6 Volt Electric Fuel Pump Conversion.
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- G-Second Lieutenant
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6 Volt Electric Fuel Pump Conversion.
Living in the California foothills where temperatures often exceed 100 degF has me very tired of vapor lock. Yes I know about insulating the mechanical pump from the block, wrapping/re-routing fuel lines, etc, but I'm pretty set on going electric.
Some people use an electric pump as a booster inline with the mechanical pump to handle priming and vapor lock. I won't do that, I'm tossing the mechanical. Like to keep it simple-ish and it is one less thing to break, leak, clog etc.
I want to use an oil pressure driven cutoff switch for safety with a bypass switch to prime it and start it prior to pressure being build up.
Does anyone have a list of materials that they have found to work with our Carter carbs?
Where did you mount the oil cutoff switch?
Did you need a regulator?
Many thanks, Doug.
Some people use an electric pump as a booster inline with the mechanical pump to handle priming and vapor lock. I won't do that, I'm tossing the mechanical. Like to keep it simple-ish and it is one less thing to break, leak, clog etc.
I want to use an oil pressure driven cutoff switch for safety with a bypass switch to prime it and start it prior to pressure being build up.
Does anyone have a list of materials that they have found to work with our Carter carbs?
Where did you mount the oil cutoff switch?
Did you need a regulator?
Many thanks, Doug.
Doug
Sacramento Area
1943 Willys MB
1943 GPW-125334 (Sold)
1962 M170
1959 Willys Wagon
Sacramento Area
1943 Willys MB
1943 GPW-125334 (Sold)
1962 M170
1959 Willys Wagon
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- G-Colonel
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Re: 6 Volt Electric Fuel Pump Conversion.
did you try real fuel yet, or av gas? best way to hook up a electric pump is off the ignition switch, some put a extra off under seat for theft. needing a pressure regulator is based on which pump(which psi) you chose.
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Re: 6 Volt Electric Fuel Pump Conversion.
I've vapor locked with non-ethanol fuel before and I drive it in enough places that airports won't always be available, let alone convenient.
I'll wire it up from a relay that is triggered by a combination of the ignition switch and oil pressure shutoff switch. When I go to start it there will not be any oil pressure, so I'll have switch to bypass the shutoff switch so I can prime it.
Understand about the need for a pressure regulator based on the PSI of the pump. That's why I'm hoping someone has already figured out a combination of components that work well together.
Doug
Sacramento Area
1943 Willys MB
1943 GPW-125334 (Sold)
1962 M170
1959 Willys Wagon
Sacramento Area
1943 Willys MB
1943 GPW-125334 (Sold)
1962 M170
1959 Willys Wagon
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- G-Sergeant
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Re: 6 Volt Electric Fuel Pump Conversion.
I'm going to say there is something else going on here.
I'm wondering id your pump might be a bit weak, after all they are getting old nowadays.
I'm regularly in much hotter temps (closer to 120ºF) and have never faced vapour-lock.
maybe im lucky??
I do tend to run with a full tank of fuel, not sure what effect this would have.
amazon do sell a 6v fuel pump https://www.amazon.com.au/AUTOKAY-Elect ... B08HQP833N
you could add it in before the mechanical pump, that way you could use the mechanical pump until something goes awry
the just power up the electric, possibly hooking it up with a toggle switch under the dash
bot pumps will be able to push/pull fuel through each other without any hassle.
I'm wondering id your pump might be a bit weak, after all they are getting old nowadays.
I'm regularly in much hotter temps (closer to 120ºF) and have never faced vapour-lock.
maybe im lucky??
I do tend to run with a full tank of fuel, not sure what effect this would have.
amazon do sell a 6v fuel pump https://www.amazon.com.au/AUTOKAY-Elect ... B08HQP833N
you could add it in before the mechanical pump, that way you could use the mechanical pump until something goes awry
the just power up the electric, possibly hooking it up with a toggle switch under the dash
bot pumps will be able to push/pull fuel through each other without any hassle.
if you try to fail and succeed, what have you done?
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Re: 6 Volt Electric Fuel Pump Conversion.
Seth
******
1944 MB 349858, 20620361
1942 MBT 10968 viewtopic.php?f=18&t=149552
1942 MBT 15799, USA 0217497 viewtopic.php?f=18&t=225199
MVPA # 8587
Com / Inst. SMEL
CFII - ASEL
KI5LYB
Collecting Willys Engine Info. Please send me Engine #, Casting Date & Machining Date if known
******
1944 MB 349858, 20620361
1942 MBT 10968 viewtopic.php?f=18&t=149552
1942 MBT 15799, USA 0217497 viewtopic.php?f=18&t=225199
MVPA # 8587
Com / Inst. SMEL
CFII - ASEL
KI5LYB
Collecting Willys Engine Info. Please send me Engine #, Casting Date & Machining Date if known
- tamnalan
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Re: 6 Volt Electric Fuel Pump Conversion.
Doug - I'm wiring in a 6v pump I bought from Summit racing. I'll do as the others say and leave the mechanical pump in. The electric booster makes reaching places like Imogene Pass more confident.
Alan W. Johnson
_______________
MB, 201453, "Lt Bob"
MB, 1942, not stock
M-100, Sep 1951
MB-TD, Mar 2012
Ford 91C, 1939
_______________
MB, 201453, "Lt Bob"
MB, 1942, not stock
M-100, Sep 1951
MB-TD, Mar 2012
Ford 91C, 1939
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Re: 6 Volt Electric Fuel Pump Conversion.
