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  • #21
    This has my interest, I recently picked up a high compression piston kit for a 1600 ( 2001 Silverado ). The carb is jetted, I have V&H Pipes and a Dyna 3000. I am not sure if I should take the plunge and install these pistons or leave it alone as she runs great and everything is dialed in. Im not looking for a crazy race bike, but I like some power, any suggestions ? I am on the fence, looks like your an expert here and Im not sure what the actual difference would be if I install. Do you think I can pull it off with the motor in the frame?
    Thx

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    • #22
      The motor does not have to come out of the frame to install pistons, You would need Cylinder base and head gaskets at minimum. The valve cover gasket and rocker plate gasket may be able to be re-used.Stock bore hc pistons will add some decent power. Here are Dyno sheets published by Yamaha using their Speedstar stage kits. Click image for larger version

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      • #23
        Thank You, I already ordered the gaskets- this is good news, winter work is going to get interesting...

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        • #24
          Click image for larger version

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ID:	89155 Here is mine with both cylinders removed and engine still in the frame.

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          • #25
            very nice numbers im pushin 95hp with similar tourqe numbers with a 110 kit and upgraded mikuni

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            • #26
              What exhaust are you running? Also who's heads are you using?

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