want to convert to electric fuel pump on my 74 6x6

[jss16]

I like to ditch the factory pump and install a facet unit. but not sure which to get . 1-3 psi or the 4-7 psi unit any help would be great

[jerseybigfoot]

I like to ditch the factory pump and install a facet unit. but not sure which to get . 1-3 psi or the 4-7 psi unit any help would be great

Go with the low pressure unit. The OEM vac powered pumps just about put out 1.5 psi due to the carb setup

[Canadian_Zuk]

x2 for a 1-3psi pump but I would prefer to keep the diapragm pump setup. It's cheaper, more reliable and perfectly adaquate for the job. KISS

[jerseybigfoot]

There are performance limitations with the stock pump, fuel tank location and hills. Had both max 4 with Kohler Command cut out going down long steep grades and a Argo Bigfoot going up long steep grades. The solution was to add a 3-4 psi electric fuel pump at the tank and tee it into the existing vac driven pump and return the excess back to the tank through a 1.5 psi check.

[Toys4Me]

If you really want to switch to a electric fuel pump which I'm done on a few machine due to diaphragm pumps failing. I would recommend a screw style pump like these.
Amazon.com: Mr. Gasket 42S Electric Fuel Pump: Automotive
The electric diaphragm pumps still fail like the vacuum ones.

[onlyonce]

I too have experienced a 20hp Kohler Command dying on long downhill treks from lack of fuel.

[jss16]

great info guys. now that we know oem system is 1.5 psi I will order this unit
Posi Flo Pumps | Motor Components, LLC | Facet Purolator

its rated 1.5-4 psi . just so we are clear I plan not to use the oem vac pump all together. not just tie this into it .

since this facet unit is rated up to 4 psi you think I need to add a regulator to system?

[Toys4Me]

I've found on a few the float springs are strong enough to stop the flow and others I've had to put a "T" in the line and feed back to the tank.

[racerone3]

glad I read this thread. It's been so long sense Ive owned an Argo, that I forgot about about the fuel starvation issue on long climbs with the tank mounted under the seat. I just mounted the tank in my Coot way back in the LR corner and that surely would have caused issues! Pump ordered

[ARGOJIM]

glad I read this thread. It's been so long sense Ive owned an Argo, that I forgot about about the fuel starvation issue on long climbs with the tank mounted under the seat. I just mounted the tank in my Coot way back in the LR corner and that surely would have caused issues! Pump ordered

I believe the Argo issue with Briggs is the lack of oil return up hill reaching the pulse line.
Unless of course your low on fuel.

[ARGOJIM]

great info guys. now that we know oem system is 1.5 psi I will order this unit
Posi Flo Pumps | Motor Components, LLC | Facet Purolator

its rated 1.5-4 psi . just so we are clear I plan not to use the oem vac pump all together. not just tie this into it .

since this facet unit is rated up to 4 psi you think I need to add a regulator to system?

Many of our older Tecumsehs with carb mounted pump were switched to the cube style pump.

Is your machine a 74 ABS hard body machine with a 2 stroke?

[jss16]

yes mine is 2 stoke

[ARGOJIM]

WOW that's clean.
Better talk to the 2 stroke guys about the pump, if you have a Tilloston or Walbro (probably) you can modify the carb if it has a pump internally and return line to use a Mikuni pulse pump.

[jss16]

cool thanks guys

[jss16]

I would like if someone can explain whats ment by adding a t fitting to return fuel to tank