12 sea King

[rbonnell1]

I got a 1963 sea King how big of a motor can it take

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[srd]

Mine is rated for a 10hp.

[rbonnell1]

Thank you the plate is gone from mine

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[lakebound88]

My 12 seal king was rated for 10 as well.. but remember 10hp 2 strokes of its era...

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[rbonnell1]

Yeah they were a lot lighter than than the outboards of today

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[rolmops]

It's not so much the weight of the outboard that matters. The 1963 outboards had their HP capacity measured at the engine. Today's engines have their strength measured at the propeller.(since 1983)

The power loss between propeller and engine is about 10 to 15 %. So yesteryear's 10 horse is today's 8.5. That means that a new 10 horse is a bit too much power for that boat.