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  1. #1

    Join Date
    Jun 2006
    Location
    Kalispell, Montana
    Posts
    31

    07 Speedster 200 430 HP RPM ????

    WOT I only get 7500 RPMs, everything is stock, just curious why not closer to the limiter. I have not changed plugs, and the boat rins great. It will hit 8000 RPMs if I nail it at a dead stop for a second....but not t WOT.


    Ned


  2. #2
    Im not positive but im guessing you are running dual 215hp rotax and if you are and your losing rpm's id take it in right away. It may just be something blocking the intake grate, but it could be that your supercharger washers are starting to slip causing it to lose rpm's. If it is the washers, you'd want to change them asap before they get into your engine causing total engine failure, also if you do need new washers replace them with titanium or coated stanless steel washers, youll get much more life out of them.

  3. #3

    Join Date
    Apr 2007
    Location
    Vancouver, BC
    Posts
    204
    what is your altitude? (my doo seems to run 7900 RPM at sea level but only gets to about 7600 at 3000 ft altitude at the summer lake)

  4. #4

    Join Date
    Jun 2006
    Location
    Kalispell, Montana
    Posts
    31

    Yes 3000 feet

    Yes I am at 3000 feet.....but during the 10 hour, shouldn't they adjust that?

  5. #5

    Join Date
    Apr 2007
    Location
    Vancouver, BC
    Posts
    204
    Quote Originally Posted by ncarbon View Post
    Yes I am at 3000 feet.....but during the 10 hour, shouldn't they adjust that?
    I've never really heard of BRP adjusting anything. There is a urban legend that the ECM self adjusts by advancing the timing progressively between 7-10 hrs but it won't make up for altitude.

  6. #6
    King_Of_Fun's Avatar
    Join Date
    Jul 2007
    Location
    Catawba Island, Ohio
    Posts
    2,703
    You need 6-mm less pitch in the trailing edges of the impellers to bring your rpms up to 8100. That's more than can adjusted, so you need impellers with less pitch. BRP has a compaign to replace impellers in high elevation locations. You need to ask you dealer about this. Do a search as this has been discussed before... Ron

  7. #7

    Join Date
    Jun 2006
    Location
    Kalispell, Montana
    Posts
    31

    I searched alittle

    I have thought of upgrading to 14/19 or 13/18 solas...if there really is a BRP way to do it for free, that would be awesome.....



    Ned

  8. #8

    Join Date
    Jun 2006
    Location
    Kalispell, Montana
    Posts
    31

    Can't find Bulletin

    Have read a few post referring to a Bulletin, but didn't find one. Does it apply do boats? and when was this done?

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