I'm looking for a 12 volt pump that can handle the viscosity of cold vegoil. Any ideas?
I plan to have a storage tank in the trunk and a smaller tank built into the engine comparment that will be the supply for the engine. This way all heating can take place in the engine comparment and I won't have to plumb coolant lines all the way to the trunk. Also, the 'looped' return can go to the forward tank (I suppose this wouldn't be looped per se) which should eliminate any trapped air issues.
I plan to build an automated on-off system that can turn the supply pump on and off as the smaller engine compartment tank needs it.
I remember a year or so ago, someone on this forum set up there car with a system similar to this. I have been unable to search and find it. Anyone know who this was?
Thanks
RayRay

Oh yea, I should have mentioned...

that I already use a red Fill-Rite 12 volt pump for my oil collection. It works great- never had a problem with it pumping cold oil, even in winter.
I suppose this would work for my in-car needs, but seems to be a bit overkill. It would be a bit too loud, it is kind of big in size, and it pumps oil faster than would be neccessary.
What I am invisioning is something more like a Holley or Walbro fuel pump that could handle cold oil.
Any ideas?
Thanks

I hope someone can come reccomend something!!! I have asked this question before and the usualy end is that no such thing exist.

I also have tried electric fuel pumps, a Holley Blue and a Chinese copy. Both of these have difficulty even with 30°C canola sourced used vegetable oil.
I am currently using a Holley Blue with a 50% vegoil and biodiesel blend (BV 50/50) and it seems to be somewhat hit and miss with pumping it. Sometimes I have 0 psi, other times I have 10 psi

I have a small gear pump and am hoping to find a gearbox to allow it to be driven by a windscreen wiper motor at say 20 - 50 rpm. I believe that this will provide sufficient flow for my 300D, but will need to test it once I have a gearbox lined up. - Perhaps I can do something with a wiper motor gearbox - Hmmm.

I have completed the conversion on my latest Mercedes vehicle. A 280E fitted with a 300D engine. I am using 2, 6 port valves to switch the Fuel Pump and injector pump to the vegoil or diesel tank, filter and return lines respectively. A 10 plate FPHE is included as is a heat exchanger for the veggie filter and tank, with the veggie fuel lines being as HOH.

Hi fellas,
The problem wirh the Holley and Wabro / Carter FP's is that they are Vane pumps... and thick veg seems to hang up the vanes in the slot on the drive hub whick keeps the vanes from keeping in contact with the outside wall of the pump.. Gear pumps (like those used for home heating and steam cleaners, usually sunsrand) work well on cold veg.. I made one and drove it with a benz fan motor.. but the issue with these pumps is that they are a fixed displacement... there is an internal reliefe valve that can be used to limit pressure but a softer spring is needed to do this.. If it to be used as the supply for the engine IMO the utopian FP would be a gear pump that limits pressure by slowing the drive motor.. a PWM and analog controller comes to mind.. I have also thought about using vacuum to drive a slow running piston pump.. the vacuum would limit pressure. The Cater solanoids work well if the VO has been warmed a bit.. but they preform poorly if the VO is cold.. Anyhow I think most of us agree that a porpose built VO FP needs to be built...

Can a pump from a petrol car (like a 260e, 300e) handle cold vo?

Actually, I would be fine with a fixed displacement pump. I intend to use a second, smaller tank in the engine compartment for supplying the IP as it needs. That would cover varying fuel volume needs for the IP.
The cold oil pump would only turn on for short periods to refill the smaller tank up front.
I will build a circuit that turns on when the fuel level in the smaller tank reaches 1/3 full and turn off when it reaches ~nearly~ full. Thus, the actual, exact rate of flow through the pump is not too important as long as it is reasonable.
I'm thinking that a 1.5 gallon tank would be all that is needed up front. My Quantum gets about 40MPG. The pump will need to pump about 1 gallon each time it comes on. So at most the pump will come on once every half hour. The pump that I use for oil collection- http://www.pumpbiz.com/products/index.cfm?fuseaction=pu...=12928&series_id=889
pumps about 7 GPM. Thus it would stay on only for 10 seconds.
I guess it could work. I'm just hoping for something a little bit cheaper (I think it cost $150+) less noisy and a bit less bulky.
In that case, should I be searching for gear pumps only? Or, gear and eccentric pumps (as is the above pump)? What exactly is an eccentric pump anyhow? From the info I've found they seem to be self-priming, which would be nice for this application, but not neccessary.
Any other thoughts? Thanks
RayRay

From my testing it takes a gear pump with big internal lobe displacement turning slowly to efficiently move realy cold oil, an older chrysler engine oil gearotor pump is my choice, about $20.00 new. If you are handy at building or modifying stuff you might be interested in building a 12 volt motor driven engine oil gear pump, I use one of these as a cold oil transfer pump, the volume they move can be controled by the motor speed being controled by applying less than 12 volts.

I am building one of these just now to be the fuel pump for my 100 gallon second heated-tank setup for my dodge cummins. The intent is to
control the motor speed from a pressure sensor just before the injection pump, this should give a fairly constant supply pressure at any oil temp or engine speed or load, thats the idea anyway.

