Charging system hasn't failed, should I mess with it?

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  • fbody_mike
    Forum Mentor
    • Oct 2017
    • 360
    • San Gabriel Valley CA

    #31
    My bit of advice is to get sh775 regulator, I've had a few oem Suzuki regulators fail where they started over charging. One just recently even. Taking out the ignitor can be a big hassle and expensive.
    1981 Suzuki GS250T
    1982 Yamaha Seca Turbo
    1985 Suzuki GS550E
    2004 Suzuki GSF1200S

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    • 93Bandit
      Forum Mentor
      • Nov 2018
      • 839
      • Mundy Twp, Michigan

      #32
      I ordered a used SH775 for the 850L, and it should arrive tomorrow or Tuesday.

      My road trip has been canceled, but I've had the opportunity to do a lot of the work I've been putting off on the bike so I've slowly been checking things off the list. I'm to the electrical now, and today I decided to see what charging voltage is. At idle, its 16.5V and at 3k its 17.5V. Last time I checked charging voltage, it was around 14.5V if I remember correctly. So now that it's at 17.5V, that means my R/R is not working correctly, right? Glad I went ahead and ordered an R/R.
      - 1983 GS850L ~ 30,000 miles and going up - Finally ready for a proper road trip!
      - 1977 GS750B - Sold but not forgotten

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      • 93Bandit
        Forum Mentor
        • Nov 2018
        • 839
        • Mundy Twp, Michigan

        #33
        I installed the SH775 today on my 850L and it's now charging at 14.46V. Glad that's working as it should!

        For future reference if anyone needs an answer, the SH775 will bolt directly in the same place as the original R/R with the original fasteners, on the bottom of the battery box, on an 83 850L.
        Last edited by 93Bandit; 05-07-2020, 08:10 PM.
        - 1983 GS850L ~ 30,000 miles and going up - Finally ready for a proper road trip!
        - 1977 GS750B - Sold but not forgotten

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        • Burque73
          Forum Sage
          Past Site Supporter
          • Mar 2016
          • 4711
          • Albuquerque, NM

          #34
          Originally posted by 93Bandit
          I installed the SH775 today on my 850L and it's now charging at 14.46V. Glad that's working as it should!

          For future reference if anyone needs an answer, the SH775 will bolt directly in the same place as the original R/R with the original fasteners, on the bottom of the battery box, on an 83 850L.
          That same spot works for the G model as well. Curiously enough, my stock reg/rec unit was next to the fuse panel, but there was no way the larger SH775 would fit there.
          Roger

          '83 GS850G Daily rider
          '82 GS1100GK Work in (slow) progress

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          • 93Bandit
            Forum Mentor
            • Nov 2018
            • 839
            • Mundy Twp, Michigan

            #35
            Originally posted by Burque73
            That same spot works for the G model as well. Curiously enough, my stock reg/rec unit was next to the fuse panel, but there was no way the larger SH775 would fit there.
            Where there already threaded holes on the bottom of the battery box for yours?
            - 1983 GS850L ~ 30,000 miles and going up - Finally ready for a proper road trip!
            - 1977 GS750B - Sold but not forgotten

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            • Rob S.
              Forum Guru
              Past Site Supporter
              • Dec 2013
              • 9389
              • New York City

              #36
              Originally posted by Burque73
              That same spot works for the G model as well.
              Ah, so that's what the G spot is!
              1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

              2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

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              • Burque73
                Forum Sage
                Past Site Supporter
                • Mar 2016
                • 4711
                • Albuquerque, NM

                #37
                Originally posted by 93Bandit
                Where there already threaded holes on the bottom of the battery box for yours?
                Yes. I regret not pulling the battery box and turning it over to mount it though. It was a real bear to fasten in place.
                Roger

                '83 GS850G Daily rider
                '82 GS1100GK Work in (slow) progress

                Comment

                • 93Bandit
                  Forum Mentor
                  • Nov 2018
                  • 839
                  • Mundy Twp, Michigan

                  #38
                  Originally posted by Burque73
                  Yes. I regret not pulling the battery box and turning it over to mount it though. It was a real bear to fasten in place.
                  Cool, good to know for my 850G.

                  Funny you mention removing the battery box. Before I started working on it, I wondered if I would be able to fasten the new module in place with the battery box in the bike. After evaluating the situation, I decided it would just be easier to pull the box out. I'm glad I did because it was super easy to do, and I had to use an impact screwdriver to get the fasteners broke loose. I would have never gotten them out had I left the box in place, and i likely would have stripped the heads. Also, since the batt box was out I was able to clean off some surface rust and repaint it to help prevent it from rusting out.
                  - 1983 GS850L ~ 30,000 miles and going up - Finally ready for a proper road trip!
                  - 1977 GS750B - Sold but not forgotten

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                  • Guest

                    #39
                    I love my Compu Fire, 12 years now and going strong.

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                    • Guest

                      #40
                      Originally posted by mrbill5491
                      I love my Compu Fire, 12 years now and going strong.
                      I have had my Compu-fire for close to that long with no problems. I was worried about it recently because my battery has gone dead on me a few times. Then I realized that my MotoBatt battery is almost 9 years old when a friend told me they don't last more than two or three years on average. I guess I have gotten a lot of service out of that battery.

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                      • Rob S.
                        Forum Guru
                        Past Site Supporter
                        • Dec 2013
                        • 9389
                        • New York City

                        #41
                        Originally posted by OldVet66
                        ...my MotoBatt battery is almost 9 years old when a friend told me they don't last more than two or three years on average. I guess I have gotten a lot of service out of that battery.
                        I may have owned only 6 or 7 batteries, but each has lasted more than 5 years. Considerably more.
                        1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

                        2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

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