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    550 engine

    Last night I was drinking a few beers and drunk Andy decided to pull the engine out of the bike. Dorkbox has some issues due to the previous owner being a moron. But I'm not one to back down from a fight. As I'm getting ready to spend some money on new parts I got thinking that maybe I want to just get a bigger engine. I don't want to put money into a 550 if a larger engine is a straight swap. A lot of the parts on the bike have "550\750" on them. Does that mean a 750 would bolt right in? would all the parts be usable? Or do I just stick with the 550 and use the bike as my bar hopper? This is my play bike. My other bike is a champ. Dorkbox is just for fun.

    #2
    A common upgrade is to put a 650 top end on the 550. Gives you more displacement and a 6 speed trany. A win-win scenario.

    1980 GS1000GT (Daily rider with a 1983 1100G engine)
    1998 Honda ST1100 (Daily long distance rider)
    1982 GS850GLZ (Daily rider when the weather is crap)

    Darn, with so many daily riders it's hard to decide which one to jump on next.

    JTGS850GL aka Julius

    GS Resource Greetings

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      #3
      To answer your question, no, a 750 engine will not bolt in. The 550 frame is too small
      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

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        #4
        I have a 6 speed. Or is that what you meant?
        Originally posted by JTGS850GL View Post
        A common upgrade is to put a 650 top end on the 550. Gives you more displacement and a 6 speed trany. A win-win scenario.

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          #5
          Thank you.
          Originally posted by Big T View Post
          To answer your question, no, a 750 engine will not bolt in. The 550 frame is too small

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            #6
            Yes, you keep the six speed that came out of the 550 but put in a larger top end from the 650
            Cowboy Up or Quit. - Run Free Lou and Rest in Peace

            1981 GS550T - My First
            1981 GS550L - My Eldest Daughter's - Now Sold
            2007 GSF1250SA Bandit - My touring bike

            Sit tall in the saddle Hold your head up high
            Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
            and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

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