Bhaf II ??

[Ncostello]

I saw an air filter in the Napa catalog today that was sort of interesting. It was the 6469. (A-116 series). It was a cylinder shaped unit very similar to the BHAF. But with a twist.



The overall height (or length) was 11. 880", same as the Napa BHAF. The OD was 10. 500", same as the Napa BHAF. And it had a 4" hose connection, same as the Napa BHAF.



Well, what is the difference you may ask???



The filter is fully contained in a metal housing (cylindrical). So the filter inside it must be slightly smaller than a BHAF if the outside dimensions of this metal housing/filter combo is the same as the BHAF filter itself.



This unit is identical to the throw-away units on our ISC 330 powered fire engine... only smaller. Ours for this rig are $190 each.



I'll try to explain it best I can. Imagine a BHAF within a metal cannister. The turbo hose hooks up to same location as a BHAF. The air comes in through another 4" round opening on the side of the cannister. It says you can hook up the turbo hose to either opening. Flows both ways. Both openings are 4" diameter metal tubes.



Looks like a 10. 5" round muffler with the outlet on the side.



Only thing is though, I have no idea what it would flow. Cost = $48

 

[Sky]

Hmmm lets try to get some pics.

 

[Ncostello]

They guys at Napa are cool. They will probably order one for me to look at, then I can take the digital camera and snap a few picks. I might just buy it to try it out. I should flow more than stock since there is more filter area and the stock box has a somewhat small opening in its side.

 

[Gizmo 007]

I actually had a chance to test one. I got it from TractorNut. With a little modification (larger hole in the side) it could work for lower powered trucks. The filter element is a lot smaller in diameter than the BHAF.



I managed to suck it flat with my truck. We could actually hear the case collapse against the filter as I floored it . EGTs were through the roof! That is just what I got from the test. Others may have better results. I just tested the filter without modifying the hole.



MHO: I think I'll stick with my $40 BHAF.

 

[MCummings]

Originally posted by Gizmo 007

I actually had a chance to test one. I got it from TractorNut. With a little modification (larger hole in the side) it could work for lower powered trucks. The filter element is a lot smaller in diameter than the BHAF.



I managed to suck it flat with my truck. We could actually hear the case collapse against the filter as I floored it . EGTs were through the roof! That is just what I got from the test. Others may have better results. I just tested the filter without modifying the hole.



MHO: I think I'll stick with my $40 BHAF.

Giz,, I tried replacing my BHAF with a filter that had a plastic housing around it, and only a 3" hole in the side. I pointed the hole to the oval hole meant originally for the OE Air Filter.



Well, I went for a test drive,, and I went WOT,, watched the boost gauged,, got to about 15 pounds, and heard a "WHUMP", truck slowed down, boost fell, and EGT climbed QUICK. Opened the hood and found my $35 filter to be in a shape similar to a crushed aluminum soda can.



The best BHAF out there is the BHAF with the metal mesh around the outside.



Merrick Cummings Jr