Seized 58 10hp Sportwin – bad signs

Home › Forum › Ask A Member › Seized 58 10hp Sportwin – bad signs

Viewing 10 posts - 1 through 10 (of 13 total)
1 2
  • Author
    Posts
  • April 25, 2015 at 12:49 am #1317
    shoestringmariner
    Participant

      So I did it…I dragged a locked up motor home with the hopes it was just tight from sitting.

      Soaked it with PB blaster, then took off the cyl head. A bit of rust, but nothing major. The PB ate it off, but it was still locked tight.
      So, off came the intake.
      Corrosion and some fine sand inside. BAD, I know.

      I found that all of the bearings on the crank and rod are locked. Removed the crank and now pistons travel their range, but sill cant free up the bearings.

      My thoughts WERE to see if I could dissolve and flush out the rust with PB and reassemble just for a compression test. If values were ok, then I’d consider a rebuild.

      My question is this; I assume this motor went glug, glug while running as the woodruff key is partially sheared off, which makes me think this motor stopped fast and hard. I dont know if the rods are bent, or if the pistons (or anything else) has been damaged or compromised.

      Is it worth investigating more, or is it off to the great parts yard in the sky time?

      April 25, 2015 at 1:01 am #14684
      frankr
      Participant

        US Member

        Parts motor for sure.

        April 25, 2015 at 1:29 am #14690
        Mumbles
        Participant

          Undo the rod caps and push the pistons out of their holes to see how they are. I can guarantee the rods and crank journals will be etched and unusable if they had water on them. Who knows, maybe the block has straight cylinders and will clean up with a hone job to live another day. Pistons to.

          April 25, 2015 at 1:51 am #14693
          shoestringmariner
          Participant

            Thanks guys. Pretty much assumed it was toast/parts only, but thought I’d ask. I saw the etching but thought it might clean up with some strips of scotchbrite…or not…

            April 25, 2015 at 2:16 am #14697
            chris-p
            Participant

              I dunno, there are a few members who sell NOS parts very reasonable. If you got it cheap enough, why not rebuild it and let it live another 50 years.

              Pull the crank, try some emory on the journals, If they polish out within spec, rebuild with new bearings. If they don’t place a wanted ad for a good used crank.

              I see you are not far from me at all. If you do end up needing parts, I can likely help. PM me. If you need any help with it, let me know.

              April 25, 2015 at 2:40 am #14698
              shoestringmariner
              Participant

                Thanks Chris. I think I’ll dissect further and see

                Any idea where I’d find the specs on one of these motors?

                CORRECTION, this is a Sportwin motor…not a Fastwin..I goofed

                April 25, 2015 at 4:40 am #14705
                wedgie
                Participant
                  quote ShoestringMariner:

                  Thanks Chris. I think I’ll dissect further and see

                  Any idea where I’d find the specs on one of these motors?

                  CORRECTION, this is a Sportwin motor…not a Fastwin..I goofed

                  http://www.agott.com/glassboat/manuals.html

                  April 25, 2015 at 11:39 am #14712
                  shoestringmariner
                  Participant

                    Excellent, thanks Wedgie

                    April 28, 2015 at 8:04 pm #14943
                    fleetwin
                    Participant

                      US Member - 2 Years

                      The 58 Sportwin uses the little wrist pins/rods, I surely would NOT put it back together with those parts, even if they are usable after cleaning up with emery.
                      If the rest of the engine is in nice shape (you better check the gearcase carefully!), I would look for an early 60s 10hp powerhead and transfer all the internals into your 58 block (after checking measuring your cylinders).

                      April 28, 2015 at 10:54 pm #14958
                      shoestringmariner
                      Participant

                        Thanks Fleet, I’ve chucked it all in a box for now so I can concentrate on some boat repairs. I’m going to do as you said, or locate another running motor and keep this for parts. Certainly good to know that some of the early 60’s guts are interchangable.

                      • Author
                        Posts
                      Viewing 10 posts - 1 through 10 (of 13 total)
                      1 2
                      • You must be logged in to reply to this topic.