New Outboard for a CD 25

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Big E
Posts: 122
Joined: Sep 17th, '07, 14:08
Location: "Solstice" 1976 CD25
Salem, MA

New Outboard for a CD 25

Post by Big E »

I know this subject has been well covered in the past but perhaps someone has a fresh perspective?
Any replies appreciated.
pete faga
Posts: 492
Joined: Feb 26th, '05, 20:58
Location: CD25 Grace #66 Scituate Harbor Mass.

Re: New Outboard for a CD 25

Post by pete faga »

E
Whatever engine you decide try to find non ethanol gas from the start or learn how to take clean the carb
Pete
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Jdpmus
Posts: 80
Joined: Jun 17th, '10, 17:45
Location: Cape Dory 25, hull #169, Zephyr III, Grapevine, TX
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Re: New Outboard for a CD 25

Post by Jdpmus »

I'm considering a re-power also. From reading past entries, it seems that a Tohatsu 6 Sail Pro is the best candidate. However, I notice that they also make a 5 hp long shaft and am wondering how it will work. Presently I have a 20-year-old Johnson 6 and the way it is installed, it sits low enough to allow the lazarette cover to close completely. I'm wondering how to get the measurement from the top part of the mount to the top of the engine cover to see if it will fit.

Any suggestions are appreciated.
Ben Coombs
Posts: 112
Joined: Feb 8th, '11, 20:23
Location: 1973 CD 25 #37
King's Point, West Bath, ME

Re: New Outboard for a CD 25

Post by Ben Coombs »

I think the measurement is available on the tohatsu website. It fits nicely in our well, however a PO put in a weird outboard bracket that was meant to go up and down. So I remodified it to be a fixed mount similar to the original.

The sail pro is key... the high thrust prop gets you steerage very quickly in tight quarters. Also the motor swivels freely in ours, making any reversing situations very easy--I hold the tiller with my legs and use the motor to steer.

Great fuel economy. 30 miles on a calm sea takes less than 3 gallons.
Ben Coombs
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Jdpmus
Posts: 80
Joined: Jun 17th, '10, 17:45
Location: Cape Dory 25, hull #169, Zephyr III, Grapevine, TX
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Re: New Outboard for a CD 25

Post by Jdpmus »

Wow! I wouldn't have thought you could swivel ANY motor in that small space. Our 6hp Johnson fills up the well; you might can turn it an inch in either direction. Perhaps it is your bracket that makes the difference.

Thanks for the tip.
Ben Coombs
Posts: 112
Joined: Feb 8th, '11, 20:23
Location: 1973 CD 25 #37
King's Point, West Bath, ME

Re: New Outboard for a CD 25

Post by Ben Coombs »

swivel clearance would depend on your well design... ours is hull #37. No liner in the well.
Ben Coombs
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Jdpmus
Posts: 80
Joined: Jun 17th, '10, 17:45
Location: Cape Dory 25, hull #169, Zephyr III, Grapevine, TX
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Re: New Outboard for a CD 25

Post by Jdpmus »

Oh, now i see. Still, I will take your recommendation on the engine.
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Megunticook
Posts: 352
Joined: Sep 2nd, '12, 17:59
Location: Cape Dory Typhoon Senior #11

Re: New Outboard for a CD 25

Post by Megunticook »

I have a TySenior, but I think the well on that is very similar to the 25. The boat came with a 2008 Yamaha 4hp long shaft, and I've been very impressed with this motor--super reliable and very, very efficient with fuel (used less that 5g last season, the boat got lots of use). I did end up disassembling and cleaning the carb. mid-season due to a tendency to stall at idle, but that was a fuel issue I think, not the motor. Once I cleaned the carb. the thing idled beautifully.

Just my two cents.
Ben Coombs
Posts: 112
Joined: Feb 8th, '11, 20:23
Location: 1973 CD 25 #37
King's Point, West Bath, ME

Re: New Outboard for a CD 25

Post by Ben Coombs »

We have had a 4hp, an 8hp, and now the sail pro 6hp. Into a headwind and chop, the 4 was a little weak. The 8 was great for speed, but it was unmovable--literally bolted in place, the sail pro has been a great combination. It can maneuver well and the high thrust prop is great in tight low speed areas.

If you only need to get in and out of a slip, anything would likely work. But if you need to make any distance with the motor, I think a 4 would be too small. A 25 has to move 700 more pounds of water out if its way than a Ty senior.

1.5 knots doesn't seem like much difference, but over 20 nm it starts to add up. We can maintain 5.25-5.75 with the 6. Hull speed with the 8hp, and the four would push us around 4kts.
Ben Coombs
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