converter help!!!

[charger0926]

i am wanting to hook up a 12 volt electric fuel pump to siphon out fuel from my snowmobile gas tank.

what do i need to do so that i can use 110v, plug it into a wall outlet and run a switch to make it work.

if i am thinking correctly, i need a 110v ac to 12 volt dc converter. but what size do i need so i can run the pump for 10-15 minutes at a time and make it all work?

here is the pump i am looking at

http://www.professional-products.co...mps/Powerflow-255-L-H-EFI-Fuel-Pump-p397.html

any help would be appreciated

thanks

 

[larry_g]

You will need to know what the amp draw of the pump is and then convert that to watts. The wattage or amps will tell you the size of the power supply to get. Me I would just make a set of jumper wires and connect it to a battery.

lg
no neat sig line

 

[kd3pc]

two things...

you will need a pressure reducer/regulator if you use that pump, 45 PSI is pretty quick

secondly, you need some way to "spark proof" the connection(s)....jumper cables and battery posts can produce a pretty good spark.

YMMV

 

[tractordude]

The guy that steals gas from my cars in the lot just uses a hose and his mouth.

 

[charger0926]

You will need to know what the amp draw of the pump is and then convert that to watts. The wattage or amps will tell you the size of the power supply to get. Me I would just make a set of jumper wires and connect it to a battery.

lg
no neat sig line

thanks for the reply. i would like to make this a little more compact and portable which is why i am trying to delete the car battery idea.

so if i can find out the amp draw of the pump, how will i convert it to watts? sorry for the lack of knowledge...never have been very good with the fundamentals of electricity.

i take it that different pumps may need different amounts of power?

if i just hook it up to a battery, do i not need to know the draw of the pump?
is that because i am just using straight 12 volt as opposed to trying to convert it from 110 v

thanks again for the info

 

[Beemer533]

I'm not sure that would be a good pump for this application.. I would think 45 psi is way too much to just transfer fuel.

For power you could use something like this, or even one of those jump start packs.

Whatever you do, as Larry said, you need to know how much power the pump requires first.

 

[Beemer533]

The guy that steals gas from my cars in the lot just uses a hose and his mouth.

Sorry, that just made me laugh...

 

[charger0926]

two things...

you will need a pressure reducer/regulator if you use that pump, 45 PSI is pretty quick

secondly, you need some way to "spark proof" the connection(s)....jumper cables and battery posts can produce a pretty good spark.

YMMV

thanks for the info.

i am trying to stay away from the car battery idea for ease of portability and compactness. thanks for the heads up on the regulator, i figured i may need one so fuel isnt spraying everywhere. any idea on what to set the psi at on the regulator? and how to spark proof the connectors, or was that only if i was going to use a battery set up.

i will also take any other suggestions on making a set up to transfer fuel from one tank to another, preferably with 110 instead of a car battery...different pumps or a pre-made kit

thanks again

 

[tractordude]

Seriously, buy a mityvac. I use mine almost everyday. It makes life happy, after doing a major brake job.http://www.amazon.com/dp/B000JFJM14/?tag=atomicindus08-20

 

[Jvvmusme]

You will need to know what the amp draw of the pump is and then convert that to watts. The wattage or amps will tell you the size of the power supply to get. Me I would just make a set of jumper wires and connect it to a battery.

lg
no neat sig line

A fuel pump consumes so little power that any converter will do the job.

 

[hackwelder]

I'm not sure that would be a good pump for this application.. I would think 45 psi is way too much to just transfer fuel.

.

Definitely agree, that pump is intended for fuel injection, lower flow and regulated higher pressure to supply a fuel rail. Something designed to transfer fuel would be a better choice.

 

[walrus]

Seriously, buy a mityvac. I use mine almost everyday. It makes life happy, after doing a major brake job.http://www.amazon.com/dp/B000JFJM14/?tag=atomicindus08-20

+1 on that, work great I use them to **** gas out of piping sumps under gas pumps. Not that fast put safe and easy

 

[theoldwizard1]

i am wanting to hook up a 12 volt electric fuel pump to siphon out fuel from my snowmobile gas tank.

That is way too much pump !

