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Where to find s 3/8 16 x 1/4 barbed fitting with STRAIGHT threads, (vent plug)-gctid809763

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    Where to find s 3/8 16 x 1/4 barbed fitting with STRAIGHT threads, (vent plug)-gctid809763

    I made the mistake of taking in my outdrive without swapping out the upper drain plug ( Alpha1). Long story short I ended up with another one. I want to replumb my drive oil reserve tank and can't find a 3/8" x 16 straight thread barbed fitting that's not NPT. I went to a big hardware store and the owner says I'm mot gonna find that easily. I can make my own using a soft 3/8 bolt, drilling it and grinding a barb on it but with no lathe I'd rather avoid that PITA if I can help it. I'm not worried about water intrusion as this drive sits way high always and lives on a trailer. Any brilliant suggestions

    #2
    Look at this page: https://www.hosco.net/catalog-of-pro...tings/adapters

    You can use a p/n 6-6T(F) - 3/8 NPS (M) X 3/8 NPT (F) adapter (3/4 way down the page) and screw in a 3/8 NPT X Hose Barb fitting on to that. As an alternative you can use an NPS to tube adapter (bottom of page). You may want to slightly flare the tube so the hose does not slip off.
    1999 3788, Cummins 270 "Freedom"
    2013 Boston Whaler 130 SS
    Anacortes, WA

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      #3
      I see said the blind man, thanks. I take it you either did this before or are a true hardware guru. Is that first on the sort of thing I can buy off the shelf , what sort of supply sells those? Or is it a mail order specialty thing?

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        #4
        Where are you located? I'll look thru my Weatherhead brass fittings a see what I've got. That one looks real familiar. Jim
        Jim
        1975 2865 Carver Santa Cruz
        Twin 215hp 302 Ford Waukesha
        Twin Straight Shaft Drive
        Tow Vehicle 2002 Ford F250 Superduty
        7.3L Powerstroke
        Boise, Id

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          #5
          I checked my fittings and no joy. Is the oil tank hole accessible? Like if you could remove tank and tape out the hole to a pipe thread? 3/8 X 16 is a standard (course bolt) thread and the fitting you're looking at is Straight pipe to tapered pipe. Jim
          Jim
          1975 2865 Carver Santa Cruz
          Twin 215hp 302 Ford Waukesha
          Twin Straight Shaft Drive
          Tow Vehicle 2002 Ford F250 Superduty
          7.3L Powerstroke
          Boise, Id

          Comment


            #6
            "Calvincat" post=809862 wrote:
            I checked my fittings and no joy. Is the oil tank hole accessible? Like if you could remove tank and tape out the hole to a pipe thread? 3/8 X 16 is a standard (course bolt) thread and the fitting you're looking at is Straight pipe to tapered pipe. Jim
            Thanks for looking but it's the other end I'm needing. It's the end that goes into the alphas upper (vent) plug. From looking up and around the net it seems to be a hydraulic hose adapter. I'll swing by the local John Deere dealer and see if they have any kicking around..

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              #7
              Is this by chance the part you're looking for? MerCruiser Outdrive Part#22-98278? It's down the page a little way. Jim

              http://www.mercstuff.com/reservoir.htm
              Jim
              1975 2865 Carver Santa Cruz
              Twin 215hp 302 Ford Waukesha
              Twin Straight Shaft Drive
              Tow Vehicle 2002 Ford F250 Superduty
              7.3L Powerstroke
              Boise, Id

              Comment


                #8
                Would you believe that I managed to make it by modifing a Barb I found in my fittings box. Totally wrong thread being straight fine. I wondered if I clamped a 3/8 coarse die in the vise and got it into the die straight. Maybe just maybe. Well it didn't want to start at all so I rolled it around the grinder to taper the end some. Then I. It goes an do at the end it's got decent. Not perfect threads. I put a tight O Ring over the original gasket and put a dab of silicone for insurance. I'll definitely keep an eye on it for a while but consideringÔÇï it gets no torque pressure and is way opt of the water, good nu
                ff.


                Attached files

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                  #9
                  Look what I made. That's a fine threaded Barb I forced through a die. No it's not perfect but threads in well with an o ring over the gasket. I used a tad of silicone to be sure. It doesn't leak and since it's up high away from water pressure it will be good enough. Of course I will be keeping an eye on it for a while

                  This began as a 3/8 fine thread barb I found in my junk box. I wondered if I could rethread it. It turns out I could by just rolling it on the grinder on the end enough to get the threads to enter the die. Then it threaded as normal. It's not perfect but for this application it should work fine.

                  an



                  Attached files

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                    #10
                    You know what they say "That necessity is the mother of invention". Glad you was able to get it taken care of and with just a little sweat equity. Jim
                    Jim
                    1975 2865 Carver Santa Cruz
                    Twin 215hp 302 Ford Waukesha
                    Twin Straight Shaft Drive
                    Tow Vehicle 2002 Ford F250 Superduty
                    7.3L Powerstroke
                    Boise, Id

                    Comment

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