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Reboring from 750 to 850

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    Reboring from 750 to 850

    Hi guys,
    I am going to go through with a renovation of my 750 from 77 this winter.
    In that connection I had planned to rebore the cylinders and put in new piston rings.

    But now I am thinking about reboring it to a 850 and giving it oversized pistons. Has anybody tried that? Is it a bad idea? What would it mean for the the bikes performance?

    Cheers...

    #2
    Seems to me that somebody named Suzuki did exactly that....and then added a shaft drive to it and created a whole new line of motorcycles.

    I think it may be best to wait for Nick to reply...I am sure he knows the exact specifics.
    Bertrand Russell: 'Men are born ignorant, not stupid. They are made stupid by education.'

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      #3
      Wiseco makes an 844cc kit for your bike...that would be your best bet. Compression is at a managable 10.25:1 and would be a great boost for your bike. It is a 2mm overbore.

      Hap

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        #4
        I'm thinking about doing exactly the same to my 1977 750. Are the stock liners ok to take the extra boring - from 65mm to 69mm?

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