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Thread: G63B Weber Swap-Fuel Pump Questions

  1. #1

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    1984 Dodge Ram 50
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    G63B

    G63B Weber Swap-Fuel Pump Questions

    Hey everyone, I'm staying with my parents for this week and I'm hell-bent on getting my Ram 50 running again. I've been pretty successful this run (especially when I realized that I had mounted the carb backwards) but still have a few questions I need assistance with before I proceed.

    1.) Fuel Pump Block Off
    I'll be switching to an electric pump. Since the mechanical pump won't be needed anymore I'm planning on deleting it, but haven't found what to use yet. What block off plate would you guys recommend for a g63b and where do you get it from?

    2.)Electric Fuel Pump Options
    I'm currently debating between getting a Carter and a CarBole fuel pump. I've heard rumors about CarBoles being unreliable, which would you guys recommend?

    3.)Electric Fuel Pump Mounting and Wiring
    I'm planning on mounting the fuel pump near the fuel tank, somewhere just after the stock fuel filter. Where is the best place to put it? Should I drill into the frame to mount it? Where is the best place to wire it up from?

  2. #2



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    Tucson, AZ USA
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    1987 Dodge Ram 50
    Engine

    G54B
    I'm not familiar with the 4G63/G63B fuel pump, but if it's similar/identical to the 4G54/G54B, a fuel pump block off plate for a big-block Chevy or small-block Ford should work. I'd advise getting an alloy/aluminum/cast version, as you may need to file down a couple edges slightly. I used one of these:
    https://www.speedmaster79.com/Univer...f-Plate-Chrome

    I really like the Carter P90091 electric pump for Weber carbs. Native PSI is perfect and the rotary "gerotor" design delivers smooth flow, no need for any pressure regulator.

    Best place to mount the pump is down low wherever practical near the tank. My longbed fuel tank is mounted to a rail across the front where I mounted my pump, not sure if shortbeds have anything similar.

    For wiring, use a relay triggered by the ignition key-on Run circuit, then the relay switches power directly from the battery (+) terminal to the pump. For safety, it's also advisable to run the trigger wire through an oil-pressure switch, or an inertia switch may be easier; this will cut power to the pump to avoid hosing down the scene of a crash with raw fuel in case of a crash that severs a fuel hose or pipe. See these threads for further tips and diagrams:

    http://www.mightyram50.net/vbulletin...ll=1#post82551

    http://www.mightyram50.net/vbulletin...ll=1#post70182
    1987 Dodge Ram 50 4G54 RWD longbed ("Elmo")
    1979 Lancia Beta Zagato spider ("Lola")
    1982 Lancia Beta Zagato spider ("Luigi")

  3. #3

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    G63B
    This guys channel is useful https://www.youtube.com/watch?v=8GjvRdssvFI
    I first wired mine using the oil pressure switch. I had troubles I thought were something else. I don't drive it a lot so it took me a while to realise i did not have those troubles in cool weather. Anyway I changed the system over to a wiring kit with relay and it doesn't give me those problems, which I now realise was the fuel pump cutting out because of how hot oil affected the pressure switch, any longer. And this is an inertia switch which I have not yet gotten or installed to shut it off in an accident. That channel has a vid demonstrating how they work and how to add them. https://www.ebay.com/itm/166629703151

    Here is how I mounted mine in front of the tank under the skirt driver side. I used 1/8 sheet metal saved the OE mounts and added them some welding involved. Make sure your gas is low when you do it. I plugged the return line where the hard line ends up in the engine bay. I used a gas rated hose that I plugged with a bolt after a silicon cap melted.
    Attached Images

  4. #4



    Array
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    Tucson, AZ USA
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    1987 Dodge Ram 50
    Engine

    G54B
    And FWIW here's how I mounted my Carter pump to the brace along the front of the fuel tank on my longbed:

    Attached Images
    1987 Dodge Ram 50 4G54 RWD longbed ("Elmo")
    1979 Lancia Beta Zagato spider ("Lola")
    1982 Lancia Beta Zagato spider ("Luigi")

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