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  1. #1

    Shaving the head on a 787

    I like to know what is the amount that can be takin off the head without installing high performance heads, rings, or any other stuff that will cost to much. I know that you can change the gasket between the cylinder and the block but that would change the stroke of the piston height and where the RAVE exhaust.

  2. #2
    I love water's Avatar
    Join Date
    Jan 2010
    High Rock Lake
    20 thousandths is the most you can go I THINK. I ave it done on my 787.

  3. #3
    WBoulton's Avatar
    Join Date
    Mar 2010
    doylestown PA, sea isle city, nj
    can you do this and get away without rejetting it?? I know you can with some other 2 strokes but i wasnt sure on these.

  4. #4
    I love water's Avatar
    Join Date
    Jan 2010
    High Rock Lake
    I did not do mine.

  5. #5
    So do you shave the head or the cylinder head. I notice that there is a lip on the head that sits in the gasket on the cylinder head and if you take that down 20 thous that would remove the lip by 50%. The machine shop wants $55 to shave the head and hone cylinders. I think the cylinder is a better choice. What do you guys think.

  6. #6
    "Tearing it up on the water" seadoobutch787's Avatar
    Join Date
    Nov 2007
    A machine shop is use to dealing with 4 stroke car heads that are a flat mill. When you mill a seadoo head or any other head you have to recut the squish band after you mill it or you can end up detoing the engine and that will cost more $$$$$. A good pwc mechanic like Group K or Perry Performance charges $90 bucks and they would do alot better job.

  7. #7
    Thanks, I'll send them Group K

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