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Fuel pre filter question.

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Old 02-13-2010, 06:33 PM
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Fuel pre filter question.

I am looking to put a Glacier Diesel fuel boss system on my truck. What would the experts recommend for a filter before the pump. I want to do it right and I hope this will be my last fuel system upgrade. Please give any info and links to items.
Thanks
Terry
Old 02-13-2010, 07:24 PM
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Options would range from the extreme (...ly expensive) to basic, depending on what you are trying to do with it. If I was spending that kind of coin to upgrade my fuel supply I would probably opt for a Davco 182 FW seperator or something like that. There's appropriately-sized inline screens available if you just want to ensure straining the big stuff from the pump. Almost limitless options in between.

Will this system maintain the stock filter?
Old 02-13-2010, 07:38 PM
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Just get the AirDog 150 and don't worry about the prefilter.
Old 02-13-2010, 07:56 PM
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I'm just looking for an affordable filtration system. I don't mind plumbing something up myself. I was just looking for info on a filter to have clean fuel before the pump. I will be retaining the stock filter for now. If it gets in the way later I will remove for a better system. I will check out the Davco. Thanks. I do not want an electric pump on my truck if I can help it. I hear of people having problems with even the most expensive pumps. At least with this system the stock pump still remains in place.
Old 02-13-2010, 08:13 PM
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The most important filter regardless of how many, or what orwellianian plumbing scheme you eventually come up with, is the last one before the injection pump. Make that a good one - 2um. There's presently a 3-filter series on our '07, retaining the stock cannister in the middle:

http://stuff.is-a-geek.net/PhotoAlbu...ics/CRD_28.JPG
http://stuff.is-a-geek.net/PhotoAlbu...ics/CRD_09.JPG

You can get those 1-14 filter heads with half inch ports from Airflo.com for like $25. There's an almost limitless selection of spin-on cans available for them including FW seperators in all sizes and micron ratings down to 2um.
Old 02-13-2010, 09:50 PM
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IMO yes a inline screen style so a certain micron would be important to the life of any pump. especially the bigger expensive pumps alone. I have a FASS 150 only the pump I run a napa gold inline fuel filter before the pump. now if your talking about the pumps that have the filters on the pumps the filtering and water seperating wouldnt worrie about it. but from my experience of taking off a old inline filter after 10k miles there is alot of crap in the screen that you can tap out of them. IMO yes that would be a great idea to do. I can get you the part# if you want. mine is for a 3/8 ID fuel hose.
Old 02-13-2010, 11:45 PM
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Ace thanks for the pics. Just what I was looking for. Dieselwrks, I would like the part# if you get a chance. I am willing to look at almost anything before I make up my mind (feeble as it is). Can I get those 2 or 10 micron filters at a NAPA or some truck shop?
Old 02-14-2010, 01:54 AM
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i have a MITUSA fuel pump system. it did not come with any filters. so i ordered this setup:
Perma Cool 2 Micron/FW Separator

the filter started leaking on me so i replaced it with a CAT 2 micron spin-on filter but retained the filter head.

this summer i will be buying two of the heads:
Perma Cool Filter Head

this will give me a total of three heads. right now i have the single head under the bed at the front left/driver corner just ahead of the rear wheel well. as the system is setup now, it goes tank-pump-CAT filter - stock canister - VP44

this summer i will be changing it up a bit to get a result as follows:
tank - 20 micron FW sep - 2 or 10 micron CAT filter - MITUSA Pump - 2 micron CAT filter - IP. the third/last filter down the line will be placed where the stock canister is currently sitting (i will have a bracket fabbed with a piece of 90* angle iron). i will take my FP reading from the spare 'out' port on this head

HTH. here are some pics of my current setup (except now running a big honkin CAT 2 micron filter)
Current filter location
in the linked pic you see the filter and head with an in/out fuel line. you can see the rear/lower of the cab, and the front mount of the driver side leaf spring - to give you a better idea of location. this summer i will simply be making a bracket out of flat steel with appropriately located holes to put another filter head in the same location.
Old 02-14-2010, 03:21 AM
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What fuel filter element do you use with a 3/4-16 thread spud? That size is typically a lube oil filter, not fuel. I'm sure there might be some out there, but your choices would be strictly limited, whereas the common fuel size fitting 1-14 has literally hundreds of various combination sized and rated fuel filters available.
Old 02-14-2010, 04:57 AM
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napa 3270
my set up is drawstraw to inline filter to fass150 pump them using oem filter to vp. 3/8ID hose.
hope this helps. this is also what has always been recommended by Fass. IMO if you go with a smaller micron filter before your pump you will make it work harder and you will have issues.
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Old 02-14-2010, 10:17 AM
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Originally Posted by wurkenman
I'm just looking for an affordable filtration system. I don't mind plumbing something up myself. I was just looking for info on a filter to have clean fuel before the pump. I will be retaining the stock filter for now. If it gets in the way later I will remove for a better system. I will check out the Davco. Thanks. I do not want an electric pump on my truck if I can help it. I hear of people having problems with even the most expensive pumps. At least with this system the stock pump still remains in place.
Terry - i put one on my 99 right in front of the tank it is a large element spin on with a water drain tap on the bottom of the element and has worked great for me so far. My thoughts with the element drain back there is if i ever suspect or have a problem out on the road i can check for water back there and also offer good protection for my lift pump just ahead of it (walbro 392).

