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Fuel lines and a Carter 4070

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  • #1

    Fuel lines and a Carter 4070

    Hey Guys,

    Planning to plumb up my new carter 4070 fuel pump tomorrow.

    Just had a little look at my new pump and my rather torn apart mk1 and noticed the following:

    The pump runs 8mm (5/16") barbed fittings.

    The mk1 is plumbed with 6mm (1/4") OD steel tubing and 6mm (1/4") ID hoses.

    I know a few of you run these carters and I was wondering if you did the following:

    - squeezed 1/4" ID hose onto the 5/16" barbs?

    - swapped the whole system to 5/16" ID (including the steel lines to 5/16" OD)?

    - swapped out the carter barbs for 1/4" OD ones?


    I reckon the barb on my weber is 5/16" (8mm) too.

    Sorry if this sounds a bit dumb, but Ive plumbed air and water, but never fuel!!!

    any help would be great!

    cheers

    j
    Tags: 1/4, 5/16, carter, fuel, pump
  • #2
    Rubber tubing should easily stretch the extra 1/16th.

    Are you mounting the carby down low at the back of the car where it will work best. It needs to be gravity fed from the fuel tank so it's self priming.

    Cheers

    Paul
    Last edited by sports racer; 15-11-2014, 01:42 AM.
    1978 MK1 2.0 16v http://www.vwwatercooled.com.au/foru...-46488-70.html
    1991 MK2 GTI 2.0 8v, white (RIP) and it's red replacement http://www.vwwatercooled.com.au/foru...gti-42078.html
    1997 MK3 CL http://www.vwwatercooled.com.au/foru...ml#post1292061
    2001 & 2002 Bora 4motion. http://www.vwwatercooled.com.au/foru...st-123823.html

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    • #3
      Why would he mount the carby at the back of the car.Maybe its aircooled.

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      • #4
        Originally posted by regularjohn View Post
        I know a few of you run these carters and I was wondering if you did the following:

        - squeezed 1/4" ID hose onto the 5/16" barbs?

        - swapped the whole system to 5/16" ID (including the steel lines to 5/16" OD)?

        - swapped out the carter barbs for 1/4" OD ones?
        All of the above and the some. Easiest just to buy new barbs for the carter. They're only a few dollars at Enzed or Pirtek.
        79 MK1 Golf Wreck to Race / 79 MK1 Golf The Red Thread / 76 MK1 Golf Kamei Race Car
        7? MK1 Caddy
        79 B1 Passat Dasher Project
        12 Amarok

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        • #5
          Hey guys

          Thanks so much for the tips!

          Sports racer - yes i was planning on mounting under the car right next to the tank. Its pretty tight in there, but should fit with a bit of playing around.

          Pete - thanks for the tip, Ill order some up! Seems like a tapered thread, would I be correct?

          j

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          • #6
            Thread size on the carter is 1/4" NPT (Yep, it's tapered)

            Enzed or Pirtek will have these on the shelf.

            Pick up some stainless steel hose clamps while you're there, they're much better quality than the ones found in auto parts stores.
            79 MK1 Golf Wreck to Race / 79 MK1 Golf The Red Thread / 76 MK1 Golf Kamei Race Car
            7? MK1 Caddy
            79 B1 Passat Dasher Project
            12 Amarok

            Comment

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