Fuel/lift Pump recommendation for HDJ81 WVO set-up

[ScottJacob]

Hey folks,

I have a waste veg oil set up installed on my HDJ81. It has a secondary tank installed at the rear of the vehicle with a coolant coil going through the tank to help heat the oil. The system also has a seperate fuel filter installed for the veg oil (aluminum base heated with coolant) and a send and return valve for switching from the stock diesel system to the veg system. The veg oil return line is looped. I also have an electronic heater installed just before the injection pump, which is activated on the same electronic switch as the send valve, to ensure that the veg oil is at the right temp.

My question is, because the veg oil fuel line is quite long (running all the way back to the rear tank), I figure this puts a significant amount of strain on the injection pump. So I'm thinking about adding an aftermarket fuel/lift pump that helps pull the oil from the rear tank. Does anyone have any recommendations on this? If so, what brand/rating should I go for?

I found this Walbro one, which has a PSI rating of 8-10. I'm wondering if anyone can tell me if this would be the right choice, or if they'd recommend something else.

FRB-5 Reciprocating Fuel Pump - Walbro

Walbro manufactures ignition systems, fuel injection, air/fuel management systems, pumps, valves and fuel storage and distribution systems...

www.walbro.com

Thanks in advance for the advice. Y'all are awesome.

 

[mudgudgeon]

Hey folks,

I have a waste veg oil set up installed on my HDJ81. It has a secondary tank installed at the rear of the vehicle with a coolant coil going through the tank to help heat the oil. The system also has a seperate fuel filter installed for the veg oil (aluminum base heated with coolant) and a send and return valve for switching from the stock diesel system to the veg system. The veg oil return line is looped. I also have an electronic heater installed just before the injection pump, which is activated on the same electronic switch as the send valve, to ensure that the veg oil is at the right temp.

My question is, because the veg oil fuel line is quite long (running all the way back to the rear tank), I figure this puts a significant amount of strain on the injection pump. So I'm thinking about adding an aftermarket fuel/lift pump that helps pull the oil from the rear tank. Does anyone have any recommendations on this? If so, what brand/rating should I go for?

I found this Walbro one, which has a PSI rating of 8-10. I'm wondering if anyone can tell me if this would be the right choice, or if they'd recommend something else.

FRB-5 Reciprocating Fuel Pump - Walbro

Walbro manufactures ignition systems, fuel injection, air/fuel management systems, pumps, valves and fuel storage and distribution systems...

www.walbro.com

Thanks in advance for the advice. Y'all are awesome.

You'll have a better chance of getting an answer in the diesel tech section. There's existing threads on WVO and Biodiesel.

The need for a lift pump for the 1HD-T rotary pumps is mostly considered unnecessary, and a waste of time.
I don't know enough about WVO to know whether it has properties that make a lift pump necessary.

I believe 5-6 psi is the maximum pressure you should be using if you do go with a lift pump.