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NHE conversion to gasoline?


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  #31  
Old 10-01-2015, 04:42:44 PM
sdowney717 sdowney717 is offline
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Default Re: NHE conversion to gasoline?

Quote:
Originally Posted by Bucky1320 View Post
I was thinking something like this:
http://www.ebay.com/itm/Universal-El...7a3ca7&vxp=mtr
I was hoping to avoid putting a regulator on, but may have to.
Ask the seller what oem Facet number is stamped on the metal mount flange, that way you know what model your getting.

Onan uses these , they look like this here. and it is cheaper.
4 to 5 lbs
http://www.amazon.com/Autobest-F4027...0_SR160%2C160_

2.5 to 4.5 lbs
http://www.amazon.com/Airtex-E8016S-...rtek+fuel+pump

Likely the Airtex pump is better idea.

Here is a cheap priced Holley regulator 1 to 4 psi
http://www.ebay.com/itm/Holley-Fuel-...1c084a&vxp=mtr

These diaphragm's fit the Holley regs, they are green and etanol-methanol proof, so they do not crack like the black rubber ones. the spring tension determines the pressure, so with the Holley one you may need to reuse it's conical spring
http://www.ebay.com/itm/Quick-Fuel-F...25d2a9&vxp=mtr

Last edited by sdowney717; 10-01-2015 at 04:55:20 PM.
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  #32  
Old 10-01-2015, 04:50:33 PM
Bucky1320 Bucky1320 is offline
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Default Re: NHE conversion to gasoline?

That's like another one suggested at the parts store....only cheaper!
So, is pulling reasonable with this one? Mount at generator and pull from probably 17' of fuel line?
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  #33  
Old 10-01-2015, 05:26:32 PM
sdowney717 sdowney717 is offline
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Default Re: NHE conversion to gasoline?

It should pull ok, as long as there is zero leaks in the suction line.

Quote:
By David Tietz on February 12, 2014
Verified Purchase
I just called Autobest Corp in California and got the F4027 psi output confirmed. It is 2.5 fluctuating to 3 psi. Also it should be mounted vertical (actually about 5 degrees off vertical to prevent vapor lock). It should be mounted below the gas tank. It is not self priming.
so the Autobest is 2.5 to 3 psi.
Although the mention of not self priming is a concern for the Autobest

Can you mount the pump near the fuel tank, so that fuel flows into it?
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  #34  
Old 10-01-2015, 05:32:43 PM
len k len k is offline
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Default Re: NHE conversion to gasoline?

Think I'ld prefer a separate 3 psi pump over a regulator, reg is likely fine long term but anything can fail. 3 psi pump is not going to suddenly make 10 psi. Also don't have to worry about car injectors leaking and possiblely hydrolocking a piston


But I'm pretty comfortable working on gas tanks, dropped about 8 over last 10 years to replace in-tank pump, rusty tank, rusty tank straps, rusty car body, and ........ metal tank with a hole in it when dad backed into a sharp rock:

Last edited by len k; 10-01-2015 at 05:55:27 PM.
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  #35  
Old 10-01-2015, 06:25:56 PM
Bucky1320 Bucky1320 is offline
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Default Re: NHE conversion to gasoline?

The tank will have a top outlet with a dip tube. I can get it close to the tank but it will still pull out of top of thank through dip tube
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  #36  
Old 10-01-2015, 07:44:13 PM
sdowney717 sdowney717 is offline
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Default Re: NHE conversion to gasoline?

http://www.mgexp.com/phorum/read.php?3,2236514
read post #9
These pumps can lift fuel, they would be useless if they could not suck fuel from a tank.
I would email Airtex and get the info, they have responded for me before.

Here are reviews at Amazon saying the Airtex easily lifts fuel out of the tanks, so it looks to me like it is fine
Quote:
Question: is this a gravity feed punp.com
Answer: I actually used it to pump my boat gas tanks empty and the pump was much higher than the fuel level. Worked great in that application with no signs of struggle or performance issues.
By Teddie Combs on March 30, 2015
I don't understand what you mean by a gravity feed.com pump. The pump is a positive displacement, solenoid driven pump. It does not require a positive pressure at the inlet, but I don't know how far the pump will "lift" gasoline from the tank. In my application the pump was located about a foot above the gas tank and it worked fine. see less
By Edward Mcdonald on March 31, 2015

By fuelpumpking on March 30, 2015
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  #37  
Old 10-01-2015, 08:36:28 PM
len k len k is offline
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Default Re: NHE conversion to gasoline?

Been a while but I think I saw inlet of these pumps can suck fuel up 3 ft. Some pumps can pull it higher. But it's good to not use all that ability so pump will still work fine when it gets worn. Manufactures publish flow/pressure curves for their various pump models.

3 psi outlet pressure can push gas up about 9.9 feet against gravity.

On my tank I plan on putting bulkhead tap about 1/2 way up , only because that's where there's space , and garbage on road won't hit it. And use a dip tube and course FILTER screen inside tank like the car's inlet has . My plastic tanks were generally clean , but I saw a small piece of cotton ball floating around in mine when I replaced intank pump. Likely came from cleaning out a line at the gas station.

Last edited by len k; 10-01-2015 at 10:40:18 PM.
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  #38  
Old 10-01-2015, 10:30:10 PM
Bucky1320 Bucky1320 is offline
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Default Re: NHE conversion to gasoline?

Very little lift in this case. 12" perhaps. The horizontal distance is much greater. The pump has an inlet filter, and I will have one mounted at the inlet of the carb. That's the plan anyhow.
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  #39  
Old 10-01-2015, 10:44:59 PM
len k len k is offline
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Default Re: NHE conversion to gasoline?

Good to add a mesh screen filter on pipe inlet so big garbage, like my cotton ball, doesn't plug the pipe.
Seen it on every suction dip tube in car gas tanks that I've taken apart since the 60's. ( I haven't worked on older ones)

I've given some thought to using one below on my dip tube. Cutting one end off, sticking dip tube in it, and just wrapping steel wire tightly around it to hold it in place.


Here's a mesh filter I've used on car's in-tank pump, it snaps on inlet of in-tank pump. It's hollow and flat.
http://shop.advanceautoparts.com/p/b...nk+pump+filter
http://shop.advanceautoparts.com/p/b...nk+pump+filter <---- ( Just to show filter, pump likely makes too much pressure)

Last edited by len k; 10-01-2015 at 11:05:14 PM.
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Old 10-02-2015, 09:35:32 AM
Bucky1320 Bucky1320 is offline
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Default Re: NHE conversion to gasoline?

Speaking of fuel pumps: Where are you gents getting power from? I can do some probing to see what is live during cranking and running. But if someone knows off the top of their head it will save me some time. Also, does a small pump like this need a relay or can it run right from the power source?
Thanks!

---------- Post added at 07:54 AM ---------- Previous post was at 07:24 AM ----------

I am leaning toward using the power leads for the propane solinoid for the fuel pump. Should be live at the same demand times I would think. Simple and easy.

---------- Post added at 08:35 AM ---------- Previous post was at 07:54 AM ----------

Found a great manual. Looks like they drove the fuel pump off the same circuit as the lp solenoid. So I am good there. They also powered the electric choke off the same pin. And it stated that under 6 psi is ok.
Now I am ready for some generator work time Saturday morning!
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