22 FT Tournament

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jok

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My brother in law has a 22ft Tournament with a 250hp outboard on a bracket. Just below plaining speed the bottem of the motor is in the water. The dealer told him that he should not ride at that speed. He should go faster or slower. I think this is bad design. Any thoughts? :(
 
Mine does the same thing with a 225, and has never been a problem. Bad design? It is what it is. If it's a problem for your Bro, tell him to power thru the problem area ... and never look back when rapidly coming off plane! :shock:
 
The first thing that comes to mind is, what is the motor's shaft length? I had an older Grady Offshore with a 20" Sea Drive.... did the same thing.

If it's a 25 inch, (and it should be) is it mounted too low? Trim the engine straight down and look at where the anti-cavitation plate is, with respect to the keel. It should be around 1 to 1 1/2 inch's below the keel. If it's lower, you should be able to raise it, (check out the bolt pattern on the motor bracket).

Are you trimming the engine down? It's usually a good idea to trim all the way down when your getting up on plane. It helps to keep the bow down. You can trim out, once your up and running.

Last thing, do you have trim tabs? If you do, extend them fully before jumping on plane. They'll lift the hull and help to keep the boat level. You can back them off, after your on plane, (same as engine trim).
If you don't have them... get them! Imo, they're an absolute necessity.
 
Hello to all, this is my first post here. I would like to hear from other 225 owners concerning this subject. I was about to jump off on a purchase of a new one, but noticed the same situation when idling out of the harbor for a test. Water was coming up on the front and sides of the Yamaha 250, and actually was throwing a little water near the top of the engine. It did track cleanly at higher speeds. I checked with the factory and they acted like they've never heard of this problem. I had the salesman check with other owners of this boat to verify the correct bolt holes were used and they were the same.

REALLY love this boat, but we do have to idle in and out of home base & not happy with the salt water bath of the engine. Any other observations or suggestions PLEASE...
 
Trim the engine straight down and look at where the anti-cavitation plate is, with respect to the keel. It should be around 1 to 1 1/2 inch's below the keel.

Uh, rule of thumb I always heard is at or slightly above the keel for a transom mounted motor. Another RoT for brackets is an inch or so higher than the keel for every foot beyond the transom ... :wink: [/i]
 
Curmudgeon said:
Trim the engine straight down and look at where the anti-cavitation plate is, with respect to the keel. It should be around 1 to 1 1/2 inch's below the keel.

Uh, rule of thumb I always heard is at or slightly above the keel for a transom mounted motor. Another RoT for brackets is an inch or so higher than the keel for every foot beyond the transom ... :wink: [/i]
Click to expand...

Your right, I meant to say, "above" the keel. Thanks.
 
jok said:
My brother in law has a 22ft Tournament with a 250hp outboard on a bracket. Just below plaining speed the bottem of the motor is in the water. The dealer told him that he should not ride at that speed. He should go faster or slower. I think this is bad design. Any thoughts? :(
Click to expand...
I'm not sure I understand what you mean by "the bottom of the motor". Are you referring to the lower unit or the bottom of the engine cowl? Most of these motors are installed by Grady White @ the factory so I'm sure they are installed at the right height. Have you called Customer service @ GW? They are very helpful and could probably explain whatever question you have. I would be interested in what they had to say about this.
 
Yamaha seals the cowl very well.
The engine will be lower relative to the seas with a bracket than with engine on transom when the stern dips on a hole shot. If you are staying on this off planning speed with any boat, use the tabs to lift the stern up, more economical ride too. The boat will be easier to stand on and see out the windshield as well.

Does the water come from off the bracket in front of the engine? Or from the seas around the engine ?

If you are drifting at times of boat wakes, fast swells, or drift stern into a rip line, your engine's ass is going to take water above the cowl seal line.

My old Johnnies had crappy cowl seals, the block had a high water line on it well above the cowl seal. I did have electrical failures with the Johnnies, never found a drop inside my Yammies.

Did I mention to be sure the cowl clamp down brackets are secured properly ?
 
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