WVO fuel line lengths/ WVO fuel return
January 3, 2005 - 4:01pm
My WVO lines that run from the veggie oil filter to the solenoid have ended up being a bit long (4 feet?) because there wasn't any room for the filter in the same place as the other fuel lines hook up, they had to run from one side of the engine to the other.
I haven't run the car on WVO yet because I'm not sure the WVO within that four foot distance will remain solid.
Does the WVO "return" all the way to the WVO tank upon switching back to diesel or does it sit in the line just short of the solenoid, waiting for the WVO switch to be hit again?
Any info is appreciated.
Thanks,
Dan
'76 300D
January 4, 2005 - 6:24am
#2
The filter is heated with the greasecar copper coils.
What is the HOH systen?
My car's a 1976 300D Mercedes.
January 4, 2005 - 7:54am
#3
Is your filter in an unexposed spot? If the filter stays hot then you may not have a problem with the longer hose distances. I would wrap the hose with insulation just to be safe. Someone posted somewhere on this board how much temp is lost per foot of hose, but I don't remember how much.
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1999 Dodge 3500 Dually, Cummins 5.9, EDGE EZ, 4" exhaust turbo back.
January 4, 2005 - 6:06pm
#4
HOH is the safe alternative to HIH just bundell your coolant lines with your vo lines and insulate it makes it bigger but there is no chance of your coolant mixing with your fuel .............Scarry!!
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January 4, 2005 - 7:26pm
#5
I think what Cocoa is asking is...
HOH = Hose on hose (or hose next to hose)
HIH = Hose in Hose
One hose is the fuel, the other is the coolant.
Bill
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One day this will all make sense... God help us on that day.
January 4, 2005 - 9:30pm
#6
Cocoa,
I'm not sure what the real risk of Hose-In-Hose is. The fittings are pretty standard -- I've been using Greasecar's Hose-In-Hose system. It seems to me that the heat transfer from the coolant to the fuel line must be better with the HIH vs. HOH.
Insulating the coolant line between the engine and the copper-coiled filter heater is a very good thing. I have about 4' of coolant line between where I T'd into the heater hose and my filter. The average temperature I was getting in the copper coils was about 150-160. I put pipe insulation around that 4' length of coolant line, I wrapped the filter with a thin layer (1/8") of neoprene rubber, I put some neoprene around the top of the copper coils, I covered the whole filter/valve setup with a layer of closed-cell foam. The end result was 15-20 degrees hotter temperatures in the filter. Total cost was about $4. Insulating everything is definitely worthwhile.
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Brian
vw.ourwebstop.com
January 5, 2005 - 8:41am
#7
With HIH there is a posibility of loose or damiged fittings and a kinked fuel line if installed incorrectly. With HOH there is no chance I just like to keep it simple and you don't need the couple of extra degrease if you are using a electric in-line fuel heater like The Veg-therm.
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Drive for free-Check out enviofuel.com
January 10, 2005 - 6:58pm
#8
Hello, I am thinking of geting a 70's crown diesel bus . What id like to know is if anyone has gotten a detroit diesel 6-71 or the cummins 220 engines to run on vegi oil, for how long, and what were the problems that needed to be overcome.I would appreciate any input available, Thank you so much
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stoney
January 10, 2005 - 8:16pm
#9
I work around the 6v71 At school and we had it running on bio for a while on the dino and it did great the only thing I would worry about on that beast is the amount of fuel it demands If you can keep up with the fuel and keep it at 180 then there should be no problems I would use The Davco 234 plus (tall cover) and the MEga Veg-therm to ensure the flow at the rite temp and a HOH for the fuel lines. If you need help let me know! nate@enviofuel.com
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Drive for free-Check out enviofuel.com
March 27, 2005 - 9:38am
#10
Quote:
Originally posted by: ourwebstop
Cocoa,
I'm not sure what the real risk of Hose-In-Hose is. The fittings are pretty standard -- I've been using Greasecar's Hose-In-Hose system. It seems to me that the heat transfer from the coolant to the fuel line must be better with the HIH vs. HOH.
Insulating the coolant line between the engine and the copper-coiled filter heater is a very good thing. I have about 4' of coolant line between where I T'd into the heater hose and my filter. The average temperature I was getting in the copper coils was about 150-160. I put pipe insulation around that 4' length of coolant line, I wrapped the filter with a thin layer (1/8") of neoprene rubber, I put some neoprene around the top of the copper coils, I covered the whole filter/valve setup with a layer of closed-cell foam. The end result was 15-20 degrees hotter temperatures in the filter. Total cost was about $4. Insulating everything is definitely worthwhile.
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Brian
vw.ourwebstop.com
Does anyone know if the Hose in hose straight and Tee fittings that Greasecar uses are standard off the shelf from a good plumbing supply house? If so, what is the exact name of the fittings? I assume they are compression fittings.
March 27, 2005 - 6:05pm
#11
are they using Cajon or Swagelok brand fittings? BIG $$ but nice fittings.
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It doesent matter were the veg filter is as long as the selonoid valve is close to the Injection pump and it all stays warm. The only reason for the close mounting of the selonoid valve is a quick switch over time. The oil will not gell up in four feet, or pass through the filter for that matter unless it's already warm. The return line stays full of veg oil all the time. A HOH system helps because the fuel stays warm all the time. What car are you converting and how is your filter heated?
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