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Thread: Your opinion please!

  1. #1
    Lake Ape
    Hey All,
    My boat isn't a V-Drive but I figured you could give me a good answer anyhow! I recently bought two 2003 MB Sports 190 Plus ski boats at a bank repo auction (I had to buy both, they would not separate). I don't really know much about boats. One had a blown motor when I bought it so I replaced the old 5.0 Chevy with a Fast Burn 400 SBC crate motor with the help of AZ speed and marine. I plan to keep this one and sell the other. Anyway, I took it out last weekend and had a blast in the boat, it's freakin' great! This weekend I start to get a vibration at about 4000 rpms and the motor is good for at least 6000 easy. Could the small dings in the prop be the source of the vibration or not?
    http://www2.*** http://www2.***
    I have checked everything else, the shaft is straight, all the bearings are good, etc.

  2. #2
    It should be. That ding should be very noticeable when running.

  3. #3
    yes the prop is a problem. did you check the run out of the shaft???

  4. #4
    keep a close eye on that under water gear - spinning at 6000 with that prop could be trouble

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