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  1. #1

    gp1200r pump housing?

    Just got my rebuilt engine into my 2000 gp1200r and started it up on the trailer. Motor sounds good but I can hear almost a popping or banging that sounds like its coming from the drive. I've done some research but not sure, can the impeller actually make contact with the housing? Also, after riding the first time rpms are good and motor is running fine but top speed is mid to upper 50's. This is my first watercraft so any suggetions would be appreciated.


  2. #2
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
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    Quote Originally Posted by yamaha_2000r6 View Post
    Just got my rebuilt engine into my 2000 gp1200r and started it up on the trailer. Motor sounds good but I can hear almost a popping or banging that sounds like its coming from the drive. I've done some research but not sure, can the impeller actually make contact with the housing? Also, after riding the first time rpms are good and motor is running fine but top speed is mid to upper 50's. This is my first watercraft so any suggetions would be appreciated.
    On the trailer it is normal to hear noises. If you want to be safe make a video and we will listen to it and tell you if it's normal. Thank you, Jim
    And welcome to the forum.

  3. #3
    Thanks a bunch Jim, like I stated am new to this and just noticed the noise while out of the water. When I lake tested it didn't hear anything. I'm going to head out again this weekend to break in the new engine. I will listen and watch closely as it only has about 30 minutes on the new motor.

    Thanks again,

  4. #4
    also when you flush the ski, water runs down past the blades on the prop as it is spinning and you can also hear that, ting a ding ding...

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