Yamaha 115 on a CD 22?

C

CHardy

New member
comments? recommendations? performance?

I am new here and am buying a CD 22 this winter. Would like some advice from all on the best power available today...

thanks so much!

Chris
 
They're all good at this point. I can hit 36 mph with my Merc 90 and a full load (everything to live, 4 scuba tanks, a hookah rig, spare engine) so 115 ought to be plenty. Most of us are usually running 16-22, you'll have plenty of power with that.
 
I don't know about new CD-22s, but older ones are only rated to 100hp. So, if that's the case,
no rep. dealer will install a 115hp. Plus, I think it's illegal to run such a boat.

Mike

P.S.

I checked the C-Dory website, and it says "100 hp", but of course the website
could just be outdated.
 
Code of Federal Regulations Title 33, part 183 specifies that a boat under 20 feet in length have a capacity plate--this includes an outboard motor HP capacity, if an outboard is to be fitted.

I suspect that any law enforcement officer could deem a boat manifestly unsafe if it is overloaded or has too large a motor, this seems to be rarely enforced.

The C Dory 22 is over 20 feet and does not fall under these regulations. However each manufacture sets a size of motor based on transom design, materials and hull design. One could get in problems with their insurance company if these were exceeded. Also there would be a legal issue if an injury or damage occured because of too large a motor.

I believe that the origional C Dory 22's were rated for 90 hp, then 100, and I have seen some with 115. I understand that the factory will not certify an older boat for a larger motor than it was designed for at the build time.

Many people put larger motors on their boats--and for the most part get away with it--but, the C Dory is a type of hull which does not lend to high speeds. I felt that our C Dory 22, with a 90 hp was near its upper limit in the low 30's--the steering becomes skitterish at ligher speeds and not as positive. Some of the older boats may really not have the transom strength to take the higher hp or weight of the newer motors.

I have a 115 Yahama on a 18 foot CC Century--and it is a great engine. I really like the Suzuki's on the Tom Cat. Biggest probelm is that you cannot hear them at an idle. When fueling up, the gas dock attendant told me to be sure and start my engines, as I was shoving off--they had been running for about a minute and he could not hear them. I agree all of the engines are good in todays world. But decide if there is really a reason for more than 90 hp. The 90 hp will push the boat into the 30's even with a load for two weeks of cruising--and that is as fast as you need to go in this boat.
 
thanks for the thoughtful reply!

I was just curious to hear from someone that has put a 115 on a 22, and their comments as well.

Anyone?

Chris
 
The C-dory website still shows max HP at 100. Their website doesn't get updated very often, so there may have been a change.

Suzuki's 115HP is the same engine as their 90HP. Same weight, just tuned up.

Honda's 115HP is a significantly larger engine than their 90HP.
 
CDory has upped the Maximum HP to a 115 rating. Haven't changed the plates yet. But they put a Suzuki 115 on my 22 And I love it. Wouldn't want any less. I also get to about 36-37mph wide open. Lots of power in the lower rpms too.

Sark
 
I went through the same dilema with repowering my 22 c-dory i bought the 90 suzuki great motor it will tach out at 5800 rpm with a 14/18pitch prop .top end about 34 mph with full gas and gear 1person with full load and 4 people 32 mph plenty of power for me . the suzuki throws a bigger prop .

I owned a f115 yamaha on a deck boat that I thought about putting on the c-dory the suzi has more grunt ,bigger prop and much better response .

It really depends where you live what conditions you will run your boat in .
The ocean and gulf of mexico, you will not be running at full rpm anyway Good luck in your decision the 90 is plenty
 
Others will disagree but here is my situation/experience.

Go for the 115. You will have the speed if and when you need it. If you don't need it don't push the throttle so far down. You can load the boat down with gear and still have good economy/performance. Your engine won't work hard as you will have more available power at a lower rpm. I often dream of having a 115.

I have the F80, which is the detuned version of the old F100. (now the F90) So I am disadvantaged from the start. I am carrying the weight of a 100 h.p. but can't get 80 H.P. at best. The boat can easily carry a huge amount of gear so why not match the power to the boats capability so performance when loaded heavy doesn't suffer?

