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2000 Cape Horn 24 repower with Single 300

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2000 Cape Horn 24 repower with Single 300

Old 09-13-2015, 04:33 PM
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Default 2000 Cape Horn 24 repower with Single 300

Hey guys,
I would like to get your thoughts. I'm running my CH 24 with an 225 OX66
And I think I've decided to do a repower to a single Yamaha f300. I reached out to the factory and they told me to buy a new boat! That that old boat could not handle the weight of four strokes and a single 300 has to much torque and it will lay the boat on its side. When I questioned him, disagreed about the weight seeing as my OX66 weighs in at 508lbs and the new Yamaha F300 comes in at 564lbs and people are running my boat with twin 2 Stroke 150's with a combined weight of over 800 lbs with that set up, he did not have an answer,he just got defensive. After that I didn't attempt to ask about the torque roiling. I'm just trying to figure out if there's something I'm not seeing. I'm a boat dealer in Ca and I have never had a company put down their own product line like that, I was a bit taken back. I know that new boat sales are a bit slow but Their only solution was for me to spend lots of $$$$$ for a new rig??? Is there something I'm missing here? Has anybody had any experience in running a big single in a CH24 with the old hull (1998-2005)? Thanks in advance for your help.
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Old 09-13-2015, 04:48 PM
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That does seem odd.
That hull is a beast. Even if they came back at you stating structural members or thicker transom needed to be added. It would still be cheaper than purchasing a new hull.
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Old 09-13-2015, 04:50 PM
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Seems like a real A$$hole answer from the Factory!If you are running the single now and go to another single that's only about a 100 lbs. heavier..I'd say it will be fine!
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Old 09-13-2015, 04:51 PM
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it will be a great combo w a single f300 !! imho
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Old 09-13-2015, 04:52 PM
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If you buy a new CH he sells a new CH... If you repower he sells nada... If he gives his blessing & it sucks he might be liable... He has nothing to lose by saying 'don't do it'

Last edited by Reel Stamas; 09-13-2015 at 05:09 PM.
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Old 09-13-2015, 04:54 PM
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put it on and send a pic to the db factory rep.
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Old 09-13-2015, 05:06 PM
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I have a 2003 ch24 with twin 200 hpdi's. I had also considered going to a single 300 when repower time came. I have spoken with 2 individuals directly who had a 24 with a single. One new hull with a Yamaha 350 and one 2005 hull which had twin 175 suzuki's and the guy repowered with a single suzuki 300. Both sold the boats because of the way the boat handled with big single engine. Not such an issue with the less torque of the 225/250, but the 300 and 350 have a lot of torque and spin big props. Both said that the hulls would lean hard starboard, required a lot of trim table to stabalize, and became more weight sensitive(had to be careful where people sat).

Not impossible to tolerate,but makes sense when going to a big single. Hope this helps.

The factory told me to buy a new boat as well and said putting new motors on an old hull would make no sense. I guess dropping $100,000 makes more sense to them.
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Old 09-13-2015, 05:15 PM
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I have a 2005 24os with twin Honda 150's. I LOVE the boat. As stated above it is a beast of a hull and I don't see why a single 300 wouldn't work great. I think it's rated for 400 hp and I've often wondered how twin 200's would perform. I say go for it.
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Old 09-13-2015, 05:18 PM
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Just saw the post above mine and that makes sense. Go with twins.
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Old 09-13-2015, 05:33 PM
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To convert a single to twins is a lot more money. Besides with only one fuel tank I really don't have any redundancy since the majority of engine problems is fuel related, these new outboards are super reliable. Besides the fact that with twins you have double the maintenance and repairs. That's great information from Peace of Mind, that gives me a big pause when getting ready to shell out 22k+. Maybe I should consider an F250 instead of the 300. I was just looking for a little more performance. Right now with the 225 ox66 I cruise at 28mph, 4600 rpms at 1.8 mpg. I max out about 35. I've heard that the 225 ox66 is a bit of a dog, that it has very poor heads on it that it really only makes 215hp (but very reliable!!). The ox66 250 was a much better performer as it was not detuned as the 225 was. Dual prop stern drives for IO's have been out for years, with these big singles you'd think that they would offer a dual prop to counter the torque.
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Old 09-13-2015, 05:40 PM
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The 250 is very strong. Maybe 2 or 3 mph difference cruise and WOT versus the 300. Same motor just different tuning.
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Old 09-13-2015, 05:43 PM
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Also the 300 Zuke runs a 16 inch diameter prop. The Yamaha is 15 1/4 generally. Different gear ratio to. The Zuke should have a little more low end torque with the higher gear and bigger prop.
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Old 09-13-2015, 05:48 PM
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It's my understanding the 250 & 300 are pretty much the same motor until you hit ~5K RPMs ?
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Old 09-13-2015, 05:51 PM
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So if that's true, their the same up to 5,000 rpms then I would have the same torque roll problems? Or do the 250's use a much smaller prop?
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Old 09-13-2015, 05:52 PM
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Not sure, but I think they turn similar/same diameter props & would guess torque would be similar...?
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Old 09-13-2015, 05:53 PM
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I owned a 19, and have ridden on several 24's.

