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  1. #1
    hill160881's Avatar
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    Super chargers, why are they still used if they fail so often?

    As I am about to get a ski powered by a ROTAX super charged engine I have done lots of reading on failures of these super chargers. Some brands are better than the other but this seems to be a real issue. I look at the cost of buying a super charger vs a turbo and they are about the same cost. So why has the industry not replaced these problematic superchargers with problem free turbos? The cost of rebuilding an SC a few times would pay for a turbo.

    Since the SC is the week link why has it not been replaced by the three big pwc producers?


  2. #2
    BetaRoc's Avatar
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    My concern with having to rebuild a SC is the reason I went with a N/A ski.
    I've been wondering the same thing.

  3. #3
    oklagp1200r's Avatar
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    Makes them money on the backside after the sell.
    it's the American way!

  4. #4
    hill160881's Avatar
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    But if one company went turbo they would have a huge edge over the other two. A setup that just needed basic servicing for longer than 300 hours in any of there current sc platforms would sell better.

  5. #5
    Moderator beerdart's Avatar
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    Turbos were OEM for Polaris and Honda and both no longer produce PWC's

  6. #6

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    Honda did use a turbocharger in their boats. Usually the main reason for a SC is the torque curve at low engine speeds is fatter. Boats don't have a transmission to multiply the torque at low speeds like, say, a car so torque is an important consideration. Also, the failure of superchargers is mostly on the Yamahas. They use a very complex assembly to generate the required free wheel action of the SC impeller. The SC on the Sea-Doo engine is very simple and now that they changed the friction washers from ceramic to metal the failure rate has dropped.

  7. #7
    hill160881's Avatar
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    Quote Originally Posted by beerdart View Post
    Turbos were OEM for Polaris and Honda and both no longer produce PWC's
    I know it was not the turbo that killed the polaris. It was rushing a poorly designed ski into production trying to keep up with the other companies new 4 strokes. Then not following it up with a revised modle. The platform could have worked well with some refining. But you already know the benifets to the MSX hull. I have no idea why Honda got out of the pwc business. I would suspect they were a lot like there cars, just bla but reliable and could not capture enough market share.


    Besides turbo technology has has come a long way from those thrust bearing turbos back then.

    It would be nice to see a company give it a try.

  8. #8
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by pro1200 View Post
    Honda did use a turbocharger in their boats...
    Would you happen to have a link for that? I am curious...
    Last edited by K447; 08-10-2015 at 09:59 AM.

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  10. #10
    YoYamma's Avatar
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    Quote Originally Posted by hill160881 View Post
    But if one company went turbo they would have a huge edge over the other two. A setup that just needed basic servicing for longer than 300 hours in any of there current sc platforms would sell better.
    Maybe one reason nobody wants a turbo is we all saw the terrible turbo-LAG on those Hondas when we were blasting them off the water with our superchargers almost 10 years ago.

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