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  1. #1

    STX-15f engine into 2003 STX900? Ever done before? Please Help?

    As the title states,

    I am curious to found out if it is possible to install an STX-15F engine into my 2003 STX900 and if so, what would it take (parts and fabrication)?

    I am currently thinking about doing the 1100 engine swap, i think this swap is straight foward but I would prefere doing the 15f eninge swap.

    Any information on this subject will help.

    Thanks.


  2. #2
    thesepaperwings's Avatar
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    That would be a big deal but would be kindo of cool. 900 STX or ZXI? The STX hulls are about the same and there wouldn't be huge gains of the 15f hull. It wouldbe cool in a ZXI but I'm not sure it would fit. Try it, we love stuff like this

  3. #3
    madtown_chris's Avatar
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    with 15f prices the way they are, it would be hard for "me" to justify a project like that, but hey knock it out, I'll follow it...!

  4. #4
    Yeah the stx900 and the 15f are the exact same hull if i am not mistaken but I think it will not be cost effective as mantioned above...

    I think i will stick with the 1100 egine project.

  5. #5
    You could also go the 1200 route its the same hull as the STXR except the hull for the R is lighter. lots of Ultra motors out there now.

  6. #6
    thesepaperwings's Avatar
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    If you go for the 1100, there is a guy wanting to sell tripples for it and you will have a close to 70 mph ski.

  7. #7
    Quote Originally Posted by thesepaperwings View Post
    If you go for the 1100, there is a guy wanting to sell tripples for it and you will have a close to 70 mph ski.
    Can you please elaborate this, 70mph ski??? What will i neeed?

  8. #8
    thesepaperwings's Avatar
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    An 1100 with tripples, carbs, plate, will hit just shy of 70. Without pipes you can do a bigbore 1100 that will be over 60 and beat anything out of the hole.

  9. #9
    Quote Originally Posted by thesepaperwings View Post
    An 1100 with tripples, carbs, plate, will hit just shy of 70. Without pipes you can do a bigbore 1100 that will be over 60 and beat anything out of the hole.

    Who would you reccomend for boaring?

  10. #10
    I still like the idea fo the 4stroke engine swap, I just wish someone had a write up on it, I really dont know enough information about it.

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