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  1. #1

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    Replace exhaust on 260, degraded

    Guys what should I do at this point? I am pulling my ski apart to replace the PTO seal and stuff. I took the exhaust can out to scrub it down and noticed heavy salt deposits around the EGT probe. I removed it to clean it all up and noticed the aluminum is broken down on the mount. Should I get it welded so the probe is flush, leave it the way it is and just run it, or scrap the can and get a new one? Trying to keep things stock but if it’s not worth it then will go another route.

    Can you replace just the exhaust without flashing the ECU?
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  2. #2

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    Can anyone tell me what size bung this is so I can find a new one? Appears to be 16 thread but what diameter??

  3. #3
    ptscon's Avatar
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    Quote Originally Posted by tony97gt View Post
    Can anyone tell me what size bung this is so I can find a new one? Appears to be 16 thread but what diameter??
    Probably simplest thing to do is to measure the actual sensor itself. If you happen to have a tap/die set they come with thread measuring tool.

  4. #4

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    Quote Originally Posted by ptscon View Post
    Probably simplest thing to do is to measure the actual sensor itself. If you happen to have a tap/die set they come with thread measuring tool.
    M12x1.5 is the size for the aluminum bung. Found one online and got it today. Going to get it welded on this week.


  5. #5
    It is just a nut welded to the can?

    Grind the nut off and weld a new one on.

    I had a hole in my can and had it welded as if the can is in great shape, just fix it.

    Again my 2 cents

  6. #6
    ptscon's Avatar
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    A cheap fix would be to fill it with JB Weld and tap with heli coil but welding will be nicer

  7. #7

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    Please no JB weld. Do it right. Find an alum nut the size you need and have it tigged on. JB weld causes havoc to the welder(person and machine) when trying to weld something that has been slathered with JB weld, even after grinding that garbage off. Been there done that.

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  9. #8
    RiverRat71's Avatar
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    If the water box is corroded as the bung I would look for a used fresh water unit. Welding corroded aluminum can be a PITA if its bad & give mediocre results. If the corrosion is isolated to the bung then it should turn out ok. RR

  10. #9
    My name is Sean and I am addicted to STXs smokeysevin's Avatar
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    Jb weld plus heat and pressure equals a popped bung hole.

    Sean

  11. #10

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    The box itself isn’t corroded or I would have trashed it. The bung was $15 and the weld job is $45. Not really worth cutting corners in my opinion to save $25. My intentions were to source the bung which I finally did, but trying to figure out the size of the threads was the issue. Contacted Bosch and squared it all away. Dropped or off today at the weld shop and will have it back Tuesday. Thx guys.


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