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    Mercury I6 Powerhead ID

    Just an inch or two below the welsh plug on crankcase
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    Mercury I6 Powerhead ID

    8311 on the block so looks like a 90hp. Got hosed on this one, live and learn I guess
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    Mercury I6 Powerhead ID

    Yes I checked there first. Confirms that the lower unit is a ‘78 and power head is an ‘85 (not an ‘86). How to decipher power rating of the power head though? Serial number on welsh plug means is could be an ‘85 115hp or ‘85 90hp. Maybe I’m missing something
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    Mercury I6 Powerhead ID

    Recently purchased a boat w/ a claimed '78 90hp mercury lower unit and a '86 115hp mercury powerhead. I am attempting to confirm what powerhead it is. Welsh plug on block shows A149297. Intake stamp is 9718435. Serial no. on transom mount is 5034059. Any help would be greatly appreciated...
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