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  1. #1
    Moderator HiPeRcO's Avatar
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    What percent of MSX 110/150's suffer early engine failure due to Nikasil plating?

    100%? 50%? 25%? Unknown?

    I've seen part-outs for sale with less than 20 hours due to engine failure. Should a 4 stroke Polaris MSX be considered without accepting the fact that an engine rebuild is definitely required?


  2. #2
    Resident electronics hacker UnityRacing's Avatar
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    I think the root issue is from dumping too much fuel and washing out the cylinder.
    I wouldn't place stock in the 20hr thing. More than likely a lack of maintenance over time, coupled with the assumption that the machine sat for extended periods of time with old fuel is to blame. Or the person is lying about the hours. I mean 20 hour failures should have been covered under warranty - unless it sat unused or the hours are fictional.

  3. #3
    ripcuda's Avatar
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    I'd imagine that would be a hard # to figure. Most of the folks we see here, are having issues. But this can only be a small % of total sold. It seems like of the ones reported, they average around 20-60 hours on them. I remember hearing of a stock one with over 100 hours and thinking... wow!

    Honestly... if a stock MSX 110/150 was for sale...even running well... I'd still tell the prospective buyer they need to plan for a rebuild. I just wouldn't trust one to "go the distance" stock.

    And I'm a Weber engine fan...

    Cheers!

  4. #4
    Kosh's Avatar
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    Don't buy an Polaris MSX with a Weber engine thinking it is/or will be OK. (unless it was previously upgraded) budget to repair the piston bores at the minimum, they are not cheap to repair but I am a fan of them as well.

  5. #5
    hill160881's Avatar
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    My MSX made it to 180 hours and the plating was still fine. It spun a bearing. The plating I believe was not the issue as much as lack of use and poor maintainance. I don't recall the FST engine having this issue?

  6. #6
    ripcuda's Avatar
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    The plating on the Polaris FST (sled) Webers was fixed/improved over the MSXs and has proven to be reliable. And it is possible to use an FST block for the MSX... here's a rebuild thread http://www.greenhulk.net/forums/show....php?t=165358&

    180 hours on an MSX is impressive... mine never made it to 52hrs. Hill, how many hours on your other MSX 150?

    Cheers!

  7. #7
    Matrix 4-Tec spannerspencer's Avatar
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    Quote Originally Posted by hill160881 View Post
    My MSX made it to 180 hours and the plating was still fine. It spun a bearing. The plating I believe was not the issue as much as lack of use and poor maintainance. I don't recall the FST engine having this issue?

    FST had different engine cases (aluminium spec) which us why the nicasil holds fine but flakes on early webers. got one of the biggerst nicasil platers in the world and they would not re plate my weber engine as they said it will hold as a result to ally used. i boughy FST engine parts


    still binned the weber in favour of a 4-tec

  8. #8
    ripcuda's Avatar
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    Spence... you still have your big-turbo Weber engine sitting in the shop after you swapped in the 4-tec?

    Cheers!

  9. #9
    Moderator HiPeRcO's Avatar
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    Are there places that rebuild 4 stroke Webers for less than the price of a new Seadoo?

  10. #10
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by HiPeRcO View Post
    Are there places that rebuild 4 stroke Webers for less than the price of a new Seadoo?
    Yes, but you must supply the Seadoo

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