Home » Public Forums » GMCnet » Electric Fuel Pumps
| Electric Fuel Pumps [message #275256] |
Tue, 07 April 2015 08:32  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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I have one of these plumbed into the aux tank line before the selector, powered by the selector 12 volts:
http://www.carid.com/mr-gasket/electric-fuel-pump-4-7-psi-35-gph-mpn-12s.html?gclid=CP3J4KGl5MQCFTMS7Aod_hMAgA
Having used the Diesel version for some years successfully, on a Jetta with a 'leakdown' pump, I opted for this one for the coach. It primes the carb well when the coach has been parked for a while. It doesn't seem to overcome problems from engine stalling from heat, but when the engine stalls, it's so dam' hot on top, I don't think much of anything is going to restart it except time to cool.
Anyhow, I propose to fit a second one of these with a relay to power the two of them, and simply tee the outputs to the line going to the carb. They have integral check valves, so this ought to work. I can mount them atop a piece of flat steel stock running diagonally between the cross member and the driver's side frame rail and use the existing lines and fittings.
Concerns or ideas?
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Electric Fuel Pumps [message #275316 is a reply to message #275256] |
Tue, 07 April 2015 18:00  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Johnny,
I would suggest the Facet 40104 because it puts out less pressure; below is an email I sent in yonks ago.
Here's a link to the specs on the 40104:
http://www.facet-purolator.com/cat_part_finder.php?fltr=40104&col=PART_NUM_ID
Regards,
Rob M.
The Pedantic Mechanic
Quote
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Rob Mueller
Sent: Friday, April 26, 2013 12:38 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Aux Fuel Pump
Erich,
Here's the JimB easy fix for vapor lock.
Install one of the Facet pumps below in the line that comes from the Aux tank to the selector valve. Wire it to the selector valve.
When you switch to AUX the pump comes on and pressurizes the inlet of the mechanical fuel pump. I've used it for the past three
years and it works very well.
DOWNSIDE: if you have a fuel pump with a weak diaphragm it is possible that the pressure from this pump could tear it and fill the
crankcase with fuel.
12 VOLT FACET CUBE FUEL PUMPS
PART #: 40104
MIN - MAX PSI: 1.5 - 4.0
GPH: 25
INLET/OUTLET THREAD SIZE: 1/8-27 NPT
MIN. DRY LIFT: 12"
CHECK VALVE: NO
It is also a good idea to install a fuel filter in the rubber line that attaches the steel line attached to the front cross member
to the mechanical fuel pump inlet.
Regards,
Rob M.
-----Original Message-----
From: Johnny Bridges
I have one of these plumbed into the aux tank line before the selector, powered by the selector 12 volts:
http://www.carid.com/mr-gasket/electric-fuel-pump-4-7-psi-35-gph-mpn-12s.html?gclid=CP3J4KGl5MQCFTMS7Aod_hMAgA
Having used the Diesel version for some years successfully, on a Jetta with a 'leakdown' pump, I opted for this one for the coach.
It primes the carb well when the coach has been parked for a while. It doesn't seem to overcome problems from engine stalling from
heat, but when the engine stalls, it's so dam' hot on top, I don't think much of anything is going to restart it except time to
cool.
Anyhow, I propose to fit a second one of these with a relay to power the two of them, and simply tee the outputs to the line going
to the carb. They have integral check valves, so this ought to work. I can mount them atop a piece of flat steel stock running
diagonally between the cross member and the driver's side frame rail and use the existing lines and fittings.
Concerns or ideas?
--johnny
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Electric Fuel Pumps [message #275326 is a reply to message #275316] |
Tue, 07 April 2015 19:53 |
Tony Cook
Messages: 121
Registered: August 2014
Location: Torrance CA
Karma: 0
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Senior Member |
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I did this conversion using that Mr.Gasket pump and that filter that comes with it was junk its pressed together and starting weeping then leaking badly i swapped it for a Carter type and had no issue's
Tony Cook
77' Kingsley ' SuperSession 77 '
Torrance Beach,CA
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| Re: [GMCnet] Electric Fuel Pumps [message #275393 is a reply to message #275256] |
Wed, 08 April 2015 10:22 |
GMC.LES
Messages: 505
Registered: April 2014
Karma: -2
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Senior Member |
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While researching electric fuel pumps, I came across some info related to the Carter P4070. Since it is a popular pump among GMC people, I figured I'd share what I found.
The following pumps are identical in design and performance to the P4070 and therefore a direct replacement.
Spectra Premium SP1130
Airtex E84070
Delphi FE0539
Ford E1HZ9350A
I recently purchased two of the SP1130 pumps from RockAuto on clearance for $38ea. I already had a Carter p4600 & a P4601HP (100gph version of the P4070) and the Spectra pump is externally identical. I plan on opening them up for an internal compare but don't expect any surprises.
The Carter pumps are marked "Made in USA" on the boxes, while the boxes for the Spectra SP1130 pumps are marked "Made in China". Longevity may be an issue with the copies, but it is nice to know that there are options if a pump fails while away from home.