I really like your idea of a single 300 and find the factory response, and the other discouraging answers on this thread BS.

The 24 is a heavy bow happy hull so putting more power and less weight back there instead of twins will only improve the ride and speed her up. Saying that the side torque will lay it out is utter Bull.

But I would look for a used 300 instead of new as the hull is old in terms of value. This is what the factory may have meant to come across.
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Old 09-14-2015, 08:58 AM
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Originally Posted by Bullshipper View Post
I owned a 19, and have ridden on several 24's.

I really like your idea of a single 300 and find the factory response, and the other discouraging answers on this thread BS.

The 24 is a heavy bow happy hull so putting more power and less weight back there instead of twins will only improve the ride and speed her up. Saying that the side torque will lay it out is utter Bull.

But I would look for a used 300 instead of new as the hull is old in terms of value. This is what the factory may have meant to come across.
I tend to agree with Bullshipper. I'm also kind of surprised at that response from Cape Horn.....do they just expect people to throw the hulls away when it comes time to repower?
Those hulls will last a lifetime if taken care of, I can't imagine buying a new hull just because the motor is old or has a lot of hours on it.

I have a 2005 Cape 21, it's rated for 300hp and if I wasn't getting ready to list it for sale I would be looking at putting a Zuke 300 on the back of it within the next few years. If mine sells I will probably be looking for a early/mid 2000's Cape 24 with either a big single or twins, and to be honest I would prefer a single 300. That is a big heavy hull, I can't imagine a single 300 having too much torque for it. Maybe run a 4 blade prop....give it some stern lift.

International Marine has some killer deals on Suzuki repowers right now. Single 300 Zuke with rigging, gauges, and prop for well under 20k. Great deal on twin 200's as well.
http://www.thehulltruth.com/fishing-...al-marine.html
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Old 09-14-2015, 12:21 PM
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I have an 04 21 Cape and i am considering a 300 zuke. There are dealers in the panhandle that are stocking new 21's and 22's with new single Yamaha 300's. I fail to believe it would be anything but an awesome setup with a single 300 on a 24.
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Old 09-14-2015, 02:25 PM
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Originally Posted by Bubba60tackle View Post
There are dealers in the panhandle that are stocking new 21's and 22's with new single Yamaha 300's.
Yup....there are several on boat trader.
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Old 09-14-2015, 04:31 PM
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Originally Posted by Bubba60tackle View Post
There are dealers in the panhandle that are stocking new 21's and 22's with new single Yamaha 300's.

The new boats are newly designed with 4 stroke weight and torque in mind.

Clearly, a boat built in 2000, like the OP's was not built with 4 strokes in mind. I tend to believe that at least in part, the factory is trying to warn the OP that the older hull and older hull design are not up to 300+ 4Stroke. Two reasonable consequences might well be transom damage, and bad torque twisting of the hull that can't be easily corrected by tabs.

It's the OP's money, but I would sure be reluctant if the factory discouraged it.
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