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  1. #1

    1997 GP1200 Updates.... Just bought and need opinions??

    I just bought this 1997 GP1200 and the previous owner updated and rebuilt motor with the following...
    COOL HEADS
    WISECO PISTONS,WISECO HOT RODS AND CRANKSHFT
    CYLINDER BORE TO 85.5
    WATERBOX MODIFIED AND SHORTENED 3 INCHES
    CARBS REJETTED MAIN 2.5 AND ONE SIZE UP ON LOWER
    COMPRESSION IS 140 138 138

    The local Yamaha dealer says it is a fast Buoy ski???? Would not be good for trips out on the lake for long periods???
    HELP
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  2. #2
    Yamaha artisan Cutlass's Avatar
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    From the blue graphics below the rub rail, it looks like a 98 hull with the Red 97 seats, hood, cowl. Looks like really nice ski. It should be fine to take out for long lake trips. one thing you need to know, you should warm the engine up for a few minutes with Wiseco pistons (or any pistons for that matter) before hammering on it WOT. The Wiseco's have a different expansion and contraction rate when compared to some other pistons so most around here recommend you warm it up nicely before hammering on it so you don't stick a piston.

  3. #3

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    Quote Originally Posted by Cutlass View Post
    From the blue graphics below the rub rail, it looks like a 98 hull with the Red 97 seats, hood, cowl. Looks like really nice ski. It should be fine to take out for long lake trips. one thing you need to know, you should warm the engine up for a few minutes with Wiseco pistons (or any pistons for that matter) before hammering on it WOT. The Wiseco's have a different expansion and contraction rate when compared to some other pistons so most around here recommend you warm it up nicely before hammering on it so you don't stick a piston.
    Or a 1997 with 98 graphics. Check the vin on back of ski for correct year. Yeah that should be a cool ride with those mods. Use 93 octane or better.And yes warm it up before WOT.

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