Carter makes a rebuild kit for the P4070 & variants that contains a cover Gasket, new filter screen, new pump rotor and vanes, and new rubber mounts,
I also found a check valve rated for gasoline that has 1/4" NPTF ends. Carter rates it for pump bypass service, allowing a mechanical pump to draw from the tank since a P4070 does not allow thru-flow when not running. This check valve can be found under the following numbers:
Carter 169-1002
Airtex. CV8000
Les Burt
Montreal
'75 Eleganza 26'
The EWIP (Eternal Work In Progress)
> On Apr 7, 2015, at 9:32 AM, Johnny Bridges wrote:
>
> I have one of these plumbed into the aux tank line before the selector, powered by the selector 12 volts:
>
> http://www.carid.com/mr-gasket/electric-fuel-pump-4-7-psi-35-gph-mpn-12s.html?gclid=CP3J4KGl5MQCFTMS7Aod_hMAgA
>
> Having used the Diesel version for some years successfully, on a Jetta with a 'leakdown' pump, I opted for this one for the coach. It primes the carb
> well when the coach has been parked for a while. It doesn't seem to overcome problems from engine stalling from heat, but when the engine stalls,
> it's so dam' hot on top, I don't think much of anything is going to restart it except time to cool.
>
> Anyhow, I propose to fit a second one of these with a relay to power the two of them, and simply tee the outputs to the line going to the carb. They
> have integral check valves, so this ought to work. I can mount them atop a piece of flat steel stock running diagonally between the cross member and
> the driver's side frame rail and use the existing lines and fittings.
>
> Concerns or ideas?
>
> --johnny
>
> --
> '76 23' transmode Norris upfit
> Braselton, Ga.
>
> "Sometimes I wonder what tomorrow's gonna bring when I think about my dirty life and times" --Warren Zevon
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Electric Fuel Pumps [message #275394 is a reply to message #275393] |
Wed, 08 April 2015 10:24 |
GMC.LES
Messages: 505
Registered: April 2014
Karma: -2
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Senior Member |
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I forgot to include the Carter pump kit part number which is 888-178.
Good info to carry in the coach if you are running a P4070 or equivalent.
Les Burt
Montreal
'75 Eleganza 26'
The EWIP (Eternal Work In Progress)
> On Apr 8, 2015, at 11:22 AM, Les Burt wrote:
>
> While researching electric fuel pumps, I came across some info related to the Carter P4070. Since it is a popular pump among GMC people, I figured I'd share what I found.
>
> The following pumps are identical in design and performance to the P4070 and therefore a direct replacement.
>
> Spectra Premium SP1130
> Airtex E84070
> Delphi FE0539
> Ford E1HZ9350A
>
> I recently purchased two of the SP1130 pumps from RockAuto on clearance for $38ea. I already had a Carter p4600 & a P4601HP (100gph version of the P4070) and the Spectra pump is externally identical. I plan on opening them up for an internal compare but don't expect any surprises.
>
> The Carter pumps are marked "Made in USA" on the boxes, while the boxes for the Spectra SP1130 pumps are marked "Made in China". Longevity may be an issue with the copies, but it is nice to know that there are options if a pump fails while away from home.
>
> Carter makes a rebuild kit for the P4070 & variants that contains a cover Gasket, new filter screen, new pump rotor and vanes, and new rubber mounts,
>
> I also found a check valve rated for gasoline that has 1/4" NPTF ends. Carter rates it for pump bypass service, allowing a mechanical pump to draw from the tank since a P4070 does not allow thru-flow when not running. This check valve can be found under the following numbers:
>
> Carter 169-1002
> Airtex. CV8000
>
>
> Les Burt
> Montreal
> '75 Eleganza 26'
> The EWIP (Eternal Work In Progress)
>
>
>> On Apr 7, 2015, at 9:32 AM, Johnny Bridges wrote:
>>
>> I have one of these plumbed into the aux tank line before the selector, powered by the selector 12 volts:
>>
>> http://www.carid.com/mr-gasket/electric-fuel-pump-4-7-psi-35-gph-mpn-12s.html?gclid=CP3J4KGl5MQCFTMS7Aod_hMAgA
>>
>> Having used the Diesel version for some years successfully, on a Jetta with a 'leakdown' pump, I opted for this one for the coach. It primes the carb
>> well when the coach has been parked for a while. It doesn't seem to overcome problems from engine stalling from heat, but when the engine stalls,
>> it's so dam' hot on top, I don't think much of anything is going to restart it except time to cool.
>>
>> Anyhow, I propose to fit a second one of these with a relay to power the two of them, and simply tee the outputs to the line going to the carb. They
>> have integral check valves, so this ought to work. I can mount them atop a piece of flat steel stock running diagonally between the cross member and
>> the driver's side frame rail and use the existing lines and fittings.
>>
>> Concerns or ideas?
>>
>> --johnny
>>
>> --
>> '76 23' transmode Norris upfit
>> Braselton, Ga.
>>
>> "Sometimes I wonder what tomorrow's gonna bring when I think about my dirty life and times" --Warren Zevon
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Electric Fuel Pumps [message #275427 is a reply to message #275332] |
Wed, 08 April 2015 14:25 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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They don't draw enough to want a relay, but to power two of them alternately without adding a switch does. Run the relay off the selector line, and let it switch a fused 12v line from an oil pressure safety switch between the two. Energized runs the aux, deenergized runs the main. AND the oil pressure 12v with the 12v aux terminal on the starter using a couple of diodes, and the selected pump will run when you're cranking. Optionally, skip the oil pressure safety, and remember to not turn the coach over.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Electric Fuel Pumps [message #275452 is a reply to message #275427] |
Wed, 08 April 2015 19:01 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Or, as Ken B. learned, have a fire for the electric pump to fuel.
Ken H.
On Wed, Apr 8, 2015 at 3:25 PM, Johnny Bridges wrote:
> ...
> Optionally, skip
>
> the oil pressure safety, and remember to not turn the coach over.
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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