wooshing sound 81 gs750

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  • Larry D
    Forum Sage
    Past Site Supporter
    • Jul 2008
    • 4926
    • Indianapolis,IN

    #16
    Originally posted by tkent02
    Are you sure?
    I thought it was the 8V 750 that were sold as shafties in Japan.
    UHhmmm......you could be right about that. I know there were 750's sold with a shaft, but, I can't recall if they were 8V or 16V or both......in any event, I doubt the OP has one......unless he brought it from Japan.
    Larry D
    1980 GS450S
    1981 GS450S
    2003 Heritage Softtail

    Comment

    • Steve
      GS Whisperer
      • Jun 2005
      • 35925
      • southwest oHIo

      #17
      Originally posted by Larry D
      UHhmmm......you could be right about that. I know there were 750's sold with a shaft, but, I can't recall if they were 8V or 16V or both......in any event, I doubt the OP has one......unless he brought it from Japan.
      I believe it was only the 8-valve 750s that got the shaft, and they did not make it to '81, so it's rather safe to assume that he has a chain-driven 750.

      The question remains as to whether it's an E or an L, but for engine work, it does not matter.

      .
      sigpic
      mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
      hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
      #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
      #2 son: 1980 GS1000G
      Family Portrait
      Siblings and Spouses
      Mom's first ride
      Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
      (Click on my username in the upper-left corner for e-mail info.)

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      • bartmancometh

        #18
        The carbs have been completely torn down and dipped overnight in a can of berrymans and have had the new o. Rings from cycle orings installed. As per the pdf of how to clean and adjust the carbs. And ill try to get a picture up as soon as I can

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        • Pendulum

          #19
          Cool, I'm betting it's either valves or air leaks.

          We get a LOT of folks on here that do a half ass job with the carbs and claim that they're cleaned "real good" which is why we ask. Thanks for clarifying.

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          • Larry D
            Forum Sage
            Past Site Supporter
            • Jul 2008
            • 4926
            • Indianapolis,IN

            #20
            ....and to be clear.....I hear "whooshing" sounds on my 750 too.

            ........usually between about 85 and 100 mph.......


            Good luck with your 16V 750, they are a blast to ride !!!!
            Larry D
            1980 GS450S
            1981 GS450S
            2003 Heritage Softtail

            Comment

            • koolaid_kid

              #21
              Oh c'mon, Larry, that is just the sound of your head expanding.

              Comment

              • bartmancometh

                #22
                this is what it looked like when i got it




                and this is what it looks like currently turning it into a cafe

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                • Guest

                  #23
                  Did you install a jet kit when you switched over to the pod filters? also the air wooshing sound you are talking about may be the sound of air being sucked in through the pod filters. You WILL need a jet kit with those filters. Oh and your bike is an E model

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                  • bartmancometh

                    #24
                    i did not put the jet kit in. what kind should i go with? and thanks for the id

                    Comment

                    • Larry D
                      Forum Sage
                      Past Site Supporter
                      • Jul 2008
                      • 4926
                      • Indianapolis,IN

                      #25
                      No idea on what jets you'll need, but you're using much, much more air than if you had the stock setup. These bikes are very particular on the air/fuel mixture.

                      You're bike looks like a mix to me because of the leading front forks. Perhaps it had a front end accident at some point...

                      Do you still have that air filter box that's laying on the floor in those pics ?? If so, I'd be interested in purchasing it from you.
                      Larry D
                      1980 GS450S
                      1981 GS450S
                      2003 Heritage Softtail

                      Comment

                      • bartmancometh

                        #26
                        no i sold all the extras already.

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                        • tkent02
                          Forum LongTimer
                          Past Site Supporter
                          • Jan 2006
                          • 35571
                          • Near South Park

                          #27
                          Originally posted by Larry D

                          You're bike looks like a mix to me because of the leading front forks. Perhaps it had a front end accident at some point...
                          The 80 and 81 750Es had leading axle forks.
                          http://img.photobucket.com/albums/v5...tatesMap-1.jpg

                          Life is too short to ride an L.

                          Comment

                          • Steve
                            GS Whisperer
                            • Jun 2005
                            • 35925
                            • southwest oHIo

                            #28
                            Originally posted by Larry D
                            You're bike looks like a mix to me because of the leading front forks. Perhaps it had a front end accident at some point...
                            Originally posted by tkent02
                            The 80 and 81 750Es had leading axle forks.
                            The 1100Es also had a leading axle for those years.

                            .
                            sigpic
                            mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
                            hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
                            #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
                            #2 son: 1980 GS1000G
                            Family Portrait
                            Siblings and Spouses
                            Mom's first ride
                            Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
                            (Click on my username in the upper-left corner for e-mail info.)

                            Comment

                            • Big T
                              Forum LongTimer
                              Past Site Supporter
                              Super Site Supporter
                              • Mar 2005
                              • 12392
                              • West Slope, OR

                              #29
                              Originally posted by bartmancometh
                              i did not put the jet kit in. what kind should i go with? and thanks for the id
                              Dynojet is the most common, followed by Factory
                              1978 GS 1000 (since new)
                              1979 GS 1000 (The Fridge, superbike replica project)
                              1978 GS 1000 (parts)
                              1981 GS 850 (anyone want a project?)
                              1981 GPZ 550 (backroad screamer)
                              1970 450 Mk IIID (THUMP!)
                              2007 DRz 400S
                              1999 ATK 490ES
                              1994 DR 350SES

                              Comment

                              • koolaid_kid

                                #30
                                Get the DynoJet Stage 3 kit. It contains jets for bikes with pods and bikes with pods and pipes. The needles are also an important part of the kit, some say the most important part.

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