Results 1 to 7 of 7
  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
    Location
    High Rock Lake
    Posts
    250
    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
    Location
    doylestown PA, sea isle city, nj
    Posts
    569
    +1
    1
    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
    Location
    High Rock Lake
    Posts
    250
    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
    Location
    Michigan
    Posts
    533
    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

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Should cylinder head on a 787 RFI look a little melted?
    By NorthShoreGuy in forum Sea Doo Open Discussion
    Replies: 2
    Last Post: 12-03-2010, 12:11 AM
  2. shaving the heads
    By polarisman01 in forum Polaris PWC Performance
    Replies: 23
    Last Post: 09-02-2007, 12:17 PM
  3. Anyone know the head torque Specs on a PolarisSLX 1050?
    By FastEddie597 in forum Polaris How To & FAQs
    Replies: 4
    Last Post: 07-19-2007, 02:06 PM
  4. milled/shaved heads on 1100?
    By codemanrose in forum Yamaha Old School Skis
    Replies: 15
    Last Post: 05-16-2007, 05:49 PM
  5. torque value on the heads, jugs, and cases on a 96 sl780??
    By gvnitup in forum Polaris How To & FAQs
    Replies: 0
    Last Post: 05-04-2007, 04:39 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •