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Thread: In-Line Fuel Filter?

  1. #1
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    In-Line Fuel Filter?

    Hi all. I just finished a tune-up on my 46-48 Willys and would like to add a fuel filter. I ordered one from Kaiser Willys Auto Supply but unless I can come up with some adapters I won't be able to use it (re: item #8126300). Has anyone out there installed a generic in-line filter? If so, what did you use? I'd just go buy one but am concerned with making sure I get the correct flow. Many thanks - mj

  2. #2
    Super Moderator gmwillys's Avatar
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    Bohonkie,

    You can use the filter that you purchased, and adapt it to the inlet of your fuel pump, but most of us with questionable fuel tanks use the cheap plastic clear fuel filters. For the cheap filters, you would have to cut a small section of the hard fuel line and flair each end, then add a section of rubber fuel line on both sides to accept the fuel filter. This enables you to see what junk gets trapped, and if you have fuel flow.

    https://www.amazon.com/WIX-Filters-C...89225688&psc=1

  3. #3
    Super Moderator bmorgil's Avatar
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    I have that KW 8126300 filter on mine. It is period correct for the older Jeeps. The one gmwillys has sent the link on, is also on a few of my vehicles!

    The KW filter nearly bolts in. It goes between the pump and the carb. Most hang it right off the float bowl. You need a 1/8" pipe close nipple (use brass) and the original fuel line hooks right to it.
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  4. #4
    Senior Member 5JeepsAz's Avatar
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    front & center here
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  5. #5
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    Thanks everyone. I think I got it from here. mj

  6. #6
    Super Moderator gmwillys's Avatar
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    I was bass ackward about the placement of the KW filter. Bmorgil is 100% right on the money. It still isn't a bad idea to filter the fuel before the pump, especially on the military versions with the hand grenade sized filler neck for crap to fall in. The plastic filters are cheap insurance for keeping an eye on the health of the fuel system.

  7. #7
    Super Moderator bmorgil's Avatar
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    One thing to keep in mind when using a filter between the tank and the pump, is to use the largest filter you can fit. On the little 134's they don't need much fuel. But you should always be careful on the suction side. Some fuel pumps just wont pull through fuel very well. If you can, use a larger inlet and outlet than the line size you have, and adapt "up" to it. In other words if you have a 1/4 inch fuel line between the tank and the pump, use a 3/8" or even 1/2" inlet/outlet filter and adapt it to the 1/4" line. The suction side is not very strong. Too much resistance and it will give you trouble. As gm points out the old tanks can have everything you can imagine floating around in them! In any event if you don't at least have a filter between the carb and the pump you might be stranded some day even if all is new.

  8. #8
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    Really good information here. Thanks again!
    mj

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