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Thread: 1994 spx 650

  1. ☑ ORIGINAL POSTER #1
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    Default 1994 spx 650

    Hi, I just bought a 1994 spx 650 and I wanted to know what kind of upgrades are good for it or if I need to replace the engine to make it go fast. How many miles if modded properly can I reach with it? Is it worth the effort and money? I'm really new at this so a little or very much advice is more than welcome.

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    For a 1994 seadoo it wouldn't be worth the aggravation to try to spend money modding it to get like 5 mph more out of it. Sell it and buy a newer faster model.

    Karl
    Please, If you have a "troubleshooting" request, use the correct category in the Sea-Doo Forum first.

    "Premium / Subscribed Members", not getting an answer, pm me directly for Expert Advise.



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  4. ☑ ORIGINAL POSTER #3
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    like what? there selling me a 1998 gs 720 for $1500. is it worth it or not?

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  5. #4
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    Thats a fun ski!!...sister has that, does 55mph-ish. I'd buy it for $1500 bones

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  6. #5
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    Call Dave at impros and tell him you want speed. he may be able to give you another 5 to 10 mph and order a new wear ring and pump seal. If I am not mistaken you may hit speeds above 50 mph without any other up grades. good luck.

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  7. ☑ ORIGINAL POSTER #6
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    who's dave and where do I contact him? is the 50 mph on the 650 or the 720?

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  8. #7
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    Call Dave and ask him questions. Impros 909-370-4900 Good luck Robin

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  9. #8
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    1995 Sea Doo SPX 1999 Sea Doo XP Limited
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    I have a bone stock 1995 SPX and I've had a friend of mine with a ski boat check my speed while we were running side by side on a lake. According to his speedometers (which only go to 55), I was doing a little above 55, so I figure 56 or 57 was my top speed.

    I've had my XP to just a bit past 65 (according to the onboard speedometer). At the time, my VTS gauge was broken so I was having to guess at the trim settings. Now that I've replaced the gauge, I'm going to try a few high speed runs again and see what it tops out at...

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  10. ☑ ORIGINAL POSTER #9
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    can't wait to hear the results

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  11. #10
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    The true reading of speed on the water is with a GPS...

    Karl

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  12. ☑ ORIGINAL POSTER #11
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    Default intake maifold

    I'm curious to know if it should be polished to a mirror finish or do I need to leave some porousity in it.

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  13. ☑ ORIGINAL POSTER #12
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    Also, whats the best rotary valve size for the 650 engine or how can I find out.

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