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302 V-8 running improvements

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  • 302 V-8 running improvements

    Gentlemen, I finally have most of the bugs sorted out of my 302 Ford V-8 engine. It's been a long trip playing with carbs and ignitions to finally get it to this point. As most of you know, sometimes the building part of the job is the easiest. The fine tuning part takes almost forever. Anyway I wanted to share the latest video of it running. I will have it and 3 of my other IC engines at NAMES.
    gbritnell
    http://www.youtube.com/watch?v=O_vQp0gevh0

  • #2
    Wow

    That sounds great. Truly a fantastic piece of work. Thanks for sharing, that is inspiring.


    ME

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    • #3
      Wow!
      A beauty, lots of detail, right down to the Motorcraft oil filter. My BIL is a dyed in the wool Ford nut, wait till he sees this one. Lots of hours I'm sure but well worth it. I'd love to see some pictures of the build in progress if you have any.
      Here's a pat on the back and a couple of "atta boys", well done, I just wish I had the patience to see a job like that through.
      Home, down in the valley behind the Red Angus
      Bad Decisions Make Good Stories​

      Location: British Columbia

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      • #4
        Very nice looking engine! Wish I had the motivation to start and finish such grand projects. Im amazed at people who can do such long projects to the very end.
        Play Brutal Nature, Black Moons free to play highly realistic voxel sandbox game.

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        • #5
          Most wonderful work.

          I was thinking it could be a great idea to have such an engine mounted in the lawnmover, sure would make the neigthbors look - "maybe my grass is not more green, but my mover sure sounds better"
          Mogens Kilde
          http://m_kilde.skysite.dk/

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          • #6
            Stunning! We're not worthy

            Even more impressive that you've got 2500 hours invested in it (!). That's focus.
            "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

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            • #7
              Originally posted by m_kilde
              Most wonderful work.

              I was thinking it could be a great idea to have such an engine mounted in the lawnmover, sure would make the neigthbors look - "maybe my grass is not more green, but my mover sure sounds better"
              Good idea! Could almost make a person enjoy mowing the lawn.
              Weston Bye - Author, The Mechatronist column, Digital Machinist magazine
              ~Practitioner of the Electromechanical Arts~

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              • #8
                Incredible, thanks for sharing.

                -SD:

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                • #9
                  Wow, its starting to sound nice too. Gonna add a little muffler?
                  Play Brutal Nature, Black Moons free to play highly realistic voxel sandbox game.

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                  • #10
                    Nice job, did you cast some of the parts or machine everything from solid?
                    It's only ink and paper

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                    • #11
                      WOW! I was expecting an actual 302 in a car. That thing is amazing!


                      Not sure if these are like the big ones that need to warm up before running perfect. I have tuned many of cars both carbed and EFI. To me this engine sounds 1. cold, and if not cold 2. sounds like to much fuel or not enough air or both.
                      Andy

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                      • #12
                        Hi vpt,
                        I have tried every conceivable carb on this thing, some quite complex and the one in use today, very simple. I have built them similar to full sized carbs with floats and booster venturis with no better performance. There are several problems involved when carbureting these little engines. First is the small amounts of fuel they use and how best to meter it and second is there's no accurate way to 'read' the richness or leanness except by the old 'seat of the pants' method.
                        Another thing that would help the performance would be to have some kind of advance for the ignition. On this engine I have a Hall effect trigger with fixed timing. The engine will spin an honest 7200 rpm so to go from idle, 750 rpm, to top rpm with fixed time is quite a feat.
                        The carb I ended up with is one used on a model airplane engine. I got it dialed in quite close. I have to adjust the mixture screw minutely when revving it up, more fuel. After I got everything close I replicated the venturi, jet size, and airbleed orifice into what looks like a factory type carb. It runs about the same as the model airplane carb. As you can see from the bottom of the carb the bore size is very tiny.



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                        • #13
                          Here's a couple of pics of the engine. The first was a complete tear down because of leaking head gaskets. The second is with the intake manifold off to fool with the rocker oiling system. The last is just a front view of the block when I machined it. The quality of the pictures isn't good because they were scanned from old 35's that I had taken when I built it.
                          gbritnell



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                          • #14
                            gbritnell, forget about making a real carb. Just use the the carb in the photo's and put the simple carb inside. Forget about making the real thing, just hide what works inside the authentic looking carb.
                            It's only ink and paper

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                            • #15
                              That is amazing! Don't you hands cramp up from working with such small parts all the time?
                              Andy

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