Make life easier on yourself. Your engine probably has a vacuum operated fuel pump. Cut the output line from the pump and install a tee with the appropriate clamps. (A good time to replace all fuel lines with Tygon fuel lines.) Attach a 3-4' fuel line to the 3 port of the tee. I would not trust a shut off valve. Use a plug and a clamp and make certain that the extra fuel line is carefully stowed away from hot engine parts.

 

[charger0926]

That is way too much pump !

Make life easier on yourself. Your engine probably has a vacuum operated fuel pump. Cut the output line from the pump and install a tee with the appropriate clamps. (A good time to replace all fuel lines with Tygon fuel lines.) Attach a 3-4' fuel line to the 3 port of the tee. I would not trust a shut off valve. Use a plug and a clamp and make certain that the extra fuel line is carefully stowed away from hot engine parts.

actually it is a fuel injected 3 cylinder with a electric pump in the tank, so i unfortunately dont think that this will work, but thanks for the idea it sounds like a good one.

 

[theoldwizard1]

If the snowmobile is on a trailer (above ground level) use a jiggle siphon !

Better yet, get 2 pieces of 1" vinyl hose, 1 piece about 2' and the other about 4-6' and a rag.Insert both hoses into the fuel tank. Make sure the longer hose reaches the bottom. Use the rag to stuff the gaps between the hose and the neck of the fuel tank. Place the end of the long hose into your gas can.

Blow into the short hose until fuel starts flowing.

You want to go faster ?

Get a rubber stopper that will fit into the neck of the fuel tank. You will need one with with 2 holes in it. (Probably something between a #10 and #13)

Force a piece of appropriately sized brass/copper tube through each hole (I would make the holes bigger so I could use something like 3/8" soft copper tube.) On the inside of the stopper connect a length of fuel line with a clamp that will reach to the bottom of the tank on to one of the tubes. On the outside of the stopper, connect a fuel line to that same copper tube long enough to go to your gas can to that same metal tube.

On the other tube, make some kind of adapter that will go to your air tank.

You will have to hold the plug unless you can regulate the air pressure down to less than about 5 psi. Too much pressure and you will burst the tank.

 

[charger0926]

Definitely agree, that pump is intended for fuel injection, lower flow and regulated higher pressure to supply a fuel rail. Something designed to transfer fuel would be a better choice.

i agree i have been looking for a good quality set up but mostly i find transfer pumps for either diesel or to be used for 55 gal drums.

so my thought process was to get a pump with a higher gph rating so it doesnt take 1/2 hour to empty 10 gallons. any thoughts on a lower pressure pump that is still rated at a higher gph, and have it run on 110 volt or at least converted to 110 v.

is this pump not able to be regulated down to a safe pressure?

thanks to everyone for the info

 

[Beemer533]

Here you go;
http://www.amazon.com/dp/B00C59RT1C/?tag=atomicindus08-20

2-3 psi for a carburetor fuel system, up to 42 GPH. Even lists fuel transfer as a good application. Not bad for $25. This with power supply I linked to earlier should work great.

 

[The Cobbler]

seems costly to remove a few gallons of gas every once in a while. I'm just saying!

 

[srmofo]

Correct me if Im wrong but the snow mobile has a battery?

You dont need an additional battery to run an external pump.

I made a transfer pump from an old fuel pump, some alligator clips, a switch, relay and wire. Took about 10 minutes to wire it all up. The pump came from a car with a collision damage to the tank, but if I had to buy one I would go to the parts store and ask for the cheapest one they sell since application doesnt matter.

 

[theoldwizard1]

Here you go;
http://www.amazon.com/dp/B00C59RT1C/?tag=atomicindus08-20

2-3 psi for a carburetor fuel system, up to 42 GPH. Even lists fuel transfer as a good application. Not bad for $25. This with power supply I linked to earlier should work great.

I agree.

I would just start the engine and hook the pump to the battery. We are only talking about 10-15 minutes of run time @ 42 GPH !

 

[csp]

Correct me if Im wrong but the snow mobile has a battery?

Most don't

 

[schmelpboy]

If you have a Dewalt (or any battery operated 3/8) MAC tools makes a transfer pump that works wonders.

 

[kelpaso1]

Jeez why make it so complicated? Buy a siphon pump or bulb (cheap) and siphon away. Or if you have air, just stick a hose in the tank and use an blow gun and blow the air at a 45 degree angle on the other end of the hose. This creates a low pressure and will start the siphon, then stick it into a gas can. No gas in your mouth.