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Hot Air
Samba Member
Joined: February 25, 2007
Posts: 664
Location: Baltimore, Maryland
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 Posted: Fri Dec 02, 2011 10:13 am Post subject: Electric fuel pump ? |
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I want to install an electric fuel pump.
Question is , If I use one that puts out 6psi and use a regulator at 3-3 1/2psi will I burn up the pump.
Was looking at the Carter P4070 ..Need a pump that I can use AN fittings on. I seen the cb performance one but it has barb fittings.
HELP!!!!!!
Lets see pic of your set up...
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85' Porsche 911 Carrera 3.2 |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20380
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Fri Dec 02, 2011 10:21 am Post subject: |
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Carter make a 3-4 psi rotary pump... But not with AN fittings....
http://www.summitracing.com/parts/CRT-P60504/
Will work with Webers with out a regulator...
For pumps with AN fittings search JEGS or Summit racing, think outside "VW Box"...
Dale
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gooser
Samba Member
Joined: February 21, 2008
Posts: 766
Location: danville virginia
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| Posted: Fri Dec 02, 2011 10:33 am Post subject: |
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| you'd be better off using a pump that puts out the correct amount to begin with. |
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Hot Air
Samba Member
Joined: February 25, 2007
Posts: 664
Location: Baltimore, Maryland
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| Posted: Fri Dec 02, 2011 11:40 am Post subject: |
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Talked to a tech support at Summit Racing. He said the Carter p4070 should be fine and not burn up. Is he correct ?
I see the facet pumps are a hit and miss issue.
What does a stock engine need for pressure?
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73' Bug
85' Porsche 911 Carrera 3.2 |
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RailBoy
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Joined: March 10, 2008
Posts: 2904
Location: Virginia
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| Posted: Fri Dec 02, 2011 12:09 pm Post subject: |
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| 3psi, that is what stock fuel pumps do as well and why many stick with them... RB |
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Max Welton
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Joined: May 19, 2003
Posts: 10697
Location: Black Forest, CO
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JustBuggy
Samba Member
Joined: August 01, 2010
Posts: 849
Location: SF Bay Area, Ca.
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| Posted: Sat Dec 03, 2011 2:13 am Post subject: |
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How about this question:
I'm installing a dual carbed engine in the near future. I'm going to need a fuel pump that I can regulate at 3-3.5 lbs.
Within the next year, I'll be installing a bigger, much warmed over engine with turbo EFI.
Is there a pump that will cover the carb fuel pressure and then once i switch over to boosted EFI handle that as well or am I going to have to buy two separate pumps? |
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RockCrusher
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Joined: August 03, 2010
Posts: 4596
Location: Parkesburg, PA
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| Posted: Sat Dec 03, 2011 5:02 am Post subject: |
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| JustBuggy wrote: |
| Is there a pump that will cover the carb fuel pressure and then once i switch over to boosted EFI handle that as well or am I going to have to buy two separate pumps? |
2 pumps
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Cptn. Calzone
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Joined: June 27, 2007
Posts: 1855
Location: S>E>Alabama
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| Posted: Sat Dec 03, 2011 6:39 am Post subject: fuel pump |
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To answer hotair, yes you can convert the CB/carter rotary pump to an set up: Fragola makes a fitting that is barbed on one end for the pump and then an-6 on the othre end .Then you plumb as normal with any an set up.The tank fitting can be converted to an as well I believe M-spec motorsport sells them I use one it is a nice piece has a nylon o ring /gasket.
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67 912 Porsche Quintilla
67 Single Cab aka my work horse |
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donald.lemay
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Joined: March 01, 2009
Posts: 484
Location: Rhode Island
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| Posted: Sat Dec 03, 2011 6:40 am Post subject: |
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This is what I did in my bus. 
The fuel shut off is the best thing I did. I used my old pump with about 50000 mi. and bought an extra for the box. Replaced the old one road side in 15 min. no mess. That was a happy day for AN fittings and shut off. |
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dualport
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Joined: February 13, 2005
Posts: 69
Location: Austin
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| Posted: Fri Jan 06, 2012 10:05 pm Post subject: What is the line running where the fuel line used to be? |
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I see that you have a line above the fuel filter - and also the filter before the pump?
I am trying to set up a 68 tank in my split bus and am attempting the AN fittings while I am at it. |
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torsionbar
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Joined: December 11, 2010
Posts: 2215
Location: earf
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| Posted: Fri Jan 06, 2012 10:07 pm Post subject: Re: Electric fuel pump ? |
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| Hot Air wrote: |
I want to install an electric fuel pump.
Question is , If I use one that puts out 6psi and use a regulator at 3-3 1/2psi will I burn up the pump.
Was looking at the Carter P4070 ..Need a pump that I can use AN fittings on. I seen the cb performance one but it has barb fittings.
HELP!!!!!!
