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Old 08-06-2004, 01:45 PM   #1
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Vegie oil fuel

I have ben reading some of the discussion about using vegie oil for fuel. Although i have not read everything, i have become curious about this topic.

How would you go about modifying an engine to run on this fuel ?

Could the engine be modified to run as duel fuel (diesel / vegie) switch able ?

How would you process the fuel ?

what about fuel storage in cold weather ?

Does anyone know of web links (vegie fuel info)
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Old 08-10-2004, 03:28 PM   #2
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Veggie oil

I'm only 13, but spend a lot of time online. There is a sight called http://www.greasecar.com that offers a conversion kit that comes with everything you need to filter the oil and run your engine from it. Also there is a switch that allows you to alternate from diesel to veggie. The kit cost $800 + $45 for shipping. I think that it's designed more for small cars, but they can custom make bigger tanks and components for you.

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Old 08-10-2004, 06:33 PM   #3
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there is no engine modification required to run veggie. There is just plumbing involved. Any non-computer controlled (any older diesel) will run just fine on veggie oil if the veggie oil is heated up first. heating is done utilizing engine coolant flowing through a heater core inside the veggie oil tank. Some injector pumps are better suited for WVO than others. Bosch inline pumps are among the best, rotory pumps like you find on most pick-up trucks are not really suitable for running wvo (depending on who you talk too)

There are valves that allow the driver to utilize either veggie or diesel at any time.

any more questions?
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Old 08-13-2004, 04:05 PM   #4
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Is it possible to change a rotary pump and put in a Bosch so that you can run veggie oil?
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Old 08-13-2004, 04:16 PM   #5
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that's not a feasable option. You'd be better off purchasing an engine with the correct pump.
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Old 08-13-2004, 04:29 PM   #6
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so what is the arguments for and against rotary pumps? Is it possible and inefficient or just bad for the engine?
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Old 08-13-2004, 06:59 PM   #7
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I'm not a diesel mechanic, from what i've read, here is the biggest difference between the two differenty types of injector pumps:

Bosch Inline pumps tend to be lubricated with pressurized engine oil from the engine oil pump and have an excellent reputation with WVO.

Rotory pumps are lubricated with diesel fuel, or in our case WVO (waste veggie oil). There is great discussion as to why they fail prematurely on wvo, mostly becuase veggie oil is a good lubricant. Diesel fuel is more of a solvent. From what i understand, there are some small lubrication passeges inside the rotory pump and even at 180 degrees F the veggie oil is just too thick to pass through the lubrication passages causing the pump to heat up and fail.

An engine with a rotory pump will run on wvo. Do some more research and you'll find examples of people who run WVO in engines with rotory pumps and have had no problems. Others claim that purchasing a new injector pump ever couple of years is far cheaper than purchasing diesel fuel.

Don't let anybody tell you that you CANT do something, just be prepared to accept the risks.
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Old 08-26-2004, 09:01 PM   #8
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Veggie fuel in a DT360

Has anyone used wvo in any international diesels? I'm still looking for a bus that fits my budget, or lack thereof, so before I buy the possibility of using veggie fuel may affect the final purchase.
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Old 09-12-2004, 08:01 PM   #9
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The site for info is http://www.veggievan.com They sell an excellent book that explains everything.I converted my VW golf with a rotary pump and ran on waste veg oil for over a year,until the suspension failed!
All the bugs are easy to work out over time.I biult my tank and all the plumbing from readily available materials.And yes the oil is free,a whole year of buying almost no diesel fuel.
The oil is disgusting to work with though.I left steel 20 litre barrels at my
participating restaurants,when they were full I heated the oil up with a coleman stove and puored it through a straining medium.Very messy and time consuming.
I would like to convert a school bus but it would take forever to fill the tank and once you are on the road getting to a restaurant at the exact time they empty the fryers is a long shot.In that case you run on regular fuel.
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Old 09-30-2004, 02:40 PM   #10
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when we converted our bus. we have a two fuel system. we use a seperate fuel filter (heated) and a holley pump to pump the oil. we switch over just before the injection lift pump, and also use a bypass valve to recirculate the oil as you DO NOT want the veggie oil to circulate back to your tank. as was stated before computer op diesel might be difficult, and apparently turbo chargers are bad to.
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