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    Mockofish777's Avatar
    Mockofish777 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 12, 2016, 08:50 AM
    Mercury Outboard Engines
    Have 25 hp ES 2 stroke Outboard Engine, Belgian Made, 2004
    It has blown.
    Have seen a 20 hp similar outboard engine 2000, I am told that this engine is identical to mine
    Save a bigger Carburetor which makes it 25 hp.

    Question would carburettor and electrics from 25 hp upgrade the 20 hp ?
    cdad's Avatar
    cdad Posts: 12,700, Reputation: 1438
    Internet Research Expert
    		  
    #2

    Jul 12, 2016, 02:14 PM
    It is doubtful. Horsepower is achieve by more then just a few parts on the outside. It may help the smaller engine or it may overwhelm it.
    kelmark2590's Avatar
    kelmark2590 Posts: 4, Reputation: 1
    New Member
    		  
    #3

    Dec 31, 2016, 09:23 AM
    The best way to check this is to go to a Mercury parts diagram. Look up both engines by the serial number. You can find the diagrams here Parts Diagrams Application Charts Yamaha Mercury Johnson Evinrude Mercruiser Seadoo - PartsPak.com
    Compare both sets of engine parts and then decide if the majority of the parts (ie engine block, etc) are the same.
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