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1958 Evinrude Sportwin Driveshaft Bushing Wear

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  • 1958 Evinrude Sportwin Driveshaft Bushing Wear

    Hello,

    I recently bought an Evinrude Sportwin 10. I only gave 25 for it and figured maybe it could be fixed for less than a used outboard in my area. I read on this forum about the driveshaft and bushing wear on these engines and when I took my lower unit apart mine is worn along with a worn pinion gear and chipped forward and reverse gear. I have been a professional mechanic for 17 years. I was previously a Chevy mechanic and now work on natural gas engines so wrenching isn't new but outboards are for me, which leads me to this question.....what happens if you run this lower unit with a worn bushing and driveshaft? Does it vibrate or overheat or lockup or what? I was really wanting to get this old thing purring but if I have to replace the exhaust housing and driveshaft I believe it doesn't make sense, knowing that it needs a water pump, carb rebuild, ignition rebuild and gears.
    Last edited by Mruiloba; June 14th, 2019, 04:43 PM.

  • #2
    It will break the gear teeth again.

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    • #3
      I gotcha. I guess the shaft wiggling around in there will put the gears in a bind. Sounds like this one will be sold for parts. Thanks for the reply.

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      • #4
        Is there no way to replace that bushing? I couldn't find it in a parts diagram so I assume it isn't serviceable.

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        • #5
          It should be possible for a skilled machinist to bore it out and fit a new one. You would still have to replace all the gears and drive shaft. It's been discussed before, but I haven't heard of anybody actually doing it.

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          • #6
            Thanks. I guess I have a decision to make. I appreciate the help.

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            • #7
              here ya go
              https://www.ebay.com/itm/B-Vintage-E...gAAOSwrORbmshd

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              • #8
                here's the bushing
                https://www.ebay.com/itm/Johnson-Evi...oAAOSw1KxXMeVQ

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                • #9
                  What-------That is the bushing to hold the o-ring in place for the shift rod.-----That has nothing to do with the bushing above the pinion gear !!-------That gearcase certainly is not for a 10 HP or 9.9 / 15 HP .------Proof once again that some E-Bay sellers have no idea about their listings.

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                  • #10
                    Originally posted by racerone View Post
                    What-------That is the bushing to hold the o-ring in place for the shift rod.-----That has nothing to do with the bushing above the pinion gear !!-------That gearcase certainly is not for a 10 HP or 9.9 / 15 HP .------Proof once again that some E-Bay sellers have no idea about their listings.
                    you are right, my mistake, thought we were talking shift rod.

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                    • #11
                      Originally posted by 54bobby View Post
                      That 5-bolt gearcase will NOT fit.

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                      • #12
                        Looks like a gearcase for a 28 / 33 HP model to me.

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                        • #13
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                          Originally posted by racerone View Post
                          Looks like a gearcase for a 28 / 33 HP model to me.
                          Yep, upon taking a better look, it is a seven-bolt gearcase. That's even worse than a five-bolt one. Way, way off from a '58 10hp.

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