Building a better BHAF...

[Mundgyver]

What are the flow rates for the filter, for the 5. 9 and for the 7. 3

 

[Jeepmullet]

I just ordered a couple of these from DuluthDiesel... we'll see if they make my truck stand on end.

 

[WDaniels]

Has Hohn dropped out of the equation on his version of the Donaldson filter to be replaced by Duluth Diesels Amsoil version? I am interested in Hohn's version but would gladly use Amsoil's. Just curious.

WD

 

[CTD12V]

Has anyone been able to get any CFM flow data on the Amsoil SHAF yet?

 

[Duluth Diesel]

No we have not, but no one has mentioned flow issues, and most have noted a reduction in EGTs with this filter versus the paper BHAF.

 

[CTD12V]

No we have not, but no one has mentioned flow issues, and most have noted a reduction in EGTs with this filter versus the paper BHAF.

Cool. I was just curious how this filter compared to the 1000 cfm of Hohn's original "Better BHAF". Have you seen a drop in EGTs from this versus the Amsoil drop-in oiled filter?

 

[Duluth Diesel]

I haven't heard of anyone who switched from an old AMSOIL oiled one to the new Nanofiber ones. I have owned those old oiled ones in the past, and I wasn't too impressed. So I guess I have no info for you on that one.



-Chuck

 

[BILLVO]

I haven't heard of anyone who switched from an old AMSOIL oiled one to the new Nanofiber ones. I have owned those old oiled ones in the past, and I wasn't too impressed. So I guess I have no info for you on that one.



-Chuck

I tried to order one of the new amsoil filters on monday as I am an amsoil dealer also and they said that they were not available yet. Have you tried to order one yet?

 

[wildmanben]

They are on backorder, thats what I was told at the meeting in Witchita.

 

[CTD12V]

They are on backorder, thats what I was told at the meeting in Witchita.

Any estimates as to when they would be in supply again?

 

[Duluth Diesel]

I have not had an issue with the filters being out of stock yet, and I've been selling these since May. Hmm. Maybe only some of the AMSOIL distribution centers are backordered.

 

[Jeepmullet]

I have not had an issue with the filters being out of stock yet, and I've been selling these since May. Hmm. Maybe only some of the AMSOIL distribution centers are backordered.

Okay, I have a serious question about these filters. I've got 2 of them and am trying to run them both at the same time. Even on my small 225hp supercharged personal watercraft the difference between a 3. 5 and 4'' intake tube is 2lbs of boost and 200 rpm. How much difference is that restriction making in our trucks?

 

[Duluth Diesel]

Well, I have Nanofiber cone filters with a 6 inch flange opening if you want to play with one.

 

[Jeepmullet]

Well, I have Nanofiber cone filters with a 6 inch flange opening if you want to play with one.

Well ****e, why didnt you just say so?

 

[Duluth Diesel]

No one asked? There are larger Nanofiber filters than that 4090 now, but the flange is so large that we'd have to figure something out to fit it up. I'll have to pick up one of the big honkers and see what they look like. These just came out a little while ago, and I've handled a few of the new sizes over at AMSOIL Corporate HQ. I think the best option of the new filters is the 4510 which has a 4. 5 inch flange, is 10 inches tall (1 inch taller than the 4090), and is an oval cone, not round, for more surface area. It seems that all the 6" flange models are not as big as I'd hope. The largest 6 inch flange one is only 8 inches tall. Anyone have a CFM testing machine we can play with? Currently I'm running two 4560 filters on my truck with a PVC Y pipe. Just for fun.



I can get my hands on anything and take pictures. I'll try to get over there with my digital camera and handle one of these 4. 5 inch ovals and a 6 inch cone. Works good to have a TDR Cummins nut AMSOIL guy living in the same town as AMSOIL HQ, eh?

 

[CTD12V]

Works good to have a TDR Cummins nut AMSOIL guy living in the same town as AMSOIL HQ, eh?

Oh Yeah! :-laf Keep it up, Chuck! I'd love to see some CFM specs on these, just because I'm an inquiring sort of person. Actually, I am getting pretty close to ditching my oiled Amsoil filter. I looked at the first elbow in the intercooler duct below the turbo, and found it is pretty grimy, like old tack oil from an over-oiled filter I suppose the inside of my intercooler is all gunked up too--I haven't investigated further, yet.

 

[Duluth Diesel]

eek! Yeah I suppose it will get inside you intercooler and make as mess eventually. Shoot me a PM with you are sick of that oiled filter.

 

[CTD12V]

Thanks Chuck. I actually would be curious to try that six inch element you mentioned. Are all the flange measurements on these filters the exact measurement (ie--4", 6", etc. ) or are they slightly larger (4. 25", 6. 25", etc)? I am just wondering since I think the nominal designation for PVC pipe is ID, so with wall thickness a 4" PVC pipe actually needs a larger than 4" female opening (in this case the filter flange) to fit? Maybe I am all wrong? Let me know. Thanks!



CTD12V



Edit: Whoops, I guess that was the 4. 5" flange model you were "recommending". :-laf

 

[Duluth Diesel]

Yeah, you're thinking is right on the PVC being ID dimensions. The Nanofiber filter measurements are dead on, 4", 4. 5", or 6" inside diameter. The flange is soft rubber so it will deal with being a little off and still seal up well. There is one filter with a 4. 125" flange, but it really isn't that large. If you can get some PVC fitting to work, like a coupling that is make to fit inside a 6" ID pipe, so the coupling would be necked down to 6. 0 inches OD, it would work. A little backyard ingenuity sure beats spending 250+ bucks on a commercial system in my opinon.

 

[CTD12V]

Yeah, I agree. Have you actually fitted that 4. 5 inch filter into a 12-valve engine compartment, or is that still undetermined? What is the price on the 4. 5"?



Thanks



CTD12v