electric fuel pump

[poppa]

Thinking of going with an electric fuel pump , pro's/con's ?? Could I put one in (on the same line as my mechanical one) and use the mechanical one most times and electric for when it sits for a long time?? In other words , would the electric one "push" through the mechanical one and would the mechanical one "pull" through the electrical one?? Any recommendations? 69 with a 440 (will go to a 512 when the stars align correctly for me) 4 spd with a 6 pak. Thanks for taking the time to read this

[red79]

Man people wire an inexpensive electric pump in the fuel line leading to the mechanical pump. You can switch it on to fill the carb bowl after sitting for a long time, then switch it off and let the mechanical pull through as you described. Saves extra cranking if you don't dive the car often.

[tan top]

I have ,  you need one that flows  through / suck through when off  , the electric  solenoid pumps  are what you need , 

[John_Kunkel]

  The gear motor pumps (inexpensive) won't allow fuel to be pulled through them but all mechanical pumps will allow the electric pump to push through them.

[mopar0166]

love my holley pump 

[poppa]

mopar0166 , which pump/set up do you have?

[ACUDANUT]

Man people wire an inexpensive electric pump in the fuel line leading to the mechanical pump. You can switch it on to fill the carb bowl after sitting for a long time, then switch it off and let the mechanical pull through as you described. Saves extra cranking if you don't dive the car often.

Not a reasonable thought. Just my 2 cents
You can do this by pouring fuel down the carb before you try to start. 

[70sixpkrt]

I have a Carter electric pump that I'm going to install next month. My car is hard to start after sitting for awhile. My buddy put this pump in his Coronet and no problems.

[myk]

Man people wire an inexpensive electric pump in the fuel line leading to the mechanical pump. You can switch it on to fill the carb bowl after sitting for a long time, then switch it off and let the mechanical pull through as you described. Saves extra cranking if you don't dive the car often.

Not a reasonable thought. Just my 2 cents
You can do this by pouring fuel down the carb before you try to start. 

No one wants to have to open their hood, pop off their air cleaner, then force feed their 'carb to start the thing (which is dangerous IMO) every time they want to go for a drive.  The supplementary fuel pump is a great idea for added convenience...

[ACUDANUT]

love my holley pump 

ME too 

[Troy]

Man people wire an inexpensive electric pump in the fuel line leading to the mechanical pump. You can switch it on to fill the carb bowl after sitting for a long time, then switch it off and let the mechanical pull through as you described. Saves extra cranking if you don't dive the car often.

Not a reasonable thought. Just my 2 cents
You can do this by pouring fuel down the carb before you try to start. 

Yeah, my Challenger has a Six Pack that constantly goes dry when sitting. Popping open the hood, removing the air cleaner lid, pouring in gas through the vents, replacing the lid, etc. is a royal pain just to start a car. I also have a Carter pump to install before summer. It's the type that will allow the mechanical pump to pull through it. I have a timed switch that will run the pump for about 3 seconds when the key is turned.

Troy

[1974dodgecharger]

does it go dry that bad?  I figure you pump the gas pedal and try it that way to start? I do that and its fine......

[ottawamerc]

I have both pumps running continuously, the electric is at the tank and the usual mechanical at the block. I wired my electric pump thru an oil pressure switch so if there is ever a failure or accident it would turn off and not continuously pump fuel to a potential fire! I would like to put that timed relay in too though cause mine is hard to start after it sits for a long while. One other draw back to the electric is the noise.

Scott

[Troy]

does it go dry that bad?  I figure you pump the gas pedal and try it that way to start? I do that and its fine......

Oh yeah. I may be the lucky one but between the ethanol in the gas and the heat from the Six Pack it will completely boil/evaporate all the fuel in the bowls. Pumping the pedal does nothing if there isn't any gas to squirt. I've used 3 different "known good" mechanical fuel pumps and none will pull enough fuel to start the car in a reasonable amount of time. I don't like changing starters either! In the past I'd pull the air cleaner and pour some gas in the center carb. Basically, as soon as the engine starts, the mechanical pump will fill the bowls and keep it running (90% of the time at least). I guess my only other option is to see if I can spin the engine faster on the starter. The pass through electric pump is a simple solution and it's quiet so I took the easy way out.

Oh, and my electric pump has a switch fed from the tach signal so if the engine stops the pump does too. Same reasoning as above.

Troy

[1974dodgecharger]

huh troy that's a good idea on the tach signal one....

[poppa]

Any p/n's? Seems like every one I clicked on ends up a vane or gear one??? Do I need a "return" or reg with this?

