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  1. #1
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    Could someone give me some info mercury powerhead swap

    I have a 1999 200hp 3.0 mercury optimax with 215 hrs. I just lost number 6 cyl. I have a lead on a 2000 225hp fully dressed rebuilt powerhead. Can I take off my old one and bolt this one up without any modifications? I would appreciate any information. Thank you

  2. #2
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    Welcome Is 225 a 3.0 also? or 2.5 Promax?
    Rob Lankford

    1988 20' Action Marine 2.4 200

    Previous owned boats worth mentioning

    1976 17' Action Marine 2.4 200
    1984 20' Action Marine 2.5 200
    1983 17' Hydrostream V-King 2.4 Bridgeport
    2003 LPB STV RR COPY 2.5 280 /300 Drag
    2005 LPB STV RR COPY 2.5 280
    2005 Baja 23 Outlaw 6.2 Mercruiser
    2006 FTP Quarter Shot T3 Race 2.5 200 CARB/2.5 225 PROMAX
    2009 FTP Quarter Shot T3 Race 2.5 280




  3. #3
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    It's a 3.0 optimax

  4. #4
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  5. #5
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    I believe 3.0 to 3.0 should go together the same of that size and year being so close.
    Rob Lankford

    1988 20' Action Marine 2.4 200

    Previous owned boats worth mentioning

    1976 17' Action Marine 2.4 200
    1984 20' Action Marine 2.5 200
    1983 17' Hydrostream V-King 2.4 Bridgeport
    2003 LPB STV RR COPY 2.5 280 /300 Drag
    2005 LPB STV RR COPY 2.5 280
    2005 Baja 23 Outlaw 6.2 Mercruiser
    2006 FTP Quarter Shot T3 Race 2.5 200 CARB/2.5 225 PROMAX
    2009 FTP Quarter Shot T3 Race 2.5 280




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  7. #6
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    Ok thank you, I just know mercury did some crazy things in 99 so wanted to make sure.

  8. #7
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    No problem however im not sure rather fairly confident lol!!!
    Rob Lankford

    1988 20' Action Marine 2.4 200

    Previous owned boats worth mentioning

    1976 17' Action Marine 2.4 200
    1984 20' Action Marine 2.5 200
    1983 17' Hydrostream V-King 2.4 Bridgeport
    2003 LPB STV RR COPY 2.5 280 /300 Drag
    2005 LPB STV RR COPY 2.5 280
    2005 Baja 23 Outlaw 6.2 Mercruiser
    2006 FTP Quarter Shot T3 Race 2.5 200 CARB/2.5 225 PROMAX
    2009 FTP Quarter Shot T3 Race 2.5 280




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  10. #8
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    I think I posted this in the wrong area, new at this but I appreciate the reply.

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  12. #9
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    Quote Originally Posted by Hot Shot Merc View Post
    No problem however im not sure rather fairly confident lol!!!
    haha I understand that.

  13. #10
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    There may have been a crankshaft spline change around 2000??? Not sure.

  14. Thanks Derekhw84 thanked for this post

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