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  1. #1
    Whats that whistling noise? jtskier11's Avatar
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    Nozzle chat/sizing....

    I have an 85mm GPR nozzle on my FZ. I know that the stock FZ nozzle is odd shaped (oval) and I cant remember the size. But since I put the GPR nozzle on is there something I should do with the stock exit nozzle now also?? Just seeing what little stuff I can or could to to jump to 80 with my current setup.


  2. #2
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
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    the steering is oval that needs to be opened up round and at 92 mm

  3. #3
    mjh3ides's Avatar
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    If you bore it, you'll want it 92mm(stock is 87 x 90). I doubt it'll give you much more top speed, maybe a few tenths, but it should improve acceleration a little. Just make sure the machinest knows it's important to get the hole centered. I had one done at a local shop for $20 to replace the plastic stocker on my GPR, & they screwed it up. A friend of mine did another one for me at his dad's shop on a 3-axis lathe & got it perfect. Just keep in mind, boring the steering nozzle to 92mm will give you a big dead spot in the steering if you go back to the stock 83mm reduction nozzle come fall, so you might want to buy a second one to have bored if you go this route. They've gone up in price a little but can still be had from boats.net for $30.

    The R&D cone would help your top speed a little too.

  4. #4
    mjh3ides's Avatar
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    Quote Originally Posted by JIM'S PERFORMANCE View Post
    the steering is oval that needs to be opened up round and at 92 mm
    +1, guess I type too slow.

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