CV Carb sync

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  • Alan Schlosser
    Forum Mentor
    Charter Member
    Past Site Supporter
    • May 2002
    • 875
    • Ontario, New York

    #1

    CV Carb sync

    Just curious. My brother is getting himself a set of Morgan gauges and I was thinking about adjusting my CV's on the 1100 8 valve. The manual shows that the two inner carbs are set at a lower vacuum. Can anyone tell me the reason for this?
    1982 GS1100GLZ Sold but still loved
    2008 Bandit 1250 Crashed (cager on a cell phone)
    2008 Bandit 1250 #2
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    #2

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    • Alan Schlosser
      Forum Mentor
      Charter Member
      Past Site Supporter
      • May 2002
      • 875
      • Ontario, New York

      #3
      Thank you, thank you. That's the answer. The crossover.
      1982 GS1100GLZ Sold but still loved
      2008 Bandit 1250 Crashed (cager on a cell phone)
      2008 Bandit 1250 #2

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      • duaneage
        Forum Guru
        GSResource Superstar
        • Apr 2004
        • 6149
        • Wilmington Delaware

        #4
        Unless you have a 4-1 then they are all equal.
        1981 GS650G , all the bike you need
        1980 GS1000G Power corrupts, and absolute power corrupts absolutely

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        • Steve
          GS Whisperer
          • Jun 2005
          • 35924
          • southwest oHIo

          #5
          Originally posted by Alan Schlosser
          The manual shows that the two inner carbs are set at a lower vacuum. Can anyone tell me the reason for this?
          Originally posted by Alan Schlosser
          Thank you, thank you. That's the answer. The crossover.
          I have gone along with this theory blindly, like most others. I have asked the same question you did and got pretty much the same answer.

          However, I would still like to know, what is it about the crossover that requires the different settings?

          .
          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
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          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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          • duaneage
            Forum Guru
            GSResource Superstar
            • Apr 2004
            • 6149
            • Wilmington Delaware

            #6
            Air flow through the entire system is different for the two inboard carbs. The difference is really minute but since we strive for perfection there is no other choice
            1981 GS650G , all the bike you need
            1980 GS1000G Power corrupts, and absolute power corrupts absolutely

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