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gs1000g starter motor, which is best Mitsuba or Nippon Denso?

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    gs1000g starter motor, which is best Mitsuba or Nippon Denso?

    I just took my Mitsuba starter apart and it looks to me like junk. Totally dirty and rusty. There is continuity between the housing and the positive bolt. So I thinking of replacing it with a Nippon Denso starter which is maybe easier getting spares for.

    DSC_0470.jpg

    #2
    Not sure what is available in your neck of the woods, but over here, we get kits from Stocker's Starters.

    Kits for both starters are available.

    .
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      #3
      SM-8, $19.95, Brush Holder - Mitsuba - Stockers Starters is the place to shop for small-engine starters and repair parts!



      Brush Holder - Mitsuba
      Stockers #: SM-8
      Type: New
      Replaces: Mitsuba
      Retail Price: $37.45
      Your Price: $24.95
      You Save: $12.50

      Had 850G for 14 years. Now have GK since 2005.
      GK at IndyMotoGP Suzuki Display... ... GK on GSResources Page ... ... Euro Trash Ego Machine .. ..3 mo'cykls.... update 2 mocykl


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        #4
        The rebuild kit includes the insulator for the electrical connection thru the case.

        Mitsubas are the 4 brush motors, that I prefere to the Denso (that are 2 brush), but that is just my opinion based only on my general therory.


        I would say to rebuild what you have, well, unless the commutator is worn way down and/or if bearings bad. (but are rebuild kits for bearing too).
        Or maybe you want another motor if commutator is worn some (uneven, scored) and you dont want to have to dress it up.


        My cheap self says to try the $25 option before the $150 option.
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        Or maybe the $150 option will be more productive.

        .
        Last edited by Redman; 04-09-2018, 05:33 PM.

        Had 850G for 14 years. Now have GK since 2005.
        GK at IndyMotoGP Suzuki Display... ... GK on GSResources Page ... ... Euro Trash Ego Machine .. ..3 mo'cykls.... update 2 mocykl


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          #5
          Originally posted by Redman View Post
          The rebuild kit includes the insulator for the electrical connection thru the case.

          Mitsubas are the 4 brush motors, that I prefere to the Denso (that are 2 brush), but that is just my opinion based only on my general therory.

          .
          Not mine, it looks like this, its a SM-229. The 4 brush one looks easier to service, I couldn't find a service kit for the 2 brush type although the one for a Goldwing 1000 looks similar. The Nippon Denso has magnets, which is good in that they are one less thing to go wrong (so long as they stay glued), but are bad in terms of power. Anyway I have got another used SM-229 on the way.

          DSC_0473.jpg

          Comment


            #6
            Commutator looks like this, dirty but not so worn.

            DSC_0469.jpg

            Comment


              #7
              Are you sure your starter is a Mitsuba? I just rebuilt a four brush Mitsuba and it didn't look like your starter.
              Ed

              To measure is to know.

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                #8
                the one you say you are getting:
                Starter - Suzuki Motorcycle
                Stockers #: SS-21
                Type: New
                Replaces: Mitsuba
                Retail Price: $224.95
                Your Price: $149.95
                You Save: $75.00
                Warranty: 1 year

                Orders placed today will ship:
                Thursday, April 12, 2018
                Select Country to view shipping cost:
                Starter
                Fits: Suzuki Motorcycle
                1977-1979 GS400/550/750


                12 Volt, CCW, 9 Teeth
                Replaces: SM-229

                Had 850G for 14 years. Now have GK since 2005.
                GK at IndyMotoGP Suzuki Display... ... GK on GSResources Page ... ... Euro Trash Ego Machine .. ..3 mo'cykls.... update 2 mocykl


                Comment


                  #9
                  The one listed for 80 GS1000 ..... hum, the same CCW, 9 teeth... maybe some clock difference (not apparent in photos), dont know.

                  Starter - Suzuki Motorcycle
                  Type: Remanufactured
                  Replaces: Mitsuba
                  Stockers #: SS-5
                  Retail Price: $209.95
                  Your Price: $139.95
                  Core Deposit: $50.00
                  Starter
                  Fits: Suzuki Motorcycle
                  1980-1982 GS550
                  1981-1982 GS650E
                  1980-1983 GS750E
                  1980-1983 GS850G
                  1980-1982 GS1000
                  1980-1984 GS1100


                  12 Volt, CCW, 9 Teeth

                  Had 850G for 14 years. Now have GK since 2005.
                  GK at IndyMotoGP Suzuki Display... ... GK on GSResources Page ... ... Euro Trash Ego Machine .. ..3 mo'cykls.... update 2 mocykl


                  Comment


                    #10
                    Cross-reffing the part number on Partzilla, the same starter fits all of those, but curiously there are gaps that I know it fits. 31100-49050 is the part number of the unit that Zuk used for just about everything for a decade and more.
                    ---- Dave
                    79 GS850N - Might be a trike soon.
                    80 GS850T Single HIF38 S.U. SH775, Tow bar, Pantera II. Gnarly workhorse & daily driver.
                    79 XS650SE - Pragmatic Ratter - goes better than a manky old twin should.
                    92 XJ900F - Fairly Stock, for now.

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                    Comment


                      #11
                      Just got a 2nd hand 2 brush Mitsuba starter of ebay. it was advertised as having come off a Suzuki GSX750. It is identical to my old one (I had a look at the brushes, state of the commutator etc.) and is in very good condition. I'm now waiting for a dry day in which to fit it, damn Hamburg weather!

                      Comment


                        #12
                        Originally posted by Grimly View Post
                        Cross-reffing the part number on Partzilla, the same starter fits all of those, but curiously there are gaps that I know it fits. 31100-49050 is the part number of the unit that Zuk used for just about everything for a decade and more.
                        Yep, I went down the same rabbit hole of chasing part numbers and cross-referencing once, and there are a huge number of Suzuki models with compatible starters. Basically, if it looks the same, it will almost certainly fit -- look for the two offset mounting holes at the rear.

                        I've never noticed much difference in reliability between the Mitsuba or ND starters. Maybe someone has some stats.

                        What kills GS starters is mostly corrosion, neglected valve clearances, and badly tuned carbs. If the Mystery Hole (drain hole under the starter) gets plugged with debris, the starter cavity can fill up with water. And if your valve clearances or carbs are neglected, then the engine is hard to start and the starter spends way more time than it should grinding away. A properly tuned GS should spring to life in a fraction of a second when cold; just the slightest whiff of the starter button is all that's needed.
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                        Comment


                          #13
                          Originally posted by bwringer View Post
                          (...) A properly tuned GS should spring to life in a fraction of a second when cold; just the slightest whiff of the starter button is all that's needed.
                          This is what both of mine do, most of the time. Also why I quite like to kick-start them.

                          They do want a bit of choke though, duration depends on environmental conditions.
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