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GSX750ES : Inserting valve guides

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    #16
    I wasn't able to get a reasonably priced high quality reamer and I came up with an idea which seems to be the most simple to precisely implement : Machining the new guides to 11.05 mm.
    How come nobody suggested that ? Am I missing a difficulty or a risk involved ?

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      #17
      Originally posted by dpascal View Post
      I wasn't able to get a reasonably priced high quality reamer and I came up with an idea which seems to be the most simple to precisely implement : Machining the new guides to 11.05 mm.
      How come nobody suggested that ? Am I missing a difficulty or a risk involved ?
      It is possible but over 16 guides you WILL stuff up one or two....
      The amount you're taking off is so small that effectively you're polishing it off.
      If you want to try it, put the guide between centers in the lathe so as to maintain the OD parallel to the bore.

      Ask the engine recon shop about honing the head to suit the guides. They may have a setup which would be more accurate than reaming.

      It is a pity you've already bought the guides as it is much simpler to get aftermarket guides which press straight in.

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        #18
        The guys at the shop told me that they will be able to achieve much greater accuracy of they machine the guides them-self because they are easy to center.
        Assuming that working on 16 guides will cost me less than a third of what would cost me to buy new guides, I decided in favor of this option.

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