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Antique Marine Engines and Outboard Motors Discussion on old marine engines, naptha, gas, oil or steam and vintage outboard motors.

Antique Marine Engines and Outboard Motors

Old Johnson & Neptune Motors, Years Built?


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Old 06-27-2019, 09:40:23 AM
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Jim Martin Jim Martin is offline
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Default Old Johnson & Neptune Motors, Years Built?

I picked up these 2 old boat motors the other day and was wondering if anyone could date them? I was told possibly the Neptune model 106 is a 1927 but not sure.
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Old 06-27-2019, 09:08:54 PM
cherob cherob is offline
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Default Re: Old Johnson & Neptune Motors, Years Built?

My Johnson chart shows 1929 engines manufactured from serial number 96409 to serial 128000. Your engine fits between these numbers. The J prefix I would guess indicates that it is a single cylinder 11/2 Hp
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Old 06-27-2019, 11:09:12 PM
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Default Re: Old Johnson & Neptune Motors, Years Built?

my buddy had a Neptune 1 and a half hp many years ago, that little bugger always ran....nice find.....
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