Backup electric fuel pump?
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Post Fiend
Joined: Apr 2002
Posts: 7,157
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From: Central Kali
Backup electric fuel pump?
Does anyone know of an inexpensive electric fuel pump to use as a backup to my mechanical pump. It would not be used unless the main pump failed. I might use it to fill 1 gal. gas cans. Thanks 
Post Fiend
Joined: Jun 2002
Posts: 13,873
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From: Atlanta GA
Backup electric fuel pump?
As a "backup - get me home at 35 mph" pump, a VW pump is small, requires hardly juice, is a simple two wire hookup, looks like a big fuel filter, and could be duct taped anywhere you want it in an emergency.
Posting Guru
Joined: Sep 2001
Posts: 1,531
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From: in the country
Backup electric fuel pump?
You might consider converting over too an electrical pump before the mechanical pump craps out on you.....I put a holley pump on my 77 and went ahead and ran a return line back to the "behind the seat tank" thru a whole in the round body of the sending unit....the circulating fuel helps keep the pump cool as well as the fuel during the summer here in texas....fd 
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Post Fiend
Joined: Apr 2002
Posts: 7,157
Likes: 1
From: Central Kali
Backup electric fuel pump?
I bought a Master brand fuel pump also called bomba de gasolina and pompe A essence at Autozone with a lifetime warrenty for $34. No specs given on fuel gpm. Will run some tests on it. No mention of the use of a return line to the tank. When would this be necessary?
Senior User
Joined: Aug 2002
Posts: 184
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From: Chattanooga US
Backup electric fuel pump?
If you plan on installing an electrical pump be careful. if the elec. is in line with the mech. and the mech. pump fails due to a rupture in the diaphram, the elec. can pump raw fuel straight into the crankcase. Autozone sell one part# e-8012s but it should be installed as a stand alone. You could use it as a backup but make provisions to isolate the mechanical pump completely.
Hope this helps.
Greg
Hope this helps.
Greg
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Elder User
Joined: Feb 2002
Posts: 542
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From: Middleton, WI
Backup electric fuel pump?
>Does anyone know of an inexpensive electric fuel pump to use
>as a backup to my mechanical pump. It would not be used
>unless the main pump failed. I might use it to fill 1 gal.
>gas cans. Thanks
You can't protect against everything, but if you travel a lot off road or Baja, you might be on to something, or just carry a spare Mech pump. Or a AAA card and Platinum Visa.
>as a backup to my mechanical pump. It would not be used
>unless the main pump failed. I might use it to fill 1 gal.
>gas cans. Thanks
You can't protect against everything, but if you travel a lot off road or Baja, you might be on to something, or just carry a spare Mech pump. Or a AAA card and Platinum Visa.
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Post Fiend
Joined: Apr 2002
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Likes: 1
From: Central Kali
Backup electric fuel pump?
All my mechanical pump failures were just a failure to pump. Actually have not had that many. I am going to install the electric one in parallel. I will have to check to see if it will let gas go through backwards. If so I will need a valve or check valve at the output. 
Mountain Pass
Joined: Apr 2001
Posts: 198
Likes: 0
Backup electric fuel pump?
Originally posted by fatdaddy
You might consider converting over too an electrical pump before the mechanical pump craps out on you.....I put a holley pump on my 77 and went ahead and ran a return line back to the "behind the seat tank" thru a whole in the round body of the sending unit....the circulating fuel helps keep the pump cool as well as the fuel during the summer here in texas....
You might consider converting over too an electrical pump before the mechanical pump craps out on you.....I put a holley pump on my 77 and went ahead and ran a return line back to the "behind the seat tank" thru a whole in the round body of the sending unit....the circulating fuel helps keep the pump cool as well as the fuel during the summer here in texas....
Do you have to install a regulator to run a return?
If so, would that help prevent the situation of pumping fuel all over the place in an accident that killed the engine?
Or would that still require an oil pressure shutoff?
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Post Fiend
Joined: Apr 2002
Posts: 7,157
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From: Central Kali
Backup electric fuel pump?
The pump I bought does not mention the use of a return line. I am now thinking of using two of them in parallel with a switch so I could select one at a time. I could then ditch the mechanical pump. Still need to run a test and see how it performs under a load. 
Mountain Pass
Joined: Apr 2001
Posts: 198
Likes: 0
Backup electric fuel pump?
Originally posted by Mike W
The pump I bought does not mention the use of a return line. I am now thinking of using two of them in parallel with a switch so I could select one at a time. I could then ditch the mechanical pump. Still need to run a test and see how it performs under a load. :)
The pump I bought does not mention the use of a return line. I am now thinking of using two of them in parallel with a switch so I could select one at a time. I could then ditch the mechanical pump. Still need to run a test and see how it performs under a load. :)
My old one didn't require a return either... that's why I was interested in the setup fatdaddy mentioned in his post.
