veg oil
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You'd be better asking someone who's run it, like Fordnut74 up there a few posts. It's a viscosity issue, not a gel point issue, so I think we're talking fairly high temps to get it to flow right in a stock diesel system, quite a bit above ambient temps anywhere. You could certainly make a system that would work right without heating the oil (basically larger orifices everywhere) but then it wouldn't work on normal diesel.
To give you an idea of what you're up against, here is a picture of the tip of a 6.0L injector: http://www.backglass.org/duncan/injector/injector_tip_1.jpg
Duncan
To give you an idea of what you're up against, here is a picture of the tip of a 6.0L injector: http://www.backglass.org/duncan/injector/injector_tip_1.jpg
Duncan
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Joined: Aug 2002
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From: Lake Stevens, WA
I haven't blown you guys off, just buisy. i am going to answer the questions for the Mixing SVO with Diesel thread here as well.
On the viscosity issue, the problem is in the filtering, not the injectors as one would think. Veg Oil is about the same viscosity as diesel at 180*. Of course this varies depending on how dirty the oil is, how much it was used, what type it is, water content, etc. Since the fuel rails are actually part of the head, once the fuel passes the the filter and enters the rail, it WILL be at engine temp, and since the injector tip is in the cylinder, the tip will be much higher. The only time it would cause a problem in the injectors is on a cold start for about the first 10 seconds. I have found that the oil needs to be at about 110* to pass through the filter without waxing it up. Using My Large filter above the exhaust manifold, it is able to pass enough oil, cold that the engine can warm up before waxing up to the point that it becomes plugged. Hope this helps, again any other ? pleas ask, just may take me a few days to respond. The Diesel Stop alternative fuels forum is a great resource with info and links to other useful sites such as greasel.com.
On the viscosity issue, the problem is in the filtering, not the injectors as one would think. Veg Oil is about the same viscosity as diesel at 180*. Of course this varies depending on how dirty the oil is, how much it was used, what type it is, water content, etc. Since the fuel rails are actually part of the head, once the fuel passes the the filter and enters the rail, it WILL be at engine temp, and since the injector tip is in the cylinder, the tip will be much higher. The only time it would cause a problem in the injectors is on a cold start for about the first 10 seconds. I have found that the oil needs to be at about 110* to pass through the filter without waxing it up. Using My Large filter above the exhaust manifold, it is able to pass enough oil, cold that the engine can warm up before waxing up to the point that it becomes plugged. Hope this helps, again any other ? pleas ask, just may take me a few days to respond. The Diesel Stop alternative fuels forum is a great resource with info and links to other useful sites such as greasel.com.
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From: NW Montana
Originally Posted by Frobozz
If people could get past the Matrix-like overtones of "humans as power source" it certainly makes more sense than using up lots of ever-scarcer good land to plant them...
Duncan
Duncan
NOOOOOOOOOOOOOOOOOOOO 
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From: Marengo, Iowa
a little test I did also presents another problem. I used new veggie oil with a littl diesel in it, and it grew algae in it like you wouldn't believe, so mixing and sitting for much length of time, or just mixing may present an algae in the tank problem.
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journytoforever.org/boidesiel_svo.html has a lot of info on running waste veggie oil.
As for mixing the problem would be that like oil and water the oil would seperate from the diesel unless there is a catalyst to stop it, I personally do not know of one. Then you are left running diesel and veggie oil, not the mix.
As for mixing the problem would be that like oil and water the oil would seperate from the diesel unless there is a catalyst to stop it, I personally do not know of one. Then you are left running diesel and veggie oil, not the mix.
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From: Joliet, Illinois
The only reason biodiesel costs more is that the volume is so small, like making a billet crankshaft one at a time compared to an up and running factory making thousands.
But taking that in to count, biodiesel is only $3 a gallon?
If we were a Biodiesel using world and wanted to try and process Dino Diesel in small batches, I would think it would cost hundreds of dollars a gallon, if not thousands.
The US dollar is supposed to be supported by petrolium sales throughout the world, so we cant have biodiesel take over as quickly as it would seem we (the world) need to as it would hurt our economy.
Also, the straight oil is much too thick cold to work in stock injectors, but I have met some at a biomeet in Berkeley who use modified injectors and filters to work with cold oil straight, no processing needed.
And if the biodiesel is processed wrong, who knows how bad it might run in your truck.
But taking that in to count, biodiesel is only $3 a gallon?
If we were a Biodiesel using world and wanted to try and process Dino Diesel in small batches, I would think it would cost hundreds of dollars a gallon, if not thousands.
The US dollar is supposed to be supported by petrolium sales throughout the world, so we cant have biodiesel take over as quickly as it would seem we (the world) need to as it would hurt our economy.
Also, the straight oil is much too thick cold to work in stock injectors, but I have met some at a biomeet in Berkeley who use modified injectors and filters to work with cold oil straight, no processing needed.
And if the biodiesel is processed wrong, who knows how bad it might run in your truck.
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