A GPZ550 but what HP can a 10.25 comp ration 615 overbore give

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  • Cipher
    Forum Sage
    • Mar 2016
    • 3129
    • Toronto Ontario

    #1

    A GPZ550 but what HP can a 10.25 comp ration 615 overbore give

    what with pods and flatslides and a four into one and cams and magic things?

    Visit Kijiji Classifieds to buy, sell, or trade almost anything! New and used items, cars, real estate, jobs, services, vacation rentals and more virtually anywhere in Canada.
    1983 GS 550 LD
    2009 BMW K1300s
  • GS1150Pilot
    Forum LongTimer
    Past Site Supporter
    • Nov 2013
    • 18917
    • MoN, AZ

    #2
    My '82 GPz 550 made 75 rwhp on a dyno after about the same set of mods. That one looks to need a lot of tidying up, though.
    "Thought he, it is a wicked world in all meridians; I'll die a pagan."
    ~Herman Melville

    2016 1200 Superlow
    1982 CB900f

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    • Cipher
      Forum Sage
      • Mar 2016
      • 3129
      • Toronto Ontario

      #3
      yes but its cheap at 1100 I think. The wiseco kit costs 500 plus on ebay.
      1983 GS 550 LD
      2009 BMW K1300s

      Comment

      • GS1150Pilot
        Forum LongTimer
        Past Site Supporter
        • Nov 2013
        • 18917
        • MoN, AZ

        #4
        Assuming the motor work was done right, they are truly great bikes. I spent too much doing mine, but it was fun to keep up with the first generation of Hurricane 600's when they came out.
        "Thought he, it is a wicked world in all meridians; I'll die a pagan."
        ~Herman Melville

        2016 1200 Superlow
        1982 CB900f

        Comment

        • Nessism
          Forum LongTimer
          GSResource Superstar
          Past Site Supporter
          Super Site Supporter
          • Mar 2006
          • 35790
          • Torrance, CA

          #5
          I wouldn't buy a bike like that based on HP. It's a classic.
          Ed

          To measure is to know.

          Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

          Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

          Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

          KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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          • GS1150Pilot
            Forum LongTimer
            Past Site Supporter
            • Nov 2013
            • 18917
            • MoN, AZ

            #6
            I think he likes it outright, but the mods, if done well, definitely add to the fun factor.
            "Thought he, it is a wicked world in all meridians; I'll die a pagan."
            ~Herman Melville

            2016 1200 Superlow
            1982 CB900f

            Comment

            • Fjbj40
              Forum Sage
              • Oct 2012
              • 1221
              • Dartmouth Nova Scotia

              #7
              That would be a fun resto-mod!

              I bet it can be had for less than a thousand!
              1978 Gs1085 compliments of Popy Yosh, Bandit 1200 wheels and front end, VM33 Smoothbores, Yosh exhaust, braced frame, ported polished head :cool:
              1983 Gs1100ESD, rebuild finished! Body paintwork happening winter 2017:D

              I would rather trust my bike to a technician that reads the service manual than some backyardigan that THINKS HE KNOWS how to fix things.

              Comment

              • Cipher
                Forum Sage
                • Mar 2016
                • 3129
                • Toronto Ontario

                #8
                its so far away...........
                1983 GS 550 LD
                2009 BMW K1300s

                Comment

                • srsupertrap
                  Forum Sage
                  Past Site Supporter
                  • Oct 2007
                  • 2208
                  • Erie, CO.

                  #9
                  Its worth buying but based on the pictures but I bet its no turn key example. There are other options than Wiseco BB but I have never tried em

                  Steve

                  1979 GS1000E (45 Yrs), 1981 GPz550 (11 Yrs)

                  Comment

                  • rustybronco
                    Forum LongTimer
                    Bard Award Winner
                    GSResource Superstar
                    Past Site Supporter
                    • Jul 2005
                    • 14961
                    • Marysville, Michigan

                    #10
                    $1,100 CAD = $770 USD. Cheap enough at that price.
                    De-stinking Penelope http://thegsresources.com/_forum/sho...d.php?t=179245

                    http://www.thegsresources.com/_forum...35#post1625535

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