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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: electronic fuel pump conversion on carby engine? (help)
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Tue, 27 January 2004 01:56
 
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the weber is from a 1974 Fiat 124 sports 
but it's vaguely like a DGV type carb.
the factory setup for a weber carb has fuel going into the carb (into the little bowl where the filter is, but before the float needle) which comes from the fuel pump.
it also has a smaller line leaving the carb (from this same small bowl before the float needle) and this is the return line that goes to a pressure regulator, to keep the pressure at about 3-4psi.
you have a few choices.
run an unregulated pump (carby not efi) to the inlet of carb, then have the outlet running to a pressure regulator, and then back to the tank.
you run an unregulated pump near the fuel tank, and have a pressre regulator immediately after it, then have the retun going to tank, and then either run the reg outlet to the carb inlet AND outlet, or block the outlet and only run it to the inlet.
OR
use an internally regulated fuel pump, and run the pumps outlet to both the inlet and outlet of the carb, or block off the carb outlet and only run the fuel line to the inlet.
i have blocked my outlet and have an internally regulated pump running to the carbs inlet. i never have problems with vapour lock as the pump is right next to the tank, and if fuel evaporates from the carb float bowl, it takes maybe 5-10 seconds to fill it before starting the car.
Cya, Stewart
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| | Subject | Poster | Date |
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electronic fuel pump conversion on carby engine? (help)
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tercelboy | Mon, 26 January 2004 02:02 |
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Re: electronic fuel pump conversion on carby engine? (help)
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wagonist | Mon, 26 January 2004 02:53 |
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Re: electronic fuel pump conversion on carby engine? (help)
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tercelboy | Mon, 26 January 2004 06:52 |
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Re: electronic fuel pump conversion on carby engine? (help)
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wagonist | Mon, 26 January 2004 22:11 |
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Re: electronic fuel pump conversion on carby engine? (help)
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oldcorollas | Tue, 27 January 2004 01:56 |
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Re: electronic fuel pump conversion on carby engine? (help)
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tercelboy | Tue, 27 January 2004 06:41 |
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Re: electronic fuel pump conversion on carby engine? (help)
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oldcorollas | Mon, 26 January 2004 07:00 |
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Re: electronic fuel pump conversion on carby engine? (help)
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tercelboy | Mon, 26 January 2004 07:06 |
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Re: electronic fuel pump conversion on carby engine? (help)
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tercelboy | Thu, 29 January 2004 13:20 |
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Re: electronic fuel pump conversion on carby engine? (help)
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oldcorollas | Thu, 29 January 2004 15:40 |
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Re: electronic fuel pump conversion on carby engine? (help)
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7mgtema71 | Fri, 30 January 2004 00:06 |
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Re: electronic fuel pump conversion on carby engine? (help)
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oldcorollas | Fri, 30 January 2004 11:34 |