The filters and the mount came from summit racing and were not very costly a few years ago when i bought them.

The brand name is perma cool the mount is nice and small and i have it bolted to the frame rail it has large ports for good flow and i keep a spare filter with me on board along with a stock filter as well.

I don't know the part numbers right now but if you need them let me know and i will get them for you. It has been on there for 3 years or more and has worked well for me.
Old 02-14-2010, 10:24 AM
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Terry - i just checked and it is the same one as the first link in the post from doj dewd. costs $40.00 for the kit and $15 for the replacement elements and the line ports are 1/2 inch. I don't think you can do it any cheaper.


I just looked at his mounting position and i myself would not put it there for two reasons it could be a dangerous fire hazard in a crash and a lot more line to run. I feed mine direct right from the tank (short straight run) and it is mounted inside the frame rail right on the frame rail (more solid) and affords better protection from impact in a crash.

Another thought my setup is lower so it is not pulling fuel up hill i can gravity purge the drain on the element or could even drain the tank if needed although it would sure be slow coming threw that little tap. Stuck out in the boonies it would work in a pinch.
Old 02-14-2010, 11:29 AM
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I use the FleetGuard FF5079 as a pre-pump screen filter. They're about $8 at any Cummins shop....
Old 02-15-2010, 01:49 AM
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Originally Posted by DIESELWRKS
. . . . . IMO if you go with a smaller micron filter before your pump you will make it work harder and you will have issues.
AFAIK with the mechanical fuel pump i am running - it doesn't matter what you put before it or after it for micron ratings - once it's primed it doesn't care, and it only has to prime once or with each filter change . . . . . you are correct though - when running electric pumps.

Originally Posted by rattlerbob5.9
I just looked at his mounting position and i myself would not put it there for two reasons it could be a dangerous fire hazard in a crash and a lot more line to run. I feed mine direct right from the tank (short straight run) and it is mounted inside the frame rail right on the frame rail (more solid) and affords better protection from impact in a crash.

Another thought my setup is lower so it is not pulling fuel up hill i can gravity purge the drain on the element or could even drain the tank if needed although it would sure be slow coming threw that little tap. Stuck out in the boonies it would work in a pinch.
what makes it more of a hazzard running it in this spot?

not really much extra line to run . . . 3/8 from the tank p/u to the filter head and then forward . . . might add 2-4' total - a strong pump should notice no difference.

my truck is a shortbed and getting it inside the frame rail with good protection would have been ALOT more work compared to the position i chose. one of the reasons i chose to mount it here is because it is up out of the way and no chance of anything hitting it while in motion (i have fenderwell liners), it was also very easy to drill the holes here with a 90*/tight quarters drill.

i agree with you though on the frame being a much more solid mounting position and the gravity feed aspect. on shortbeds though - the spot i chose is a very popular spot to mount airdog and fass systems . . . .

i am not arguing with you at all, just want to get your take on the reasons as i will be re-vamping the plumbing and adding additional filtration this summer and may end up moving things aroud if needed . . .
Old 02-15-2010, 09:15 AM
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Originally Posted by Doj Dewd
AFAIK with the mechanical fuel pump i am running - it doesn't matter what you put before it or after it for micron ratings - once it's primed it doesn't care, and it only has to prime once or with each filter change . . . . . you are correct though - when running electric pumps.



what makes it more of a hazzard running it in this spot?

not really much extra line to run . . . 3/8 from the tank p/u to the filter head and then forward . . . might add 2-4' total - a strong pump should notice no difference.

my truck is a shortbed and getting it inside the frame rail with good protection would have been ALOT more work compared to the position i chose. one of the reasons i chose to mount it here is because it is up out of the way and no chance of anything hitting it while in motion (i have fenderwell liners), it was also very easy to drill the holes here with a 90*/tight quarters drill.

i agree with you though on the frame being a much more solid mounting position and the gravity feed aspect. on shortbeds though - the spot i chose is a very popular spot to mount airdog and fass systems . . . .

i am not arguing with you at all, just want to get your take on the reasons as i will be re-vamping the plumbing and adding additional filtration this summer and may end up moving things aroud if needed . . .
Doj Dewd
My line of thinking on your setup was that if your truck was hit broadside your mounting location could become a fire hazard by knocking a hole in your filter or cutting the lines feeding it. Body sheet metal can rip and become a very sharp knife upon impact . Could be bad if you were hit just behind the cab on the box side.

At least we agree on the brand of filter mount

No problem here from me i did not take it that you were trying to argue with me and i hope you did not feel i was trying to cut you down before.

On any vp-44 fuel system i just think the shortest and most direct (least bends + fitings) makes the best end result. I have that filter as close to the tank as i could and 3" in front of that is my pump. My truck is a quad cab dually and i ran everything on the inside of the frame rail from the tank to the front. If you are not familiar with the walbro 392 pump it is an inline style that is compact about 2" in diameter and maybe 6" long so it does not take up much space i would think my setup would work for you on your short bed very easy. I carry a spare pump and filters so anyone with this setup could r+r it on their truck on the side of the road and not even need a jack on a 2wd just a few hand tools and be good to go in a few minuets.

I see you had a filter leak where was it leaking and what do you think was the cause of it ?


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