Late 30’s seaking

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  • tinkerman
    tinkerman

    US Member - 1 Year
    Replies: 159
    Topics: 26
    #207217

    I’ve got this late 30’s sea king about finished and I’m wanting to put new decals on. The site says specify hp but I’m not sure. Serial # is 101838 but nothing in the old outboard book about serial #’s and sea kings. In the price guide section it mentions a midget single cylinder with the chipmunk spark plugs covers but mine is a twin . I have another seaking twin a year or two newer and part of the decal is legible and reads 3 HP but it looks a little bigger than the one I’m questioning. Any help is appreciated and y’all have already answered a couple questions about this motor and it now starts and runs

    IMG_20200630_2017066612

    It's a jungle out there.

    • This topic was modified 1 week, 4 days ago by MumblesMumbles.
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    Buccaneer
    Buccaneer

    US Member - 1 Year
    Replies: 3938
    Topics: 971
    #207224

    I don’t know what model, but it’s a neat looking motor. I looked through jpegs of ads I’ve saved over the years,
    and don’t see one like it. I wonder “who” made this motor for Sea King in this era?

    Prepare to be boarded!

    tinkerman
    tinkerman

    US Member - 1 Year
    Replies: 159
    Topics: 26
    #207225

    I was thinking Evinrude because aside from the spark plugs covers (and the sea king shaped tank) it resembles a handitwin I’ve got from the same era. I’ve found a couple of random charts online but they say late 30’s was a 3 HP Evinrude built twin and a 5 HP Evinrude built twin. If the decal is correct on the other one I have then this mystery one is LESS than 3 HP, simply because it has smaller heads and exhaust than the 3 HP I’ve got. Somebody will know, I think. There’s guys on here that are a lot more knowledgeable than me on these old motors (thankfully)

    It's a jungle out there.

    Avatar
    nabmd

    US Member - 2 Years
    Replies: 61
    Topics: 4
    #207303

    page 263 of P Hunn’s The Old Outboard book shows Evinrude built Sea Kings; check both columns; there are listings for a 2.5HP model, bottom right column. Maybe that fits.

    Avatar
    green-thumbs

    US Member - 1 Year
    Replies: 400
    Topics: 38
    #207335

    If you go to Jason Baxter Wizard Outboard site and go to Tech you will find some date on the prewar Sea King outboards. I thing enough to pin
    down which twin model number you have. That may be useful in tracking
    down a decals.
    Good Luck
    Louis

    Edit Montgomery Ward Sea King brand outboards were made by Evinrude in1938 to 1942 prewar period, except for a price
    leader single made by Thor / Kiekhaefer.

    • This reply was modified 1 week, 5 days ago by Avatargreen-thumbs.
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    nabmd

    US Member - 2 Years
    Replies: 61
    Topics: 4
    #207349

    there may be a model # on a welsh plug in the left cylinder, behind the carb; you may have to take the gas tank and the carb off to find it; and it may be covered with grime, etc

    Avatar
    need2fish

    US Member - 2 Years
    Replies: 105
    Topics: 10
    #207353

    I have the identical motor — it has no stamped serial number anywhere…. just casting #s. Welch plugs are blank.

    It’s a derivative of the Evinrude sportsman (2.5hp – 3.3hp)…. the opposed twin motor with the “cheeks”.

    Like most small evinrudes of the era, the skeg on those motors is extremely fragile.

    It’s got Evinrude’s poppet valve drown-it-to prime-it carb — very messy.

    It’s a sweet running motor — make sure the poppet valve moves up on inhale and returns to the seated position.

    Avatar
    need2fish

    US Member - 2 Years
    Replies: 105
    Topics: 10
    #207355

    P.S. the closest I got on identifying it was from Art Dekalb — he sold me a casting for the upper plate of the lower unit….. he said the model # probably had “EA” in it.

    …. maybe you can find an old MW catalogue on line.

    1 user thanked author for this post.
    tinkerman
    tinkerman

    US Member - 1 Year
    Replies: 159
    Topics: 26
    #207369

    Thanks for the replys, I’ll follow up on em.

    It's a jungle out there.

    tinkerman
    tinkerman

    US Member - 1 Year
    Replies: 159
    Topics: 26
    #207389

    Upon examination and studying Peter Hunns book more closely, I believe my sea king to be a 2-1/2 horsepower the engine block and heads are identical to a handitwin, which is 2-1/2 HP and their are a couple of 2-1/2’s listed in the old outboard book. It’s puzzling that their is NOT a serial number on some of these motors. I felt like all the numbers I found were casting numbers and the other gentleman that commented verified this. Anyway that’s what decals are going on it. Thanks for all the help. (Now if anyone’s got a plunger for the points for a 36 hannditwin and a Bosh coil I’d gladly pay fair price for it. I’m gonna post this in classifieds

    It's a jungle out there.

    fifty20ne
    fifty20ne

    US Member - 1 Year
    Replies: 344
    Topics: 637
    fifty20ne
    fifty20ne

    US Member - 1 Year
    Replies: 344
    Topics: 637
    #207435

    http://www.discount-marine-parts.com/ob_sea_king_1.html

    8642787

    Arena20201220102-XL

    Arena20201220218-XL

    Arena20201220219-XL

    • This reply was modified 1 week, 4 days ago by fifty20nefifty20ne.
    • This reply was modified 1 week, 4 days ago by fifty20nefifty20ne.
    • This reply was modified 1 week, 4 days ago by fifty20nefifty20ne.
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    fifty20ne
    fifty20ne

    US Member - 1 Year
    Replies: 344
    Topics: 637
    #207443

    From JULY 1997 AO

    sk.01-1

    sk.02-1

    sk.03-1

    19392

    • This reply was modified 1 week, 4 days ago by fifty20nefifty20ne.
    • This reply was modified 1 week, 4 days ago by fifty20nefifty20ne.
    • This reply was modified 1 week, 4 days ago by fifty20nefifty20ne.
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    tinkerman
    tinkerman

    US Member - 1 Year
    Replies: 159
    Topics: 26
    #207470

    Great info!! Thanks a lot according to the MW ad I believe I was right 2-1/2 HP I guess I could weigh it according to the ad and if it’s 29 lbs we are spot on

    It's a jungle out there.

    Mumbles
    Mumbles

    Canada Member - 2 Years
    Replies: 4506
    Topics: 432
    #207476

    You will have to remove the front cover but there is a small brass welch plug on the front of the motor with ID numbers on it. It’s either on the crankcase or on one of the cylinders. These numbers will correspond to an Evinrude model listing.

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