• Nizpro Marine's 633-Horsepower Supercharged Yamaha

    The World's Most Powerful Outboard

    Nizpro Marine created this 633-horsepower supercharged monster, and You all need to check this out because I am blown away. They focus on upgrades and modifications to Yamaha outboards and they developed the superchargers for those engines entirely in-house. The engineering involved is phenomenal. Here's the description of the 633R from their YouTube page:


    Nizpro Marine has developed the worlds most powerful outboard.

    You start with Yamaha’s brilliant, and dare we say venerable 4.2l V6. You add a custom plenum (hence the red alien), separate, additional raw water cooling, and Eaton’s R1900 supercharger on top. Yet the really brilliant effort is in the re-map of the factory brain.

    Now the 633RR adds a bigger pulley, new injectors, forged pistons, new valve springs, ported heads, and billet conrods, then some other more incidental bits too like throttle body and injectors, as well as a new drive leg. All very cool stuff, and the reason the whole thing is as bullet proof as the standard 300hp from Yamaha.








    This article was originally published in forum thread: Nizpro Marine's 633-Horsepower Supercharged Yamaha started by Scream And Fly View original post
    Comments 7 Comments
    1. FMP's Avatar
      FMP -
      Next 200APX Merc...
    1. tpd321's Avatar
      tpd321 -
      I'm a 2-stoke guy thru and thru, but like MotoCross Dirtbikes and street bikes 4-strokes tech is coming on fast and powerful.
      Undeniable power capabilities
    1. DeudeMann's Avatar
      DeudeMann -
      "they developed the superchargers for those engines entirely in-house"
      also
      "
      Eaton’s R1900 supercharger on top. "


    1. davidson02's Avatar
      davidson02 -
      Nice built.
      Baltimore Drywall Contractors


    1. katesharma's Avatar
      katesharma -
      That sounds absolutely incredible! Nizpro Marine's creation, the 633R, seems like a powerhouse of engineering. The level of detail they've put into modifying Yamaha outboards is impressive, especially with the in-house development of superchargers. It's fascinating to see how they've enhanced the V6 engine with custom components like the plenum and the Eaton R1900 supercharger, along with additional cooling and a meticulous re-map of the factory brain. Swimming Pool Contractors Raleigh NC
    1. PaulZ's Avatar
      PaulZ -
      That's impressive! The Nizpro Marine 633RR sounds like a real beast of an outboard motor. Roofing Companies in Northern Kentucky
    1. David - WI's Avatar
      David - WI -
      Quote Originally Posted by tpd321 View Post
      I'm a 2-stoke guy thru and thru, but like MotoCross Dirtbikes and street bikes 4-strokes tech is coming on fast and powerful.
      Undeniable power capabilities
      Yes, as long as you allow them more displacement, weight, and cost; they are competitive!
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