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  1. #1
    RXP 260 X Short Course Veteran RXP244's Avatar
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    MID Darton Sleeves

    http://www.4-tecperformance.com/inde...oducts_id=2275

    Can anybody tell me if these allow you to go back to stock bore size and use OEM head gaskets or do they suit plus sized pistons and require aftermarket head gaskets.


  2. #2
    ricky86's Avatar
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    they come in stock bore and you can use the stock head gasket

  3. #3
    Eastside Powersports Slow 91's Avatar
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    Here's a picture of one I just did. Standard bore, stock headgasket. Make sure whoever is installing it step decks the block. Also, be careful where you get the sleeves from, some people offer cheap knockoffs and they are not correct and have problems sealing.Jerry sells the seadoo specific ones in the store.

    Click image for larger version. 

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  5. #4

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    Quote Originally Posted by Slow 91 View Post
    Here's a picture of one I just did. Standard bore, stock headgasket. Make sure whoever is installing it step decks the block. Also, be careful where you get the sleeves from, some people offer cheap knockoffs and they are not correct and have problems sealing.Jerry sells the seadoo specific ones in the store.

    Click image for larger version. 

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    That's a work of art, what do you charge to install, bore and step deck?

  6. #5
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Quote Originally Posted by Slow 91 View Post
    Here's a picture of one I just did. Standard bore, stock headgasket. Make sure whoever is installing it step decks the block. Also, be careful where you get the sleeves from, some people offer cheap knockoffs and they are not correct and have problems sealing.Jerry sells the seadoo specific ones in the store.

    Click image for larger version. 

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    Hey Slow

    What measurement do you or Mazworx for that matter, recommend for the step?

  7. #6
    JPR's Avatar
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    What's the theory behind the step with these sleves ?

  8. #7
    Eastside Powersports Slow 91's Avatar
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    Quote Originally Posted by RXP244 View Post
    Quote Originally Posted by Slow 91 View Post
    Here's a picture of one I just did. Standard bore, stock headgasket. Make sure whoever is installing it step decks the block. Also, be careful where you get the sleeves from, some people offer cheap knockoffs and they are not correct and have problems sealing.Jerry sells the seadoo specific ones in the store.

    Click image for larger version. 

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    Hey Slow

    What measurement do you or Mazworx for that matter, recommend for the step?

    Im not sure what mazworx does or if they even step deck but I have found if your step decking a seadoo/darton block it requires a specific step in order to properly seal the head gasket

  9. #8
    Eastside Powersports Slow 91's Avatar
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    Quote Originally Posted by JPR View Post
    What's the theory behind the step with these sleves ?
    you step deck the block so it has more clamping force around the cylinders. You could always O-ring the block or head as well.

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