1948 3hp Sea King timing

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  • September 12, 2023 at 9:27 pm #280547
    John Gragg
    Participant

      US Member

      Yes, my bad. Of course the points (and where they lie in relation to the piston positions) play an integral part in the ‘timing’. I guess I was over simplifying it. But yes, I do get it. The key for me was the cam on the crankshaft.

      For me, once I figured that out it all made complete sense.

      Like the pre-war cars with the advance on the steering wheel.

      Best Regards,

       

      John Gragg
      RIverside, CA

      Just starting in the hobby, please be patient.

      48 Sea King 5hp GG9014A
      49 Sea King 5hp GG9014A
      48 Johnson TD20
      49 Johnson TD20
      54 Johnson QD15
      55 Johnson CD12
      57 Johnson RJE-19M
      57 Johnson RDE-19

      September 12, 2023 at 10:09 pm #280551
      frankr
      Participant

        US MEMBER PAY BY CHECK

        I remember when those cars with the spark and throttle on the steering wheel were in daily use.  Are we getting too old, or what?

        September 12, 2023 at 10:26 pm #280552
        John Gragg
        Participant

          US Member

          I know I am. I don’t remember those cars in daily use, but I had a couple of friends with grandparents that drove them.

          I also date myself with visiting automats for lunch (as a kid), trolleys in Los Angeles, and .05 cent pay phone calls.

           

          John Gragg
          RIverside, CA

          Just starting in the hobby, please be patient.

          48 Sea King 5hp GG9014A
          49 Sea King 5hp GG9014A
          48 Johnson TD20
          49 Johnson TD20
          54 Johnson QD15
          55 Johnson CD12
          57 Johnson RJE-19M
          57 Johnson RDE-19

          September 12, 2023 at 11:55 pm #280557
          joecb
          Participant

            US MEMBER PAY BY CHECK

            Darn it guys, now you got me thinking about this …I always knew that the point gap had an affect on spark timing, hence always careful to accurately set to the factory spec, normally .020. But thinking about in now, seems that within reasonable limits of variation, the only affect will be the range of travel of the magneto lever, either to the left or right. Don’t want to think this too hard, head may hurt.

            Wow! my head is hurting… what I said above would apply to a single cylinder motor, but with a twin/ two sets of points, any variation in gap between the two sets of points will have a negative affect on timing of one cylinder relative to the other. Twin point set-up must have both sets of points set at exactly the same gap for optimum operation. The best way to achieve this is by using one of the timing tools at allow for actually showing the instance of point opening/closing using a timing light.

            Yes ? No? … your thoughts

            Joe B

            September 13, 2023 at 12:00 am #280558
            dave-bernard
            Participant

              US Member

              Yes !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

              September 13, 2023 at 11:43 am #280569
              Tubs
              Participant
                frankr wrote:

                I remember when those cars with the spark and throttle on the steering wheel were in daily use.  Are we getting too old, or what?


                I was born just after the war so I don’t remember them being daily
                transportation. However when I became a teenager we could buy
                them for $15.00 to $50.00. Coupes were more. Bodies were
                modified. 4 cylinder motors got replaces with Olds and Caddy V8’s.
                Those early car we built were scary crude. Did that on and off
                for 50 some years.
                Tubs                .

                A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

                September 13, 2023 at 1:02 pm #280570
                joecb
                Participant

                  US MEMBER PAY BY CHECK

                  I still have mine, throttle and timing on the steering column. Dad bought it for me in 1963 for  $150 … “high school – keep me out of trouble project” he said… mostly it worked!

                  Joe B

                  September 13, 2023 at 1:11 pm #280572
                  Tubs
                  Participant


                    Didn’t keep any very long. Wish I had taken more pictures.
                    Tubs                    .

                    A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

                    September 13, 2023 at 1:31 pm #280573
                    Bob Wight
                    Participant

                      US Member

                      Tubs – great looking cars.   Maybe scary crude but I’ll bet scary fast too.

                      Bob

                      1937 Champion D2C Deluxe Lite Twin
                      1954 Johnson CD-11
                      1955 Johnson QD-16
                      1957 Evinrude Fastwin 18
                      1957 Evinrude 3022
                      1958 Johnson QD-19
                      1958 Johnson FD-12
                      1959 Johnson QD-20

                      “Every 20 minute job is only a broken bolt away from a 3-day project.”
                      "Every time you remove a broken or seized bolt an angel gets his wings."

                      September 13, 2023 at 4:31 pm #280578
                      joecb
                      Participant

                        US MEMBER PAY BY CHECK

                        Tubs, those are amazing and beautiful. Kinda’ at the opposite end of the HP spectrum from our old outboards, don’t ya’ think !

                        Joe B

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