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post #1 of 2 (permalink) Old 06-04-2005, 10:24 PM Thread Starter
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Inline fuel heater

I've been wanting to run WVO in my truck but I've been too busy with other things to even begin. Today I was servicing a semi truck at work and noticed it used a large coolant filled inline fuel heater. It was about 6 inches in diameter and 12 inches tall. I was wondering if it would be possible to mount one of these near the engine, as close to the injector pump as possible and be able to eliminate the tank heater? I never drive this truck in the winter, its usually at least 60 degrees or warmer out whenever I drive it and most of my driving is back and forth to work, so with a large tank and heater it would take longer to heat the oil than it would to drive to work. Is it possible to use only an inline heater and maybe heat the lines between the heater and injector pump? I would think one of these would heat up pretty fast, but would it heat the oil quickly enough before it is pumped back out to the injector pump? I'm just trying to simplify things and since I don't use the truck when its cold out I was wondering if this would work, or do I still need to heat the tank?
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post #2 of 2 (permalink) Old 06-04-2005, 11:20 PM
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Re: Inline fuel heater

The concerns are you want the oil hot, preferably above 150 degrees F.
You also need it heated enough in the lines so it pumps easily. The tank doesn't have to be heated if you are running pure vegetable oil. Unfortunatly most waste oil sources will have some animal fat in them, so if you don't get some heat to the tank it may clog the lines over time. If I were going to try what you're suggesting, I would probably run the heater hose along the fuel line down to near the tank, and mount the heated filter there. Have the tank gravity feed into the filter, and also run the heater hose along the fuel line up to where it comes out of the tank. Enclose all the heated lines in pipe insulation. May work if you can get the oil hot enough.
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