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Thread: Motor Swap

  1. #1

    Motor Swap

    Will a 2004 RXP SC short block work for an 2009 RXPX SC?


  2. #2
    Eastside Powersports Slow 91's Avatar
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    you will need to use the 04 electronics.

  3. #3
    Sanfish's Avatar
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    Since you said "short block" I assume you will be using the newer style head. The old 4tec blocks use a different oiling setup that will need to be converted to new style if you mix-match parts.

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  5. #4
    Yes I will be using 09 head. So there not interchangeable?

  6. #5
    ncdoo's Avatar
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    Yes, its the same block.

  7. #6
    INSANO's Avatar
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    They are interchangeable. For a 09 head to work with a 04 block you need to drill the oil restrictor out. Or run a 04 rocker arm shaft with the 09 head. There are some oil delivery changes made in 06.

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  9. #7
    INSANO's Avatar
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    Then you would have to rotate the reluctor wheel counter clockwise 2 bolt holes on the 04 crankshaft. Add a 12mm hole in the cylinder block by the CB shaft for 06+ pcv. I have swapped a 04 rxp short block onto a 08 rxpx. Everything you need to know is here on this awesome forum.

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  11. #8
    But if I had an 2006 block that will work with my 09 Head correct?

  12. #9
    INSANO's Avatar
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    Yes sir. Good to install.

  13. #10
    INSANO's Avatar
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    You won't need to drill that 12mm CB vent hole either.

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