Lets see pic of your set up... |
why?? if i didn't have a late fuel injected case, i'd huck my electric pump in the trash and use a mechanical one. mechanical pumps are so simple, easy to repair and rebuild, very inexpensive, and flow more than enough even for large dual carbs.
mechanical pump also has the advantage in that if you crash and the engine stalls, the pump stops delivering fuel. most people who add an electric pump do it the lazy stupid way, which means it'll keep pumping gasoline into an engine fire if you crash. if you do go electric, be sure and use a relay that will kill the pump when the engine isn't turning.
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| Max Welton wrote: |
[air cooled vw's] are no longer suitable for the general public. The owner has to be be able to maintain the car. And that is after fixing all the deferred maintenance items and ill-conceived modifications. If you can't do those things you are pretty much screwed. |
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67 Shane
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Joined: September 05, 2007
Posts: 1080
Location: Losing my mind in Charlotte, N.C.
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| Posted: Fri Jan 06, 2012 10:40 pm Post subject: |
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I put the CB rotary pump in my 67 Beetle. I added dual carbs, blocked off the stock pump and threw the carter from CB under the tank in front. It almost so quiet you wonder if its on. I have had to sit there quiet for a few to make sure its on and I hear it quietly buzzing.
I did however wire it to a switch hidden in the car. One it will keep assholes from stealing the car or at least take them more time doing so. The other is if a fire does break out I can hit the switch and hope for the best. Im going to run another in my 67 SO42 thats getting a 2017cc. I like it and would recommend it. Just make sure to carry the original and all parts in case it does shit out on you while on a trip. You can pull over, throw in the stocker and go about your business.
For the longest time I had a stock pump and an electric bugpack unit up front. If the stock failed I could throw on the electric and get home. Your choice which way to go though.
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JustBuggy
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Joined: August 01, 2010
Posts: 849
Location: SF Bay Area, Ca.
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| Posted: Sat Jan 07, 2012 12:38 am Post subject: Re: Electric fuel pump ? |
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| torsionbar wrote: |
.......
most people who add an electric pump do it the lazy stupid way, which means it'll keep pumping gasoline into an engine fire if you crash. if you do go electric, be sure and use a relay that will kill the pump when the engine isn't turning. |
Good point, I never thought about this! Where do you get one of the crash relays aftermarket?
Last edited by JustBuggy on Sat Jan 07, 2012 6:49 am; edited 1 time in total |
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donald.lemay
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Joined: March 01, 2009
Posts: 484
Location: Rhode Island
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| Posted: Sat Jan 07, 2012 2:39 am Post subject: |
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Hey dual port, The line above the filter is an electric hook up with heat shrink. Filter before pump is a good idea keep all dirt out of those spinning parts of the pump. This setup works nice in a bus.Fuel shutoff is key. I used a AC delco astro van filter so I wouldn't have problems finding for a long time.
Any question PM me I could give you a parts list.
Don |
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VIN
Samba Member
Joined: June 01, 2006
Posts: 941
Location: phoenix
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| Posted: Sat Jan 07, 2012 8:21 am Post subject: Re: Electric fuel pump ? |
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| JustBuggy wrote: |
| torsionbar wrote: |
.......
most people who add an electric pump do it the lazy stupid way, which means it'll keep pumping gasoline into an engine fire if you crash. if you do go electric, be sure and use a relay that will kill the pump when the engine isn't turning. |
Good point, I never thought about this! Where do you get one of the crash relays aftermarket? |
maybe a tip over switch for a motorcyle..or Espar gas/diesel heaters have a provision for rollover switch
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ev88f
Samba Member
Joined: April 07, 2008
Posts: 139
Location: North Port FL
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| Posted: Sat Jan 07, 2012 8:59 am Post subject: |
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| The trip relays can be found on most ford products. on Rangers look under the front-passenger carpet near the shifter/center console. look for a black box with a red reset button |
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SRP1
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Joined: January 06, 2007
Posts: 4340
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| Posted: Sat Jan 07, 2012 9:07 am Post subject: |
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I beleieve this is what you guys are after regarding the relay, it feeds off of the ignition to sense rpm. Should the engine stall it shuts off the pump, the only other safety item you could add beyond this would be an inertia switch, and as said above found in Fords easily
but the wiring may take some figuring out?
http://www.germansupply.com/home/customer/product.php?productid=16928&cat=&page=1
Last edited by SRP1 on Sat Jan 07, 2012 9:10 am; edited 1 time in total |
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Juice C
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Joined: October 27, 2008
Posts: 289
Location: Augusta Ks.
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| Posted: Sat Jan 07, 2012 9:09 am Post subject: |
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| donald.lemay wrote: |
This setup works nice in a bus.Fuel shutoff is key.
Don |
I know that a fuel shutoff is good to have in case of an accident but is there any other reason for it. My motor in my bus keeps filling full of gas when its not running , and I was contemplating a shut off valve to stop it from happening again.
Of coarse I'll change the needle and seats again also.  |
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Dale M.
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Joined: April 12, 2006
Posts: 20380
Location: Just a tiny bit west of Yosemite Valley
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