up above 15 miles per hour.
-Jon
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swilliamson
Dodge Dakota
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3/17/2004
14:16:46
| RE: a question regarding the intake
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I was of course being a little sarcastic with the bird comment, however, I have had to pull them out of the grill before.
I have always wondered about the K&N filters. They were designed for racing, with the idea the engine is rebuilt very often, with generally a maximum of 500 miles on it before being rebuilt. In that case, all you really need is to filter the "big chunks" out. However, for everyday grocery getter use, the K&N or other "high flow" filters seem a little counter intuitive. After all, these filters achieve higher flow rates by relaxing the size constriants for passing particulate, ie. they let bigger particles into the engine. For me, where I tow my camper 50% of the miles the truck sees, it seems like alowing larger particles in when I am on a lot of dirt and gravel roads would be a bad thing. Even if the truck was strictly a pavement pounder, there is a lot of road particulate that is present just from the blowing dust, tire sluff, etc... That is all stuff I want to keep out of the engine. So I guess for me, I will likely just mod the air box with a larger smooth bore tubes, but stick with the "restrictive" air filters and leave the K&N styles to the racing folks.
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99DAK
Dodge Dakota
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3/17/2004
18:53:29
| RE: a question regarding the intake
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The K&N probably isn't going to noticeably affect engine life, but again, the bigger restriction isn't the stock filter, it's the airbox. The only way I think I'd see a difference with the K&N is if I spent a significant amount of time above 3K rpm, which I don't. Also remember that Dodge gave the V6 the same filter as the V8, so, at least theoretically, the V6 has some headroom there.
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