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Thread: jet works mod

  1. #1

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    jet works mod

    can anyone explain to me what fercho's jetworks mod does and how it improves the performance of a jetski. does it give more top=end speed ?


  2. #2
    pokplalya22's Avatar
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    It's a holeshot mod. Basically keeps the waterbox dry until desired rpms with a pressure release valve. Will not do anything for top end, but big difference off the line

  3. #3
    Yamaha artisan Cutlass's Avatar
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    Yep. Normally at idle, water flows out of the rear of the exhaust pipe and starts to pool up in the water box. So after a slighty extended idle time, the water box nearly fills up with water. When you go to give it throttle, you'll get a slight delay/hesitation while the exhaust clears the water out of the waterbox, then the ski will take off.
    With the Jet Works mod, the water flow to the water box is blocked off at idle keeping it drier and eliminating that power delay/hesitation. And as the rpms pick up and the valve opens allowing normal water flow through the exhaust to cool it.

  4. #4

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    thanks for the info guys, i am considering doing some more engine and pump mods to my ski, i am really looking for the most top-end speed i can get without having to go big bore but it doesn't mean i won't go. lol

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