In tank fuel pump sending unit
02-28-2018, 02:10 PM
#1
In tank fuel pump sending unit
Hey guys. I keep killing my external electric fuel pump, and have decided to go with an electric in-tank pump.
Questions:
Are the fuel tanks all the same from every year?
What sending unit/pick up would I need? My car is a Canadian car and has no computer.
What fuel pump would be recommended to keep up with a 435 hp Qjet car?
Thanks
Questions:
Are the fuel tanks all the same from every year?
What sending unit/pick up would I need? My car is a Canadian car and has no computer.
What fuel pump would be recommended to keep up with a 435 hp Qjet car?
Thanks
04-12-2018, 06:19 PM
#2
Re: In tank fuel pump sending unit
Why do you keep going through external fuel pumps?
I have used a Holley "RED" electric fuel pump for 8 years without a single problem. I use the "RED" pump because it is regulated to 5-7 psi right out of the pump. No need for an extra external fuel pressure regulator.
I have used a Holley "RED" electric fuel pump for 8 years without a single problem. I use the "RED" pump because it is regulated to 5-7 psi right out of the pump. No need for an extra external fuel pressure regulator.
04-12-2018, 07:59 PM
#3
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Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: In tank fuel pump sending unit
Carter M6626 block mounted mechanical. Less than $20.00
04-25-2018, 11:35 AM
#4
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Re: In tank fuel pump sending unit
"External pumps don't last". What's the problem ? Do you have a filter in front of the pump first ? Is there junk inside the failed pump to show signs of crap from the tank ?
Why make life more difficult with an in tank pump ?
Last edited by 83 Gman; 04-25-2018 at 11:39 AM.
04-25-2018, 11:59 AM
#5
Re: In tank fuel pump sending unit
I never ran a pre filter.....I just finished installing a pre filter with a Walbro external. Let's see how it goes this time.
I also wonder if my ground is good enough.
Thoughts on running a ground wire right to the battery instead of a chassis ground?
I also wonder if my ground is good enough.
Thoughts on running a ground wire right to the battery instead of a chassis ground?
04-25-2018, 12:10 PM
#6
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Re: In tank fuel pump sending unit
What model Walbro pump ?
If you want to go one step further, you can always add a relay to operate the pump.
04-25-2018, 12:51 PM
#7
Re: In tank fuel pump sending unit
This one from Holley (it's a relabeled Walbro)
https://www.holley.com/products/fuel...s/parts/12-927
Hopefully it supplies enough fuel.
If not, I might try a Walbro 255 and see if my regulator will dial the pressure down...
https://www.holley.com/products/fuel...s/parts/12-927
Hopefully it supplies enough fuel.
If not, I might try a Walbro 255 and see if my regulator will dial the pressure down...
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04-25-2018, 02:30 PM
#8
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Re: In tank fuel pump sending unit
That pump makes more pressure than a Q-Jet can handle. You will need a pressure regulator with it. Carbs only take maximum 7 psi to them. Find out if that pump has an internal relief, as too much back pressure can cause it to burn out/overheat.
It does look like a straight up vane pump. A Holley pump is a vane style but has a relief in it.
Here's one using no regulator. Also look on different sites for a lower price.
https://www.holley.com/products/fuel...parts/12-801-1
It does look like a straight up vane pump. A Holley pump is a vane style but has a relief in it.
Here's one using no regulator. Also look on different sites for a lower price.
https://www.holley.com/products/fuel...parts/12-801-1
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