The TM shows that the fuel pressure spec is 4.5 PSI. The Amazon pump shows its pressure is from 4 to 6 psi. Should work. Easy to add in a pressure regulator if you experience any flooding if the pump you get is more towards the 6psi range.
https://www.summitracing.com/parts/mrg-9710
Best to mount the pump as close to the tank as possible.
Chi-com components are not usually long lived, so I would try to find one old stock or made somewhere else. Also, run it with the mechanical pump, no need for a bypass switch then, plus it will still run if the electric pump craps out.
Summit has this Carter brand switch; in the Questions section a guy posted a pic of a factory wiring diagram. You can follow it and connect the wire that goes to the starter solenoid to the starter side of the foot switch. This will turn the pump on while cranking and/or once 7 psi is met. The switch can be mounted in one of the oil galley plugs on the side of the block. Be sure to fuse the wiring close to the ignition switch.
https://www.summitracing.com/parts/crt-a68301
It should be rather easy to remove the steel line from the bottom of the tank (After draining it so it does not flood out). Then install a barbed compression fitting in where the tube went:
https://www.summitracing.com/parts/rnb- ... 262ccc615a
A fitting is available to put on the end of the fuel line that used to connect to the tank. A slight bend should allow it to fit and then connect to the outlet of the pump:
https://www.discounthydraulichose.com/2 ... C%20%242.6
A local parts store should have these fittings. Barbed 5/16" hose to male and female 5/16" inverted flare. You can get them in 90* elbows, too.
https://www.summitracing.com/parts/mrg-9710
Best to mount the pump as close to the tank as possible.
Chi-com components are not usually long lived, so I would try to find one old stock or made somewhere else. Also, run it with the mechanical pump, no need for a bypass switch then, plus it will still run if the electric pump craps out.
Summit has this Carter brand switch; in the Questions section a guy posted a pic of a factory wiring diagram. You can follow it and connect the wire that goes to the starter solenoid to the starter side of the foot switch. This will turn the pump on while cranking and/or once 7 psi is met. The switch can be mounted in one of the oil galley plugs on the side of the block. Be sure to fuse the wiring close to the ignition switch.
https://www.summitracing.com/parts/crt-a68301
It should be rather easy to remove the steel line from the bottom of the tank (After draining it so it does not flood out). Then install a barbed compression fitting in where the tube went:
https://www.summitracing.com/parts/rnb- ... 262ccc615a
A fitting is available to put on the end of the fuel line that used to connect to the tank. A slight bend should allow it to fit and then connect to the outlet of the pump:
https://www.discounthydraulichose.com/2 ... C%20%242.6
A local parts store should have these fittings. Barbed 5/16" hose to male and female 5/16" inverted flare. You can get them in 90* elbows, too.
43 Ford GPW 92098
53 Dunbar Kapple M100
Sold: 61 CJ-5, 41 T207 WC-1 Dodge closed cab pickup
MVPA #8266
USMC Tanker (1811, 1812), 85-93
ASE Automotive Master tech, former Chrysler-Jeep Level 4 Mastertech, CA state EA smog license
53 Dunbar Kapple M100
Sold: 61 CJ-5, 41 T207 WC-1 Dodge closed cab pickup
MVPA #8266
USMC Tanker (1811, 1812), 85-93
ASE Automotive Master tech, former Chrysler-Jeep Level 4 Mastertech, CA state EA smog license
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Re: 6 Volt Electric Fuel Pump Conversion.
Alan and Marty thanks.
Alan, I think I will be seeing you on the upcoming convoy.
Cheers, Doug
Alan, I think I will be seeing you on the upcoming convoy.
Cheers, Doug
Doug
Sacramento Area
1943 Willys MB
1943 GPW-125334 (Sold)
1962 M170
1959 Willys Wagon
Sacramento Area
1943 Willys MB
1943 GPW-125334 (Sold)
1962 M170
1959 Willys Wagon
- JAB
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- Location: under the jeep in North Prairie, WI
Re: 6 Volt Electric Fuel Pump Conversion.
The original fuel line is the ground for the sending unit, so if you use rubber fuel hose you'll need to ground the tank.
-Jeff
GR8GPN2U!!!
GR8GPN2U!!!
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Re: 6 Volt Electric Fuel Pump Conversion.
Alan,
That is a beautiful picture of your jeep there at the pass !!!
Outstanding
Best Regards,
Ray
- JAB
- G-General
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Re: 6 Volt Electric Fuel Pump Conversion.
I was there, many years ago, with my CJ5, and I'm convinced, based on the reaction of the woman involved, that we interupted a semi-nude modeling photo shoot. We stopped, took a picture of the jeep in the scenic setting, and went down the other side. They were patiently waiting for us to leave.
-Jeff
GR8GPN2U!!!
GR8GPN2U!!!
- tamnalan
- G-Lieutenant General
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Re: 6 Volt Electric Fuel Pump Conversion.
Yes indeed! Great trip! Great to meet you, Bob, Tom and Dean. I got some new friends!!
Alan W. Johnson
_______________
MB, 201453, "Lt Bob"
MB, 1942, not stock
M-100, Sep 1951
MB-TD, Mar 2012
Ford 91C, 1939
_______________
MB, 201453, "Lt Bob"
MB, 1942, not stock
M-100, Sep 1951
MB-TD, Mar 2012
Ford 91C, 1939
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