Seaway 23 inboard diesel?

wiggy

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Aug 26, 2012
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Carlisle PA, Chesapeake Bay
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Seaway 23
Just picked up a 1985 Seaway 23 (22' 6"?)without an engine. I was told that it had a Perkins 120 diesel in it. The running gear would seem to back up this idea but I'm not sure that it came from Oxford ME this way. It looks like the transom had some glass work and it could have had an outboard notch from what I can see in the replacement plywood. I got the boat at a really good price and I'm anxious to get started on the work for a spring launch. Anyone seen a diesel inboard Seaway? I've put a few pics in my folder.

http://downeastboatforum.com/members/wiggy-albums-seaway-project.html
 
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mainely boats

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Sep 7, 2011
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Walpole, Maine
Just picked up a 1985 Seaway 23 (22' 6"?)without an engine. I was told that it had a Perkins 120 diesel in it. The running gear would seem to back up this idea but I'm not sure that it came from Oxford ME this way. It looks like the transom had some glass work and it could have had an outboard notch from what I can see in the replacement plywood. I got the boat at a really good price and I'm anxious to get started on the work for a spring launch. Anyone seen a diesel inboard Seaway? I've put a few pics in my folder.

http://downeastboatforum.com/members/wiggy-albums-seaway-project.html

I think they might have come out of my molds but I'm not sure if it was laid up in Booth Bay Harbor or not. I like the diesel idea, what are you going to replace the power with?

23, lobster (9).JPG
 

wiggy

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Aug 26, 2012
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Location
Carlisle PA, Chesapeake Bay
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Seaway 23
Seaway Diesel

I'm thinking of a high output 4 cylinder. Of course, I wanna keep the weight down and the power up. Maybe a Cummins 4b in the 150hp range, a Yanmar would be great but they're typically pricey, I'd have to find a deal on one. Do you have any suggestions?
 

jojobee

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The 4cyl 4JH4-HTE 110 yanmar is about 550lbs with gear. Let me know if you need one. These are mechanical so you can work on them if you want to.
 

Wharf Rat

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City Island, NY
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OPB
I would look at the 4BY which comes in 150 or 180HP. It actually weighs the same as the 4JH with the gear, but considerably more power. The JH we put more or less in sailboats and launches, with the BY you can add trolling valves, it's NMEA2000 compatible, and is built on a BMW block. It's a higher reving engine than some of the older mechanical engines, but we've had a lot of success with the 4 and 6 cylinder models. The Norwalk show is next week, and Yanmar always throws out deals on their engines. PM me if interested and I'll put you in touch with Greg, head of the propulsion division at Precision Marine. We're Yanmar Gold PLUS dealers and Cummins Authorized as well. The Cummins are a little pricey, though.
http://www.yanmarmarine.com/theme/y...chnical-datasheets/PDF/4BY2-150 4BY2-180.pdf
 

djmarchand

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Jul 24, 2012
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Litchfield, CT / Punta Gorda, Fl
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Atlas Pompano 23 outboard
I would also take a hard look at the Volvo D3.

Also the Cummins 4BT is a bit heavy for a 23' boat and its vibrations might be uncomfortable in a light hull.

David
 
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