The 115 will provide performance in all conditions with all loads. In my case (always heavy for beach camping, always overnight trips) as the engine manual states: the F80 will produce 80 h.p. at 6000 rpm. I have a 15 pitch prop that will spin 5200 rpm wot. I need to drop to a 14 pitch for higher rpm's but they are rare. A 13 pitch would kill any speed I now have which is mediocre. As you can see I can not get even 80 h.p. because I can't reach 6000rpm. Now drop off another 1000 rpm from wot (5200 - 1000 = 4200rpm in my case) for continuous cruise rpm to save wear on the engine and what do you have? Maybe 55 available h.p.? So power is down as well as cruise speed. If I can find a 14 pitch prop then speed at all rpm will drop even more.

At full throttle loaded my top speed is 28 mph. The 115 would allow you to easily cruise at this speed with economy. We spend an awful lot of time at no-wake speeds looking at nature. The dory is no speed boat but what is wrong with zippin along when the water is smooth and you want to creat a breeze? Or when you want to take a long cruise on a short weekend and cover some distance? Or pull a tube or other water toy? The 115 makes it possible. When you go off shore in the rollers the 115 will shine also. With power to easily climb the swells.

I bought my boat used so I had to take it as is. My last center console was underpowered and the 80h.p. on my CD feels the same. It is the only disappointment I have with the boat. The 115 is a match for ALL the CD's cababilities. The 115 will shine in resale also. Try the 115. Lower power makes the CD a cruiser. The 115 will make the CD an express cruiser. If you are not fully satisfied I will gladly trade engines!
 
A-men C-Weed. I have a CD22 with a Honda 75. While it's a good motor, I do 28 @ WOT, going with the tide and under optimal conditions. So, I've just learned to lower my expectations as far as speed goes.
 
Red Fox runs a 115 Yamaha and has kind things to say about it. Its solid engine but not cheap.......so what is?

Have not read much from him lately but I think he still runs it on a older 22.

Good luck and have fun picking.

Chris Bulovsky
Washburn Wi
 
One size just doesn't fit all! The 115 Yami is obviously a great engine or RF wouldn't have it, and I've never read a downer on it. My 100 Yami is excellent but too much engine IMO for the 22. I've had 22 CD's with 70, 75, 90 and 100 hp and they all work for me. I don't want or need the speed in our NW water, so a 70 or 75 is ample. I cruise comfortably at 18 or 20 knots with 75 HP, and NEVER run at top speed. Some of our PNW logs are as big as the 22 and don't want them in the cockpit with me.

If you can't get rated rpm with your engine you have a problem. Either too much prop or a mechanical or fuel problem of some sort. 75 hp will give my 22 about 30 top end - Tom gets 36 with his 115. We are both happy campers, and both complain about the lousy salmon season :thdown :thdown.

Just an aside, Larry H has thousands of miles on his 70 2-stroke on a HEAVY boat. Works for him...

Dusty
 
In re-reading the thread, I noted that prop pitch was mentioned. On our CD 22, we had three props--I believe that they were 13" (for over 7,000 feet) 15" (for over 3500 feet) and 17" (for sea level). So if you are doing a lot of traveling, you might consider a second or third set of props to give the best engine loading for the conditions.

I am not sure how much difference it makes in the outboards, but in diesels and inboards I always try and pitch my props so I get close to rated WOT--and avoid lugging the engine. Porbably not going to happen much on the C Dory, because the boat comes up on a semiplane/plane very easily with minimal HP.

I have a loaner set of 4 blade 19" props I am going to try on the Tom Cat 255 (normally running 21" pitch). But there isn't anything over 300 feet high within a decent distance of Pensacola!
 
I forgot to mention my suzuki is a 2litre with plenty of torque and low end grunt she will tach out at 5800rpm and going 33-34mph .the 90 suzuki is a detuned 115 .If you go with older honda or yamaha i would agree with c-weed the f115 is the wy to go but with suzuki save the $800 bucks and invest it in the c-dory thats my story and im stickin with it .
 
Interesting comment from Eagle Craft Boats in BC --

"p.s. We use alot of Yamaha's but stay away from the 115's the 200's and 250's are excellent motors with no problems reported so far."

Dusty
 
Back
Top