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  1. #1

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    How does my boost look -won't hit max rpm Candoo snapshot



    Bought a pair of 2013 GTX 260 IS LTD's with around 68 hours on them. One runs great , this one will only hit 7500 rpm max and around 62mph. I have done the following:

    comp test (124, 122, 124 hot)
    swapped coils from perfect performing machine
    new plugs, new battery (was not great)
    pressure test intercooler - held 30 psi for 2 hours perfect
    Impeller and wear ring look like new

    Do I have a boost issue? Or should I be looking at a dragging IBR or pump bearings or something?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  2. #2
    ptscon's Avatar
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    It looks you're only making about 7psi of boost, it should be around 10 so you're missing some for sure.

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  4. #3

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    I'm at sea level so looking about 8 psi at 7500... seems if it could spin the charger to 8100, I'd get a couple more psi. Someone suggested checking the fuel pump. I think I'll check SC slip and fuel pump. maybe not in that order.

  5. #4
    ptscon's Avatar
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    Oh yeah didn't notice the RPM, was just looking at throttle position. RPM vs boost looks in line.

    Yes it could be bad clutch slip or a small boost leak.

    SC is a bit of a chicken or the egg, which came first. You need RPM to spin the SC to gain boost but you need boost to spin higher RPM. Everything has to be spot on to gain RPM and boost together.

  6. #5
    1tommygunner1927's Avatar
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    Quote Originally Posted by hystat View Post


    Bought a pair of 2013 GTX 260 IS LTD's with around 68 hours on them. One runs great , this one will only hit 7500 rpm max and around 62mph. I have done the following:

    comp test (124, 122, 124 hot)
    swapped coils from perfect performing machine
    new plugs, new battery (was not great)
    pressure test intercooler - held 30 psi for 2 hours perfect
    Impeller and wear ring look like new

    Do I have a boost issue? Or should I be looking at a dragging IBR or pump bearings or something?
    .
    Your CanDoo "logging" for a stock 260 looks a little off, rpm wise. Pull supercharger for rebuilding.....every 100 hours or every 2 years, which ever comes first.

  7. #6
    Site Admin Green Hulk's Avatar
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    Boost leak, or slipping supercharger clutch. When is the last time the supercharger has been rebuilt?

  8. #7

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    Quote Originally Posted by Green Hulk View Post
    Boost leak, or slipping supercharger clutch. When is the last time the supercharger has been rebuilt?
    Never. Going to get local dealer to do in spring.

  9. #8
    Lake Lion
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    Send it to Jerry. You won't have to wonder if it is done correctly.


  10. #9
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by hystat View Post
    Never. Going to get local dealer to do in spring.
    Don't pay too much! I would be happy to handle the rebuild for you at half the price your dealer will charge. Here's the link to my rebuild service in the GreenHulk Store.
    http://www.4-tecperformance.com/inde...oducts_id=5170

    I only use genuine Sea Doo rebuild kits and my turn around time is one day.

  11. #10

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    Quote Originally Posted by hotbutta View Post
    Send it to Jerry. You won't have to wonder if it is done correctly.
    Quote Originally Posted by Green Hulk View Post
    Don't pay too much! I would be happy to handle the rebuild for you at half the price your dealer will charge. Here's the link to my rebuild service in the GreenHulk Store.
    http://www.4-tecperformance.com/inde...oducts_id=5170

    I only use genuine Sea Doo rebuild kits and my turn around time is one day.
    When my time comes, I'm sending it to the guy that has done a million of them. See Jerry above.

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