[Troy]

I forgot about the heat soak every time I shut the car off for more than a few minutes. The first year I had it I drove it to Carlisle and the Mopar Nationals and both trips had temperatures in the high 90s. A stop for gas would take about 45 minutes because I'd have to pop the hood and wait for the engine to cool before any new gas would stay liquid all the way to the carbs. On the highway I'd just stop more often (about half a tank) and pay at the pump to keep the stops short. Even on trips close to home I'd have to be aware of stopping after sitting in traffic or idling for very long.

One I have is: CARTER P74029
You *CAN NOT* run the car off this. It's simply not big enough to supply a big block on its own. Google it and you'll find lots of examples of installs. I have it on a Six Pack which has a return line from the factory.

This is the switch I have: http://www.ebay.com/itm/321185373287

Troy

[myk]

I still say just go with a single electric pump rated at about 5 to 6 psi.  With a 'carb spacer, properly routed fuel lines and the e-pump, your fuel system will never be the source of your hard-start problems again. 

[70sixpkrt]

I have a Carter 4954 electric pump which I'm going to install hopefully next month. My buddy is using the same pump on a 1969 Coronet with 550hp and has no problems.

[ottawamerc]

does it go dry that bad?  I figure you pump the gas pedal and try it that way to start? I do that and its fine......

Oh yeah. I may be the lucky one but between the ethanol in the gas and the heat from the Six Pack it will completely boil/evaporate all the fuel in the bowls. Pumping the pedal does nothing if there isn't any gas to squirt. I've used 3 different "known good" mechanical fuel pumps and none will pull enough fuel to start the car in a reasonable amount of time. I don't like changing starters either! In the past I'd pull the air cleaner and pour some gas in the center carb. Basically, as soon as the engine starts, the mechanical pump will fill the bowls and keep it running (90% of the time at least). I guess my only other option is to see if I can spin the engine faster on the starter. The pass through electric pump is a simple solution and it's quiet so I took the easy way out.

Oh, and my electric pump has a switch fed from the tach signal so if the engine stops the pump does too. Same reasoning as above.

Troy

A Tach signal? thats friggin cool and waaay better than the oil pressure switch that keeps my pump off! Tell me more about this please

Scott

[Troy]

does it go dry that bad?  I figure you pump the gas pedal and try it that way to start? I do that and its fine......

Oh yeah. I may be the lucky one but between the ethanol in the gas and the heat from the Six Pack it will completely boil/evaporate all the fuel in the bowls. Pumping the pedal does nothing if there isn't any gas to squirt. I've used 3 different "known good" mechanical fuel pumps and none will pull enough fuel to start the car in a reasonable amount of time. I don't like changing starters either! In the past I'd pull the air cleaner and pour some gas in the center carb. Basically, as soon as the engine starts, the mechanical pump will fill the bowls and keep it running (90% of the time at least). I guess my only other option is to see if I can spin the engine faster on the starter. The pass through electric pump is a simple solution and it's quiet so I took the easy way out.

Oh, and my electric pump has a switch fed from the tach signal so if the engine stops the pump does too. Same reasoning as above.

Troy

A Tach signal? thats friggin cool and waaay better than the oil pressure switch that keeps my pump off! Tell me more about this please

Scott

Keep reading! I posted the link in the next message. Only downside is it cost more than the pump...

I also own one of the bigger carter electrics (mentioned earlier I believe) but I'm using it on my run test stand. I don't think it's terribly loud but you need a regulator and I didn't want to deal with that on the Challenger. However, if I had installed it and the Firecore RTR I bet the car wouldn't be such a pain in the rear!

Troy

[mopar0166]

Looks like I never responded,  I have a Holley blue pump and adjustable regulator with return.  it mounted just forward of the gas tank toward the bottom of the rear seat.

[deepockets]

I went with the Mallory 110. I use it without a mechanical and no regulator or return line is necessary. It's preset to run at 7.5 lbs. It's so quiet, I sometimes wonder if it's running. Works great with the 510ci. 6 pack.

[69Chrgr]

I use a Weldon pump mounted near the back of my car. They also make aircraft pumps. After the others left me high and dry and said screw it and spent money to get a good pump.

[mopar0166]

I still have my holley blue pump, works fine but I'm going to change the mount while I have the rear seat out.  I think that will make a difference as far as noise is concerned.  I don't mine a little noise but the rear passengers hate the buzzing of the pump. 

[morepower]

if it were me i'd install that new aeromotive kit that goes in the tank, quieter, the pump stays cooler, nice clean install.

but other than that i am a fan of the mallory comp 140 pumps you can probably get by with a comp 110 if you're car isn't too modified performance wise