Read through this past pump discussion for info about what some of us have done with engine oil pumps, discussion about engine oil pumps starts in earnest on the second page.

Tim - Got any ideas for cheap and easy to find motors for the automotive oil pumps ?

quote:

Originally posted by Tim c cook:
From my testing it takes a gear pump with big internal lobe displacement turning slowly to efficiently move realy cold oil, an older chrysler engine oil gearotor pump is my choice, about $20.00 new. If you are handy at building or modifying stuff you might be interested in building a 12 volt motor driven engine oil gear pump, I use one of these as a cold oil transfer pump, the volume they move can be controled by the motor speed being controled by applying less than 12 volts.

I am building one of these just now to be the fuel pump for my 100 gallon second heated-tank setup for my dodge cummins. The intent is to
control the motor speed from a pressure sensor just before the injection pump, this should give a fairly constant supply pressure at any oil temp or engine speed or load, thats the idea anyway.

Read through this past pump discussion for info about what some of us have done with engine oil pumps, discussion about engine oil pumps starts in earnest on the second page.

i'm doin something sorta similar preprocessing on the fly. i purchased a flo jet pump and it works great. they are diaphram pumps and will draw a vaccum, don't mind running dry, relatively inexpensive. i'm really happy with it. this is the one i have

http://www.mytscstore.com/detail.asp?pcID=4&paID=1034&s...age=1&productID=1013

here is a less expensive one that may work well, but have no experience with it.

http://www.mytscstore.com/detail.asp?pcID=4&paID=1034&s...age=1&productID=1916

pat

I am using the motors from kids sidewalk scooters like the one in this Ebay sale. They are 1/3 HP when powered by 24 volts but are about 1/8 HP on 12 volts. They are about the size of a flat sided softball.

The ones I am using turn at about 1000 RPM at 12 volts with gobs of torque. Even if these get jammed to a standstill it would take a long time to cause any permanent damage from heat.

I use 12 volt shurflo pumps exclusivly as circulating pumps on my filter setup and flesh evaporator.They don't move cold oil all that well due to the internal diaphragms flexing because the oil is harder to suck than the water they are designed for but they move warm oil just fine but only at a 1/4 of there advertised water flowrate. The filter pump runs for at least 72 hours continuously at over 100 deg f, works great. The pump on the flash evaporator runs for about 10 hours continuously at 150 pounds pressure, also works great.

Someone else here was using one for veg fuel pump, problem has to due with them being a high pressure pump, even the ones with an internal pressure regulator is set for 35 pounds, could be made to work if using an external pressure sensor and some sort of motor speed control electronics.

Has anyone tried the Mallory 140. This is a gerator type gear pump. I think it was Fattywagon that mentioned this pump in another post, in any case my two facet pumps work well enough with clean (no fats) vege oil; however, as the fat level increases the IP starves. In anycase as a gear pump the Mallory 140 looks worth a try and I would appreciate any input before I commit to buy.
GraemeW

That would be me using it as a fuel pump. It's a hack job but the thing is still working. Cool part is my pump can handle cold thick WVO!
Still using the windshield wiper motor to drive it.
Will work on improving my design "at some point", but the gero pump is a real cool design and its amazing how the internet works. Tim told me about this pump back when we I started the thread that he mentions above, and I built my creation. Then one of us finds the Mallory gero and start talking about it, and now I see Chris at Frybrid is recommending it.
Dave

quote:

Originally posted by asnowquall:
That would be me using it as a fuel pump....
Dave

Since you didn't quote a thread; to avoid assuming. Which "it" are you using as a fuel pump?

quote:

Originally posted by Tim c cook:
Someone else here was using one for veg fuel pump, problem has to due with them being a high pressure pump, even the ones with an internal pressure regulator is set for 35 pounds, could be made to work if using an external pressure sensor and some sort of motor speed control electronics.

Sorry for any confusion, but its me using the Chrysler gearotor pump as a fuel pump for the WVO in my 1997 Suburban.

Dave do you have any pictures of this pump configuration? I have used the "Blue" and both Stock and Knock off Fuel pumps for the 6.5 to no success.

The best I can do for now is you'll have to read through this post here.
If someone wants to duplicate you really need a welder, time, and time to tinker. Or just check out the Mallory Gearotor pump.
Dave

I have been hoping to pick up a Mallory gearotor pump from ebay, been watching them for months, New and used ones keep showing up daily but go for more than I am willing to pay for a test ($70 to $250, sometimes more than new price). These pumps are listed as being "gasoline only", not even listed for diesel. A bit concerned about the size of the electric motors, the pumps are available in many G/M sizes, from 70 to 250, the smaller G/M units appear to have smaller motors, don't know if they would overheat if overloaded with thick oil or not. The larger flow rate motors draw a lot of power that is being wasted bypassing most of the oil for our application.

I think the "gearotor" is the best style of pump for oil, works fine for chrysler moving engine lube oil at all temps. I would think the Mallory would do a fine job as long as the oil is at least warm but I don't want to pay these prices to confirm that, may want to open up the diameters of the internal flow passages to help flow thicker veg ?