"Hutch mod" and biodiesel? - Ford Powerstroke Diesel Forum
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Old 05-31-2013, 07:09 AM
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"Hutch mod" and biodiesel?

I need to drop my fuel tank, and I was wondering whether doing the "Hutch mod" (disabling the mixing assembly inside the tank) makes sense while I have the tank down?

On the one hand, I can see why the modification is a good idea. On the other, maybe the mixing of (heated) return oil with the outgoing fuel may actually offer more benefits to the overall system than the potential drawbacks?

Anyone have real-world experience, or just some good insights?

For reference, the truck is a 2002, and I'm installing a regulated return system, if that has any bearing on the advice as to whether or not the tank modification is a good idea...
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Old 05-31-2013, 02:04 PM
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I run B100 in the midship tanks on both of my trucks, as well as in the heated second tank when needed.
I have done this done this mod on both of my trucks. I too debated if the heat transfer that could occur in the mixing chamber would pose.
Here was my thought, I would rather run 5% D2 if gelling would be occurring, vs dealing with those damn filter screens down in the tank. Once they become restrictive, It causes issues that might leave you scratching your head.

SO to summarize, I did both the Hutch and Harpoon on both of my trucks.
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Old 06-01-2013, 05:54 AM
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Any idea what the mesh or micron rating of those screens actually is? Seems like there should be some sort of protection before the pump, but I don't want to introduce excessive restriction on the suction side by using a filter, and there aren't many bio-rated filters available, anyway. Line strainers are easy to obtain, though, so if I know what the rating should be, I can probably match it...
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Old 06-04-2013, 09:09 AM
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Anyone? I have a 100-mesh line strainer sitting here, but I don't know how that compares to the in-tank filter screens.
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