air filter
Posting Guru
Joined: Oct 2003
Posts: 1,198
Likes: 2
From: Tulsa, OK
I'm an engineer and test filters for a living. I can't say the name of my company, as this might upset some of my customers.
Basically, you would be a fool to change to any aftermarket filter from the stock Donaldson design. It is by far one of the best I have ever tested. Not only is the performance (filtration and flow restriction) excellent, but the structural integrity of the design assures no "bypass" (e.g. no filtration).
Unless you have engineering data to assist you in making your decision, you are flying blind. Keep in mind that the air filter is absolutely the most important filter on the entire vehicle.
I know this opinion may offend some of you, but I would never consider buying a used 6.0 PSD with an aftermarket air filter on it.
Basically, you would be a fool to change to any aftermarket filter from the stock Donaldson design. It is by far one of the best I have ever tested. Not only is the performance (filtration and flow restriction) excellent, but the structural integrity of the design assures no "bypass" (e.g. no filtration).
Unless you have engineering data to assist you in making your decision, you are flying blind. Keep in mind that the air filter is absolutely the most important filter on the entire vehicle.
I know this opinion may offend some of you, but I would never consider buying a used 6.0 PSD with an aftermarket air filter on it.
Postmaster
Joined: Aug 2003
Posts: 4,483
Likes: 2
From: Central Texas
Originally Posted by B Fox
I didnt know the electronically controlled direct injectid variable boost turbo 4 valve 6.0 IH was around when George Sr. was at the helm.Probably could have used some of that Donaldson technology on the first Apaches that showed up from what I can recall.K&N doesnt make a replacement for the 6.0 from what I could find.But for sure aFe and Green or Airaid are all after a piece of K&Ns market share with equall or better product.
Go to K&N at http://www.kandn.com/dynocharts/57-2546.jpg and look at the dyno chart. At 70mph my tach reads 2000 rpm. No gain there. Not until do you get up around the 3000 rpm range do you see a noticeable hp increase. And, is the filtration better?
Stick with the stock filter.
Former Vendor
Joined: Mar 2004
Posts: 4,362
Likes: 3
From: Hendersonville, NC
Most of the valid opinions have already been stated here....
But the intake is just nearly the only stock component left on my truck
The pressure gained from the Zoodad mod on the front of the filter will make more usable power than an aftermarket intake without the Zoodad, and filtration will not be of concern.
But the intake is just nearly the only stock component left on my truck
The pressure gained from the Zoodad mod on the front of the filter will make more usable power than an aftermarket intake without the Zoodad, and filtration will not be of concern.
Postmaster
Joined: Aug 2003
Posts: 4,483
Likes: 2
From: Central Texas
I have been trying to figure a way to funnel air (without water, birds and big bugs) into the stock filter better than the current setup. I think the zoodad mod is good but still leaves too much possibility for water/snow.
Posting Guru
Joined: Oct 2004
Posts: 1,016
Likes: 0
From: Lynden, WA.
SBV45, I thought the same too, about water, bugs, getting into the intake. Since I've done the Zoodad mod I've decided not to plumb all the way to the opening in the core support. That leaves a good few inches of gap for rain and snow to drop tween. I was in a heavy downpoor of snow on the hiway recently. After a few miles of travel at 60mph I stopped to check for moister in the air cleaner funnel. Nothin there. I'll probably add a screen before summer gets here. No need to plug the air filter with bugs or small birds.
Post Fiend
Joined: Oct 2002
Posts: 11,314
Likes: 4
I've not done any plumbing either....
and not had ANY issues that I can tell from visual or "seat-o-de-pants"....
Again, not sure HOW much the zoodad benefits us... but it's fun to tinker....
and any REAL benefit from this comes from the relatively COOLER air coming in from the outside versus the hotter air from under the hood....
Cooler air is denser and therefore more "burnable" for more power...
What i HAVE seen is a dropped tube down lower than the intake....
down to the the upper bumper area....
a smooth pvc pipe with nice bends would probably do it...
birds and water have a harder time turning corners and going UP an intake....
Darn - now u got me thinking about a prototype...
A thin WIDE opening up front to gather and compress the air, but u would have to find the best place for the intake where the pressure wave does not froce the air AROUND the truck, but allows it to go into the intake...
Hmmm......
I've already got too much to do this week !!!!!!!!!!!!!!!!
and not had ANY issues that I can tell from visual or "seat-o-de-pants"....
Again, not sure HOW much the zoodad benefits us... but it's fun to tinker....
and any REAL benefit from this comes from the relatively COOLER air coming in from the outside versus the hotter air from under the hood....
Cooler air is denser and therefore more "burnable" for more power...
What i HAVE seen is a dropped tube down lower than the intake....
down to the the upper bumper area....
a smooth pvc pipe with nice bends would probably do it...
birds and water have a harder time turning corners and going UP an intake....
Darn - now u got me thinking about a prototype...
A thin WIDE opening up front to gather and compress the air, but u would have to find the best place for the intake where the pressure wave does not froce the air AROUND the truck, but allows it to go into the intake...
Hmmm......
I've already got too much to do this week !!!!!!!!!!!!!!!!
Last edited by jdadamsjr; Jan 3, 2005 at 10:22 AM.
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