Elwood blues
Well-Known Member
Any real advantage to having an I tank fuel pump? Got a 5.7 hemi I'm installed and wondering if I can just use an inline fuel pump with the efi or if I have to use a in tank fuel pump.
Inline fuel pump vs tank fuel pump
- Thread starter Elwood blues
- Start date
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Cal Tonsley
Well-Known Member
An in tank pump will pretty much always be more efficient and quieter!
I don't know about quieter. The in tank pump will probably stay cooler for sure. But external pumps were used for years and still are and you cannot hear them in most applications. As long as they are isolated well, they are quiet.
Elwood blues
Well-Known Member
As long as it will work the same as the in tank one I'm leaning more towards an in line pump due to cost wise
They're marketing inline Fuel Pumps for racing and Hi perf use. Having had a coupla fuel pumps crap out at the Races, I cant imagine dropping a fuel tank to remove an inline Fuel pump when I can just unbolt my external in half the time.
Plus the cost of the internals/tank is not competitive with just buying an external.
Plus the cost of the internals/tank is not competitive with just buying an external.
Elwood blues
Well-Known Member
That's the problem I'm talking about I dont wanna drop the money to buy the new tank for inland oil ne fuel pump when I could use the tank I have and just put and inline pump on
Then do it. It'll work fine. Mount the pump as low as possible in relation to the tank. In other words, try and make it a gravity feed to the pump. That way, the pump doesn't work as hard and will last a long time.
cudaspaz
Well-Known Member
I’ve ran a fuel cell and burned up several in line fuel pumps.
First a Jegs, then a Holley blue, then two Holley HP’s so I finally bought an Aeromotive fuel cell with the stealth 340 inline pump and ran a return regulator and I can’t barely hear my fuel pump with engine not running and pump priming.
Have not had an issue yet in a couple years where my inline pumps would burn out within 6 months if that.
Make sure you run your pump through a relay so you don’t burn up switches/wiring.
First a Jegs, then a Holley blue, then two Holley HP’s so I finally bought an Aeromotive fuel cell with the stealth 340 inline pump and ran a return regulator and I can’t barely hear my fuel pump with engine not running and pump priming.
Have not had an issue yet in a couple years where my inline pumps would burn out within 6 months if that.
Make sure you run your pump through a relay so you don’t burn up switches/wiring.
Sup dawg? How you been? Ain't seen you in a while. Merry Christmas!
cudaspaz
Well-Known Member
Merry Christmas to you as well!
Been super busy with very limited down time but it’s all good.
Spend most of my free time deer hunting which is usually limited to one power hour a week in the evenings if I’m lucky.
famous bob
mopar misfit
Agree with this ^^^^^^^^^^^^^^^^^^^^^^^
Intank pumps would be a pain in the a$$ , unless u cut a hole in the trunk floor for access , before hand.
I`ve run inline pumps for 40 yrs. and never had a failure ! My current fuel inj. inline cant be heard with the engine running--------
stroked340
Well-Known Member
Been using a Holley black pump for 8 years now no issues to speak of and it's LOUD just the way I like it, so I know its on
MomsDuster
Well-Known Member
I believe it’s really all a matter of personal preference. If installed properly, mounted as low as possible and an adequate return line etc. an inline pump is perfectly fine. I myself had to replace my tank anyway so I chose the in tank route. I’m not a racer so quick access really not an issue for me. Just my .02
Been running a Holley Black Pump for 5 years with no problems. Still can't believe it. And that's with E85 occasionally.
mopardude318
Well-Known Member
I like the Aeromotive stealth fuel cells with the pump in the tank.
cudaspaz
Well-Known Member
Yeah the only thing I wasn’t doing was running a return regulator and I was burning out pumps.
After two Holley HP’s I revamped the whole set up with aeromotive cell with in tank stealth pump, return reg and 1/2” rubber lines.
DionR
Well-Known Member
Not an expert on this topic, but I can think of two potential advantages to an in-tank pump.
1. It is sitting in a body of fluid and should run cooler (provided there is enough gas in the tank).
2. It has the potential to use a bucket setup where a venturi feature sucks gas out of the bottom of the tank and keeps the buck full even when the gas tank is almost empty.
