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C-Dory 25 Cruiser - Real World Engine Upgrade Options

 
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TenMile



Joined: 02 Jun 2025
Posts: 1
City/Region: Victora
State or Province: BC
PostPosted: Sun Jul 13, 2025 7:20 pm    Post subject: C-Dory 25 Cruiser - Real World Engine Upgrade Options Reply with quote

Hey all,

Brand new owner of a 2006 C-Dory 25 Cruiser that is currently powered by a 2006 Honda 150. While the current motor is running well, it is getting up there in age and given the type of crusing we want to do, we are considering a repower. Besides, there are no local Honda dealers close by at all, so servicing isn't clean and easy.

That said, I'm interested in understanding the differences in repower options. The local Suzuki dealer has some huge sales on the 140HP but I'm concerned with under-powering the boat. Interested in the performance differences at 150, 175 and 200Hp. While much of our time will be cruising, we do fish and "get there" so getting up on step is important as well.

Can anyone share their experience?
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colbysmith



Joined: 02 Oct 2011
Posts: 4976
City/Region: Madison
State or Province: WI
C-Dory Year: 2009
C-Dory Model: 25 Cruiser
Vessel Name: C-Traveler
Photos: C-Traveler and Midnight-Flyer
PostPosted: Sun Jul 13, 2025 7:32 pm    Post subject: Reply with quote

I've been quite happy with my Yamaha F150 four stroke EFI. That being said, if and when I repower, I think I'd like to stay with Yamaha so I don't have to change out all my digital gauges. Seems pretty easy to find Yamaha shops as well. And if a 175 existed, I might be interested. However I'm happy with my top speed (31mph) and fuel efficiency (5.0 mpg at hull speed, and around 2.0 on plane), so it would also matter what the weight of a new motor would be, along with it's fuel efficiency. I'll be watching this thread to see what others advise or suggest. Colby
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thataway



Joined: 02 Nov 2003
Posts: 21533
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
PostPosted: Sun Jul 13, 2025 7:39 pm    Post subject: Reply with quote

I would have gone to 200 hp, if I had repowered. Several have the 200 Yamaha 4 cyl and it works well. The Suzuki 140 (current model, is close to 140 hp, but the older ones were more like 130==and a 130 was underpowered on my first C Dory 25.

The 150-200 Suzuki is the same block (in 4 cyl), and weight is about the same.

I would up grade guages and other features with the newer engines. Many have two charging circuits, You may want to upgrade batteries and cables at the same time.

_________________
Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL
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srbaum



Joined: 30 Aug 2010
Posts: 912
City/Region: Portsmouth
State or Province: VA
C-Dory Year: 2007
C-Dory Model: 26 Venture
Vessel Name: Osprey
Photos: Osprey
PostPosted: Sun Jul 13, 2025 9:07 pm    Post subject: Reply with quote

TenMile,
If it were my boat and my money, I'd go with the 200. Same weight as the 150 and 175 and just a bit more $$$. This allows for when the boat is fully loaded for travel without compromise. It's not only a loaded boat to be concerned about with travel, it's also head wind and head seas.
PS, congratulations on your new boat, as you will find that you love it and can use it, no matter the weather, or time of year.

_________________
Steve Baum
Homeport of Portsmouth, VA
OSPREY (Ex Mister Sea) 2000 22 C-Dory 2010 - Sold 3/19
OSPREY (Ex ADITI) 2007 26 Cape Cruiser 2018
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Foggy



Joined: 01 Aug 2013
Posts: 1584
City/Region: Traverse City; Northern Lake Michigan
State or Province: MI
C-Dory Year: 2014
C-Dory Model: 26 Venture
Vessel Name: Boatless in Boating Paradise
Photos: W B Nod
PostPosted: Mon Jul 14, 2025 11:50 am    Post subject: Reply with quote

No go for the single Yamaha 200:
* 285 lbs (Add one child or small animal [45 lbs] and now you're equal total
weight with twins with fewer benefits)
* 3352 Cubic cm displacement

Go for twin Yamaha 100s:
* 165 x 2 = 330 lbs (granted, it's always stern weight)
* 3664 Cubic cm displacement (212 Cubic cm more equivalent to a Yamaha 8 hp)
* More prop area push for the hole shot and heavy load cruising
* Better slow speed control docking, less snaking slow underway

Of course, you're out more money for initial cost, maintenance and running but
the pleasure difference is priceless. Your choice.

Aye.

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I wasn't born at the lake but I got there as soon as I could.
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thataway



Joined: 02 Nov 2003
Posts: 21533
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
PostPosted: Mon Jul 14, 2025 1:13 pm    Post subject: Reply with quote

Foggy wrote:
No go for the single Yamaha 200:
* 285 lbs (Add one child or small animal [45 lbs] and now you're equal total
weight with twins with fewer benefits)
* 3352 Cubic cm displacement

Go for twin Yamaha 100s:
* 165 x 2 = 330 lbs (granted, it's always stern weight)
* 3664 Cubic cm displacement (212 Cubic cm more equivalent to a Yamaha 8 hp)
* More prop area push for the hole shot and heavy load cruising
* Better slow speed control docking, less snaking slow underway

Of course, you're out more money for initial cost, maintenance and running but
the pleasure difference is priceless. Your choice.

Aye.


The Suzuki's and Yamaha's 150 and 200 weight the same, as does the 150 Honda they are replacing: about 490 lbs. The Yamaha 100's are about 360 lbs: or 720 for the pair! No idea where Foggy got the weights of the motors he is suggesting. Perhaps he is confusing Kilograms for pounds???


Last edited by thataway on Mon Jul 14, 2025 1:21 pm; edited 2 times in total
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thataway



Joined: 02 Nov 2003
Posts: 21533
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
PostPosted: Mon Jul 14, 2025 1:18 pm    Post subject: Reply with quote

doubl post
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Foggy



Joined: 01 Aug 2013
Posts: 1584
City/Region: Traverse City; Northern Lake Michigan
State or Province: MI
C-Dory Year: 2014
C-Dory Model: 26 Venture
Vessel Name: Boatless in Boating Paradise
Photos: W B Nod
PostPosted: Mon Jul 14, 2025 3:09 pm    Post subject: Reply with quote

Whoops. Must of been that darn fecalith swirling around in my Circle of Willis...

My previous post about weight comparison, twin vs single, is incorrect.
Please disregard it.

Sorry about that.

Aye.
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thataway



Joined: 02 Nov 2003
Posts: 21533
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
PostPosted: Mon Jul 14, 2025 4:55 pm    Post subject: Reply with quote

Quote:
Whoops. Must of been that darn fecalith swirling around in my Circle of Willis...


I haven't heard that since Med School. It goes "Whamp, Whamp", Of course the treatment is I V Toilet Paper.
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