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Thread: 13/18 on S200

  1. #1
    vltor17's Avatar
    Join Date
    Nov 2007
    bozeman, mt

    13/18 on S200

    Hi guys. The lakes I run on are 3800 to 4800. Was wondering if anyone had tried a 13/18 on the S200 at these altitudes, or if you guys were just going with the 14/19 and depitching a little. Thanks, Cole

  2. #2
    cyoungesq's Avatar
    Join Date
    Apr 2006
    Bridgeport, CT
    At sea level, the 14/19 would be just about right for a slightly modded S200. You're stock with the 4" intakes and coupled with the altitude (the effects with which I have no experience) I would guess the 13/18 would be a good estimate. If anything, maybe you add a little.

    I'm curious as to how the rpms are affected by altitude, all other factors being equal . . . like 8100 at sea level and 7700 at 4500'?

  3. #3
    vltor17's Avatar
    Join Date
    Nov 2007
    bozeman, mt
    Right now I'm running the factory high altitude impellers. They are reccomended for over 4000'. They are pretty close. On the lake at 3800', I run right about 8100. At 4800, I'm at about 7800. I put in the high altitude ones before I even ran the boat, so I don't know what the stockers would do.

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