Re: in tank pump and fuel regulator install questions
[Re: demon]
#1368603
01/12/13 11:38 PM
01/12/13 11:38 PM
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Joined: Mar 2007
Posts: 3,288 West Coast, USA
jbc426
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master
Joined: Mar 2007
Posts: 3,288
West Coast, USA
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I'd skip the whole tank cut and weld and plumb a simple surge tank system. It's easier, more effective and probably costs about the same or less.
You will still need a low pressure fuel pump mounted near the tank with a return line, but can use your exsisting fuel line to the front of the car to supply fuel to the surge tank. This side of the system operates at near 0 psi with a high fuel flow volume.
It will supply a rock solid fuel steam even when you are down to the last few gallons. Any bubbles/cavitation are quickly pumped back to the tank in the return line and kept away from the high presure pumps inlet.
If you look closely in this picture, you can see the entire high pressure side of my fuel injection system, surge tank with internal pump and top mounted bypass regulator, billet fuel rails and a few feet of AN line. Simple to install too.
My fuel tank is bone stock with the exception of a 3/8's fuel line and return fitting plumbed on the sending unit.
Last edited by jbc426; 01/13/13 01:17 AM.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: in tank pump and fuel regulator install questions
[Re: jbc426]
#1368604
01/12/13 11:44 PM
01/12/13 11:44 PM
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Joined: Mar 2007
Posts: 3,288 West Coast, USA
jbc426
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master
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West Coast, USA
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It works similar to this schematic.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: in tank pump and fuel regulator install questions
[Re: jbc426]
#1368605
01/12/13 11:45 PM
01/12/13 11:45 PM
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Joined: Mar 2007
Posts: 3,288 West Coast, USA
jbc426
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master
Joined: Mar 2007
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West Coast, USA
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The surge tank I used looks like this inside. You can also get them plumbed for an external high pressure pump like shown in the diagram.
It's probably the easiest, most effective way to retrofit a high performance EFI fuel system into previously non-EFI cars.
Last edited by jbc426; 01/12/13 11:48 PM.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: in tank pump and fuel regulator install questions
[Re: demon]
#1368606
01/13/13 01:00 AM
01/13/13 01:00 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Posts: 52,972
Romeo MI
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As said .. put a sump in it... the front of the tank is a BAD spot to mount your pump UNLESS you run the pick up to the rear... the fuel WILL be in the rear on acceleration... if you go with the sump DONT cut the area out where the sump is welded on... put 2 or 3 2" holes in the bottom of the tank so the bottom of the tank acts like a surge wall(as you accelerate the fuel cant come out of the sump.. if you are mounting the pump internally you might want to reinforce the top of the tank so you have a access panel(for the screw) ![](/ubbthreads/images/graemlins/wave.gif)
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Re: in tank pump and fuel regulator install questions
[Re: PC-CHARGER]
#1368608
01/13/13 01:22 AM
01/13/13 01:22 AM
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Joined: Mar 2007
Posts: 3,288 West Coast, USA
jbc426
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master
Joined: Mar 2007
Posts: 3,288
West Coast, USA
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Quote:
Very nice setup. I was just getting ready to refab my fuel cell with a different sump setup etc. but your two tank system looks like a nice alternative. I'll have to give this some more thought now.
Thanks
It's what all the high horsepower import tuners are using. It sure makes a lot of sense for retrofitting my old Mopar, too.
Plus, I don't have to mess with my fuel tank aside from changing and upgrading the sending unit to include a 3/8's return.
Above 600 + horspower, in-tank baffling would be a worthwhile addition, as would a second pump in the surge tank.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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