7.5/10 conversion

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  • Smokinapankake
    • Jan 2026

    #1

    7.5/10 conversion

    So I posted in the techinal section but got no responses.

    How difficult would it be to slap a 1982, 16v 1000cc motor out of an 82 Katana into an 83-85 GS 750E/700E frame?
  • hillsy
    Forum Sage
    • May 2008
    • 1469
    • Brisbane, Queensland, Australia

    #2
    If the 750 frame is the round tube variety, it should only involve new engine mounts (bottom front). The rest is a bolt in fit.

    The newer square tube 750 frames (EF) had the pre GSXR motor and are too small to accept the older style engines.
    Current:
    Z1300A5 Locomotive (swapped my Intruder for it), GS450 Cafe Project (might never finish it....), XT500 Commuter (I know - it's a Yamaha :eek:)

    Past:
    VL1500 Intruder (swapped for Z1300), ZX9R Streetfighter (lets face it - too fast....), 1984 GSX750EF, 1984 GSX1100EF (AKA GS1150)
    And a bunch of other crap Yamahas....

    Comment

    • first timer
      Forum Sage
      • Aug 2002
      • 3429
      • Tucson, Arizona

      #3
      would be as hard as a doing a 1100 engine, the kat 1000 and the 1100 are the same size only differance is the piston diameter.

      sorry i can't help any more but may it will broaden your search options.
      78 GS1000 Yosh replica racer project, 82 Kat 1000, 10 990 ADV-R, Some dirt bikes

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      • oshanac

        #4
        Smokinapankake
        Senior Member


        I say it's worth a shot, do you already have the motor?

        Comment

        • Guest

          #5
          Originally posted by Smokinapankake
          So I posted in the techinal section but got no responses.

          How difficult would it be to slap a 1982, 16v 1000cc motor out of an 82 Katana into an 83-85 GS 750E/700E frame?
          Very. But a gsxr style would, a couple guys have done it already.

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