New air filter system?
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by NS F250
Ernest, I just noticed in one of your posts (the one that shows the airflow data on the different filters), that the stock 6 liter box is much less restrictive than the 7.3 ais. Has anyone looked at using the 6 liter box on the 7.3? Granted, It's been a while since I looked uner the hood of a 6 oh, so I have no idea what the 6 uhoh box looks like.
Makes me want to question those numbers.
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Postmaster
Joined: Jun 2006
Posts: 2,647
Likes: 0
From: Fulltime RVer
Originally Posted by NS F250
Ernest, I just noticed in one of your posts (the one that shows the airflow data on the different filters), that the stock 6 liter box is much less restrictive than the 7.3 ais. Has anyone looked at using the 6 liter box on the 7.3? Granted, It's been a while since I looked uner the hood of a 6 oh, so I have no idea what the 6 uhoh box looks like.
The 6.0L AIS element is made from the exact same material as is the 7.3L AIS element. The reason the 6.0L has less restriction than the 7.3L is discussed at length in the link above. Here's another link below. Basically, the restriction of an AIS depends on the entire volume of the element, not just on the transverse surface area like for a conventional filter, and the 6.0L has a larger volume element.
http://www.donaldson.com/en/about/news/005525.html
This corrugated media is constructed by layering alternating rows of flat sheet and corrugated media.The result is a dense, honeycomb-like structure of filter media. The resulting media pack consists of parallel rows of flutes that are open at only one end. To create a filter from this media pack, the ends of the flutes are sealed at alternating ends with an adhesive bead. This bead of adhesive creates a barrier to air on the upstream side of alternating flutes within the media pack, and a corresponding barrier on the adjacent flute at the downstream end. The result is that when placed in an air stream, the air is allowed to enter half of the flute chambers on the upstream side of the media pack, but blocked from exiting those flute chambers on the downstream side. Because of the permeable nature of filter media, the airflow passes through the media fibers and gets cleaned. Once in the adjacent chamber, it exits on the open downstream end and is directed to the turbo inlet.
Postmaster
Joined: Jun 2006
Posts: 2,647
Likes: 0
From: Fulltime RVer
Originally Posted by Tenn01PSD350
... That just doesn't make any kind of sense whatsoever to me unless it can be explained by the larger dispacement/volume demanded by the 7.3 but that doesn't bear out either because the rating of the 6.0 is at a higher CFM. Makes no sense to me with the same type filter media.
Makes me want to question those numbers.
Makes me want to question those numbers.
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trucker01
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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May 10, 2014 09:23 PM
