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  1. #1

    Ever see a cracked intercooler on RXT???

    I've got water in my intake hoses, intercooler and SC, 08 RXT 255. Pulled the intercooler and by mouth, pulled a vacuum and pressurized the intercooler and it holds vacuum and pressure.

    I will take it to a radiator shop tomorrow to be tested.

    2 things....
    What PSI does the water side of the intercooler run??? I'm thinking it should hold 20 PSI no problem???

    Anyone ever hear of an intercooler going bad???

    Thanks, Jim


  2. #2

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    [QUOTE=Jim W;1378025]I've got water in my intake hoses, intercooler and SC, 08 RXT 255. Pulled the intercooler and by mouth, pulled a vacuum and pressurized the intercooler and it holds vacuum and pressure.

    I will take it to a radiator shop tomorrow to be tested.

    2 things....
    What PSI does the water side of the intercooler run??? I'm thinking it should hold 20 PSI no problem???

    Anyone ever hear of an intercooler going bad???

    Thanks, Jim[/QUO
    you could do a check while its still in the hull

  3. #3
    [QUOTE=jetskibill9999;1378039]
    Quote Originally Posted by Jim W View Post
    I've got water in my intake hoses, intercooler and SC, 08 RXT 255. Pulled the intercooler and by mouth, pulled a vacuum and pressurized the intercooler and it holds vacuum and pressure.

    I will take it to a radiator shop tomorrow to be tested.

    2 things....
    What PSI does the water side of the intercooler run??? I'm thinking it should hold 20 PSI no problem???

    Anyone ever hear of an intercooler going bad???

    Thanks, Jim[/QUO
    you could do a check while its still in the hull
    LOL too late..... It's out.

    I never have water in the bilge and I can't think of anywhere else water could be getting into the intake side. The intercooler had about 1/2 cup of water in it.

    My Sea Doo surges on acceleration and after a few WOT runs the water clears out and it if fine for a while.

    Jim

  4. #4
    kraven's Avatar
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    Cool Pressure testing the intercooler

    I went through this process last fall when I suspected that my Rotax Racing inter-cooler was cracked/leaking-it was not.

    I wouldn't take it to any shop, it's REAL E-Z to test yourself.

    I used a couple of fittings I had laying around like 1/2" pipe "T" and a 1/4" air compressor quick change fitting. Use some 5/8" and 3/4" rubber heater hose and connect that to the "T" and thread your 1/4' quick change fitting into that. Regulate (or bleed down) your air compressor to 45 P.S.I. and hook it up.

    I hooked it up to 45 P.S.I. air pressure and submerged the entire inter-cooler in a 5 gallon bucket of water, ONE hour later, NO air bubbles.

    I even tried the garden hose water pressure running through it for a while, same results, No LEAKS.

    As far as the source of the water in your intake, I had the same thing happen, turns out it was from a while ago, prior incident, and the water was sitting in the "low spot" in the intake manifold. Pulled my hair out for 4 + trips at the Lake, and that's what it turned out to be.


    The driveshaft/carbon seal could possibly be one of the possible sources of water entering your hull.

    Hope this helps




    Quote Originally Posted by Jim W View Post
    I've got water in my intake hoses, intercooler and SC, 08 RXT 255. Pulled the intercooler and by mouth, pulled a vacuum and pressurized the intercooler and it holds vacuum and pressure.

    I will take it to a radiator shop tomorrow to be tested.

    2 things....
    What PSI does the water side of the intercooler run??? I'm thinking it should hold 20 PSI no problem???

    Anyone ever hear of an intercooler going bad???

    Thanks, Jim

  5. #5
    Quote Originally Posted by kraven View Post
    I went through this process last fall when I suspected that my Rotax Racing inter-cooler was cracked/leaking-it was not.

    I wouldn't take it to any shop, it's REAL E-Z to test yourself.

    I used a couple of fittings I had laying around like 1/2" pipe "T" and a 1/4" air compressor quick change fitting. Use some 5/8" and 3/4" rubber heater hose and connect that to the "T" and thread your 1/4' quick change fitting into that. Regulate (or bleed down) your air compressor to 45 P.S.I. and hook it up.

    I hooked it up to 45 P.S.I. air pressure and submerged the entire inter-cooler in a 5 gallon bucket of water, ONE hour later, NO air bubbles.

    I even tried the garden hose water pressure running through it for a while, same results, No LEAKS.

    As far as the source of the water in your intake, I had the same thing happen, turns out it was from a while ago, prior incident, and the water was sitting in the "low spot" in the intake manifold. Pulled my hair out for 4 + trips at the Lake, and that's what it turned out to be.


    The driveshaft/carbon seal could possibly be one of the possible sources of water entering your hull.

    Hope this helps
    Thanks Kraven, that does help.

    My Sea Doo only has 32-34 hrs on it. Not that there couldn't be a defective seal on the driveshaft. But, the inside of my hull is always dry.

    The radiator shop I deal with might test the intercooler for free or a minimum charge. since it's out, I will start there.

    When I took the intercooler off, I could actually shake water out of the fins.

    There's a ribbed hard plastic hose that run's from the left rear up to what I believe is the air intake. I could pull that hose off so any water in the bilge would be 1 1/2' below the air inlet and try that. Although, thinking about it, that hose was dry.....

    Radiator shop tomorrow and I will know more.

    Jim

  6. #6
    Moderator beerdart's Avatar
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    Jim Welcome to the Hulk.

    Keep us posted on your findings.

  7. #7
    Quote Originally Posted by beerdart View Post
    Jim Welcome to the Hulk.

    Keep us posted on your findings.
    Will do....

    Jim

  8. #8

    YUP, it's cracked/hole

    just talked to my radiator shop.
    Intercooler has a small crack/hole and they think it's in a place they can't get at to weld. Don't quite understand why they can't get at it but, I'm not looking at it either.

    I had 2 complaints under warranty about the surging on acceleration. Local dealership will work with me towards getting it covered under warranty.

    Jim

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