Pre-Pump Filter
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Elder User
Joined: Mar 2006
Posts: 751
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From: Greeneville,TN
Pre-Pump Filter
I am trying to round up supplies for my Hutch mod. I was just wondering how many of you are running a pre-pump filter. I am just wondering if it is necessary to run one since you remove the screen on the bottom of the pickup. What brands and where can I find a good price on them. Also what size of fitting do I need on the inlet side of the fuel pump. Thanks for all your help. These mods getting addictive.
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
I talked to Guzzle and this is what he said
This is the message:
The reason I used a Racor is because I found one pretty cheap on eBay. It is a discontinued model but worked great until I installed the lift pump. Recently it began showing some fuel seepage around the primer valve. Not much but it appears as if the Racor, unlike the Dahl, can't handle the 7 psi from the lift pump. I will continue to use it until I use up the remaining filter elements I have and then change to a Dahl 100 unit.
Most all of the Racor filters that are for marine usage come with a metal bowl rather than the yellow plastic (another reason I bought it). The 230 or 245 would work fine for our trucks unless you go all out with large injectors and big oil and then the flow may suffer. I would opt for the 245 if you go that direction as its only slightly taller than the 230.
The Racor units are cheaper than the Dahl but their filter elements are much more pricey. With that, the Dahl may be less expensive in the long run if you keep your truck as long as I plan on having mine.</pre>
This is the message:
The reason I used a Racor is because I found one pretty cheap on eBay. It is a discontinued model but worked great until I installed the lift pump. Recently it began showing some fuel seepage around the primer valve. Not much but it appears as if the Racor, unlike the Dahl, can't handle the 7 psi from the lift pump. I will continue to use it until I use up the remaining filter elements I have and then change to a Dahl 100 unit.
Most all of the Racor filters that are for marine usage come with a metal bowl rather than the yellow plastic (another reason I bought it). The 230 or 245 would work fine for our trucks unless you go all out with large injectors and big oil and then the flow may suffer. I would opt for the 245 if you go that direction as its only slightly taller than the 230.
The Racor units are cheaper than the Dahl but their filter elements are much more pricey. With that, the Dahl may be less expensive in the long run if you keep your truck as long as I plan on having mine.</pre>
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by jrciii56
I am trying to round up supplies for my Hutch mod. I was just wondering how many of you are running a pre-pump filter. I am just wondering if it is necessary to run one since you remove the screen on the bottom of the pickup.
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Elder User
Joined: Mar 2006
Posts: 751
Likes: 0
From: Greeneville,TN
I have thought about it, but I still haven't made my mind up yet. If I go with a heavy duty pre-filter I probably will, but if not I won't. I have done a bunch of mods here lately and it is hitting the wallet pretty hard. I have seen a picture on here, where somebody put a small filter in front of the pre-pump. I may just go with a set up that will just include that small filter then the pump. I am trying to get bunch done to maximize my DP-Tuner that is scheduled to be up in by Jody on the 23.
Fleet Mechanic
Joined: Feb 2005
Posts: 1,797
Likes: 1
From: Northern Colorado
Originally Posted by Tenn01PSD350
I thought the pickup foot and screen were re-used in this mod. If I am not mistaken, it is the mixing chamber that is removed and then the pickup is reattached to be located at the same height as it was with the mixing chamber in order for proper clearance at the bottom of the tank.
Removal of the mixing valve is one of the steps for the hutch mod and seems to be one of the culprits for allowing air into the system.
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Post Fiend
Joined: Jul 2005
Posts: 14,582
Likes: 12
From: 21791
i do have a lift pump and a dahl 150 filter before the main pump. i have the Carter 4070 pump first, then the Dahl, then the main pump. the dahl works for it's intended purpose. i cant say much more as it just sit under the truck, i cant tell a performance or sound difference, but i know it's working. the Carter pump however, i can tell it's working. it is one loud SOB that sounds like a bunch of hornet nests under my truck when it's pumping with the key on before i start it. even with the sound of the engine i can still hear it if i bend over near my fuel door.
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Elder User
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From: LAKE FORK TEXAS
Post Fiend
Joined: Jul 2005
Posts: 14,582
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From: 21791
Originally Posted by Fat Diesel
I put a Dahl with a vacuum gauge setup to let me know when to change the filter element. I also used a "Full-Flow" valve to let me turn it off for service.
Logistics Pro
Joined: Aug 2005
Posts: 3,884
Likes: 180
From: Morgan Hill, CA
Of course there is a need for another gauge... I saw how you did yours, but I was under the impression that the Dahl was designed to work under vacuum. Is it rated for pressurized duty as well? When my Dahl got plugged up the fuel pump started sounding like the buzzing bees and I looked at the gauge and it was way up there, above 15". Changed the filter and it dropped back to around 3" of mercury.
Post Fiend
Joined: Jul 2005
Posts: 14,582
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From: 21791
i dont really know if it is. i dont think there is anywhere on the directions that say NOT to run it under pressure. i could swap it around to the filter then the pump, then the main pump, however the point was to get the pump as close to the tank as possible i was told. there is a haze of fuel covering the lower half. im guessing it's from the really slow leak i have from one of the ports, there were no fittings included so i had to find a close flare thread and then use several o-rings and thread tape to seal it up, but it still has a tiny bead of fuel at the lowest point of the hose. i guess the road wind blows the fuel around and it sticks to the canister.here is the setup- http://rides.webshots.com/photo/5520...91838520OnFzvE
Fleet Mechanic
Joined: May 2005
Posts: 1,567
Likes: 3
From: Chattanooga
Just put a hose and a hose clamp over it. I went to tractor supply store (TSC) and purchased the filter housing and filter for around 30 bucks. Large spin on filters are around 10 or less from carquest. Carquest also sells these setups.