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Sledge
Dodge Dakota
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8/13/2003
21:43:46
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 Subject: Cold Air Intake where to point Filter
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Message:
All-
I was wondering if people had an opinion on their Cold Air Intake for a 3.9 V6. I have removed the flap by the radiator, but as designed the flap is there to filter air to the end of the stock air-box snorkel.
Should I:
A: Put the flap back on and angle the filter towards the opening where the stock snorkel is?
Or
B: Leave the flap off and angle the filter towards the opening to the left of the radiator?
If no one has a solid answer I may have to build 2 intakes and test it.
Any help is appreciated.
Sledge
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bman42
Dodge Dakota
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8/14/2003
08:35:50
|  RE: Cold Air Intake where to point Filter
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Message:
Let me know if you find out anything. I was going to experiment with a cold air intake also. I bought a stock airbox off ebay for a 2001 QC 5.9L. I added a fitting to the stock elbow that leads to the fender hole. I have a 2" dia. hose that I will connect to the fitting and run to the front somewhere to help get more cold air into the box. I figure the more I can force in the better. Then I'll add a K&N or Amsoil filter for less resistence. My main goal is increased MPG out of the 5.9.
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Deno24
Dodge Dakota
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8/16/2003
00:31:37
|  RE: Cold Air Intake where to point Filter
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Message:
put it where the stock filter is, Ive seen tests where the intakecharge from the engine compartment is only 2 degrees warmer than ambient temperature,not very significant.Put it where its easiest. I did se an interesting post where a guy has his located behind and next to the foglight,after looking at mine i dont know how he did that,but it was cool.
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Sledge
Dodge Dakota
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8/16/2003
01:41:43
| RE: Cold Air Intake where to point Filter
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Message:
I have seen the set-up with it ported through to the bumper. I would worry about dirt/snow/mud/water getting in it located there (not to mention the cutting of the metal plate to get it there)
Anyone who has done a home-brew have issues with anything other than air getting into their filter depending on the filter placement? I am still pondering the grill vs stock cut out with adding back the flap. Fearing water intake if I drop the filter in right next to the grill (Better air intake but better water intake from rain too?)
Sledge
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03Dak
Dodge Dakota
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8/16/2003
01:47:06
| RE: Cold Air Intake where to point Filter
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Or you can see my install HERE.
I don't know about a mere 2 degree diff from ambient air. Because I'm sure more then 2 degrees is gained behind the radiator when I'm pulling 70+ MPH up monster hills towing a trailer and the FAN CLUTCH engages!!! LOL!
I think I got a slight gain for towing in the mountains. I didn't have the truck long at all before I did the intake, so I don't remember how much I may have gained.
That home brewed intake setup cost about $50 for the filter (K&N) and about $40 to $50 for the ABS and no hub fittings.
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Deno24
Dodge Dakota
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8/16/2003
01:53:38
| RE: Cold Air Intake where to point Filter
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Message:
Im still trying to figure out how you plumbed it to that location, are you runnin a V6?
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Deno24
Dodge Dakota
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8/16/2003
02:06:18
| RE: Cold Air Intake where to point Filter
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Message:
Ahhh....ok, not very eyepleasing but nice.
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Sledge
Dodge Dakota
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8/16/2003
02:08:04
| RE: Cold Air Intake where to point Filter
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Message:
Well I have the system I want to build figured out from the TB to the nice open space behind the pass headlight. Took me a week and 12 stops to plumbing shops (finally got it at an RV for the ABS)
BUT I still need to figure out... will I get water in this $50 filter if I drop it behind the grill if I "fire it" forward, as I said I have the option to put the rubber flap ack on, turn my fernco fitting and aim the filter towards that stock cut out in the fender (where the stock snorkel is now)
Sledge
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03Dak
Dodge Dakota
JOIN HERE
8/17/2003
01:28:58
| RE: Cold Air Intake where to point Filter
IP: Logged
Message:
Deno24, no I have a 4.7 V8.
I've driven through some rain and several puddles, so far the filter is fine up there.
I did install a piece of sheet metal under it to do two things.
1. Keep excess rain and mud from splashing up onto it, which is almost impossible because the filter is up in front of the wheel well.
2. Catch the $50 clamp of K&N filter if it were to slip off the pipe, which so far it hasn't.
The intake tube is 3 inch ABS with a 3 inch "no hub" rubber adapter to make the connection to the throttle body. I bought a random selection of 90 degree elbows, 45 degree, 22 degree, etc and by some luck used exactly what I bought with no extra.
I cut a 3 inch hole in the metal facing downward behind my passenger side headlight. The ABS changes to 3 inch metal tubing (leftover exhaust pipe) that enabled the 3 inch K&N filter to attach. The 3 inch ABS is 3 inch ID, not OD so it doesn't exactly plumb to the filter too easily.
I then wrapped it with foil tape to reflect heat until I get a chance to use bubble wrap.
It is loud above 3000 RPM's. The bubble wrap should also quiet that down, but I kind of like the sound now and it get's attention from who ever is next to me when they hear that sucker. It's as loud as my flowmaster.
Hope that helps. I don't think you can get any better without using a hood scoop.
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