Th first probably isn’t much of an advantage unless maybe pavement temps reach +105.
The second is much bigger, but only if you can use some kind of OEM pump as none of the aftermarket setups use anything like that. Closest I have seen is the aeromotive pump with the foam. In the case of a car that corners well, I think this is necessary to run down to a quarter tank or less on a road course. I have heard of issues with every aftermarket system out there in this situation. Oh, and this is with EFI, carbs carry their own reserves and are much less susceptible to momentary hiccups due to a pickup uncovering.
I would have argued that in-line pumps don’t seem to last but several here seem to have had good luck and Ford ran some OEM setups so I would have had to agree I was wrong. Must be an issue of install and design that cause longevity issues. I would argue thought, that an in-tank pump does seem to be easier to make last as there seems to be fewer potential design issues.
Adjustable regulator with a return to tank, and by this pump. problems solved.
https://www.amazon.com/dp/B002EPUPUO/?tag=fabo03-20
Inexpensive but top shelf!
As long as you use the sleeve, that comes with the pump, it quit!!!
For example, at 80 PSI the standard 255 lph pump will flow around 132 liters (35 gallons) per hour. At that same 80 PSI the equivalent HP (high pressure) fuel pump will flow over 210 liters (50 gallons) per hour. Walbro GSL392 255LPH High Pressure Inline Fuel Pump are extremely popular upgrades to vehicles with engine and performance modifications, supporting up to 650 horse power. - Pressure: 255 (LPH) Liters Per Hour- AMP: 20
https://www.amazon.com/dp/B002EPUPUO/?tag=fabo03-20
Inexpensive but top shelf!
As long as you use the sleeve, that comes with the pump, it quit!!!
For example, at 80 PSI the standard 255 lph pump will flow around 132 liters (35 gallons) per hour. At that same 80 PSI the equivalent HP (high pressure) fuel pump will flow over 210 liters (50 gallons) per hour. Walbro GSL392 255LPH High Pressure Inline Fuel Pump are extremely popular upgrades to vehicles with engine and performance modifications, supporting up to 650 horse power. - Pressure: 255 (LPH) Liters Per Hour- AMP: 20
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port-holio
Well-Known Member
Unless you have some kind of baffle structure in the tank, get used to keeping the tank above half full or the engine will stall when the pickup is uncovered when you go around corners.
I've got the Walbro 255 externally mounted under the passenger seat right now, with a cobbled up factory pickup. I'm probably going to go with some kind of in-tank set up because:
- I've got the typical sending unit ring/gasket drip
- The pump noise is really annoying
- There's some kind of mis match with the replacement sending unit and the fuel gauge makes no sense
- Unbaffled tank is downright dangerous when it starts getting low and stalls at bad times
I've got the Walbro 255 externally mounted under the passenger seat right now, with a cobbled up factory pickup. I'm probably going to go with some kind of in-tank set up because:
- I've got the typical sending unit ring/gasket drip
- The pump noise is really annoying
- There's some kind of mis match with the replacement sending unit and the fuel gauge makes no sense
- Unbaffled tank is downright dangerous when it starts getting low and stalls at bad times
Electric pump like to push NOT pull fuel. your to far away from the tank!
all i know is this pump is the quiet electric fuel pump i have ever owned, and the most powerful one.
Would by it again if i need to.
I have the stock fuel tank and pick up with a hole and fitting to sent the return fuel back to the tank.
I have had as little as a 1/16 of a tank(by my stock gauge) and never ran out of fuel(straight line launch)
If its leaking out of the sending unit for the fuel tank you need to replace the gasket or find out why it don't have a smooth mating surface to seal on.
all i know is this pump is the quiet electric fuel pump i have ever owned, and the most powerful one.
Would by it again if i need to.
I have the stock fuel tank and pick up with a hole and fitting to sent the return fuel back to the tank.
I have had as little as a 1/16 of a tank(by my stock gauge) and never ran out of fuel(straight line launch)
If its leaking out of the sending unit for the fuel tank you need to replace the gasket or find out why it don't have a smooth mating surface to seal on.
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