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  1. #1
    emilbolboaca's Avatar
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    Thoughts about my setup (I wanna go fast)

    Hi guys

    I tried to post this thread in 2 stroke performance but I couldn't so I will post it here.

    I just got this jet ski 2000 GP1200r with a blown engine but with some good parts on it:
    R&D ride plate
    Intake grate
    Prop???
    Carbs with 125 main, 110 pilot, choke removed, F/A, pop off just set to 45psi(previous much higher), 1 turn low, 1 1/2 high and primer
    Riva stinger 3, D plate and free flow
    Engine will have a 3* keyway, new pistons and a 140psi milled head (thanks to Ron) and will run 93 octane gas

    Previous engine had #3 cyl and piston completly busted, the rod was thrown outside the crank case and #2 piston had some signs of detonation. Possibly combination keyway with low octane gas?

    I did some research on the forum and the setup is more or less ok except stinger and keyway.

    What do you guys think about this setup before I put the whole engine together, any imput is appreciated.

    Thank you


  2. #2
    Moderator OsideBill's Avatar
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    OK for starters

    1. you can't have a D-plate and a stinger 3, it is one or the other. D-plate goes in stock exhaust stinger which will yield more speed.
    2. Seal the pump shoe
    3. what size and type impeller?

  3. #3
    Moderator DrewNJ's Avatar
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    With the key on a stock carbed ignition be very careful cruising around that 5k rpm range... I wouldn't hang there to long.
    Doug

  4. #4
    emilbolboaca's Avatar
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    Quote Originally Posted by OsideBill View Post
    OK for starters

    1. you can't have a D-plate and a stinger 3, it is one or the other. D-plate goes in stock exhaust stinger which will yield more speed.
    2. Seal the pump shoe
    3. what size and type impeller?
    Yes, I know I made a mistake, I have D plate on my other ski. About the impeller, I don't know the size, I didn't got to it yet.

  5. #5
    emilbolboaca's Avatar
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    Quote Originally Posted by DrewNJ View Post
    With the key on a stock carbed ignition be very careful cruising around that 5k rpm range... I wouldn't hang there to long.
    Doug
    I know, I think that is why it blew in the first time or they didn't used 93 octane gas.

    What about that stinger? That will slow me down a bit. Right?

  6. #6
    Moderator DrewNJ's Avatar
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    Quote Originally Posted by emilbolboaca View Post
    I know, I think that is why it blew in the first time or they didn't used 93 octane gas.

    What about that stinger? That will slow me down a bit. Right?
    stock stinger is known for being the fastest top speed for the one's you've mentioned.

  7. #7
    emilbolboaca's Avatar
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    I will give it away one day. Now I am curious how fast will be when it is done.

  8. #8
    WATER WOODY's Avatar
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    Quote Originally Posted by emilbolboaca View Post
    I will give it away one day. Now I am curious how fast will be when it is done.
    Welcome to the forum. Has all the safety work been done yet?

    tunnel reinforcment
    800/1200 grate

  9. #9
    emilbolboaca's Avatar
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    Thank you Water Woody

    The tunnel is not reinforced yet. I will try to do that (according to this forum specs) before it hits the water.

    It has a Riva plate and a Riva Top loader grate.

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