Verado 300 on a 225 osprey

[collie]

I am looking at putting a 300 verado on a 1994 225 osprey Is this outboard to heavy for this boat?

[captben31]

You'll destroy the transom very quickly with stress cracks, and 300hp is somewhat dangerous also. Take a step back and go with a 225 or 250. Your boat will thank you for it and it won't be so thirsty either.

[seabob4]

You'll destroy the transom very quickly with stress cracks, and 300hp is somewhat dangerous also. Take a step back and go with a 225 or 250. Your boat will thank you for it and it won't be so thirsty either.

The '94 225 Osprey was rated for 300 HP in the form of twin 150s, whether they be OMC OceanRunners/OceanPros, Merc carbed models, or Yamaha OX66s.  The combined weight of any of these combinations was over 900 lbs.  The 300 V-rod weighs 662 lbs.

You're good to go with the 300 Verado.  Keep in mind, should you choose that route, she'll need 93 Octane minimum gas, hard to find at marinas...

[captben31]

Being as it may in regards to the HP rating , I still wouldn't put a 300HP OB on the back of a 22ft Aquasport. Aquasport transoms are prone to cracking when you max out the HP rating of the hull using a single OB. The reason why (2) Counter-Rotating 150's isn't a problem is because the torque is distributed more evenly across the transom instead of a single point and the twist from the torque. Plus, the drag of the two engines keeps the boat at a lower top speed (which isn't such a bad thing in this case).

I personally believe this is too dangerous. A 300 verado has too much torque.

In a best case scenario it will shorten the life of the hull considerably. It's not worth it.

A 225 Verado, Yami, Honda, or Suzuki will give him 45-50 mph at WOT easily and safely. Anything more than that is rediculous. Aquasports were not designed to be rocket fast boats.

[flkeysaqua]

Let me voice my opinion this way my friend has a 25' Fountain with a 275 Verado while its not an Aquasport the stern on his boat is fricken heavy he has to use full tabs to launch unless he wants the boat to go to 12 o'clock the other downside besides 33 gallons at wot  is even with full tabs he has to be in at least 4 foot of water to plane I'm sorry in my book thats crazy and would get old for me I know he is aswell.  Just my opinion

[GoneFission]

I would be cautious of the 300 Verado.  It's basically the same block as the 250 and 275 - it gets more HP by upping the supercharger boost - which requires premium gas.  You void the warranty (and maybe the engine!) if you don't run premium fuel.  Many marinas don't have premium - those that do may charge some pretty high prices for it.     If you use regular, the engine has knock sensors that retard timing and injection if a knock is detected, cutting power back drammatically.  

The inline 6 Verado is a smooth, quiet engine.  But Mercury took the easy way to more HP in the 300 with boost and premium - not the user-friendly way.  

I would price the Verado against the Optimax - the gas consumption numbers are not very different for similar HP, but the prices seem much different.   Look at the 250 HP models and I think you will like what you see.  The 300 is more of a sales gimmick IMHO...  

[collie]

Thank you to every one for the info I am also looking at a yamaha ox66 250.I am not looking for speed just want to get more power to push the boat over the boat over the waves in the gulf of Mexico I have a Johnson 225 on it right now and it is working hard to push it loaded with fuel and 5 persons

[LilRichard]

How about a 'Zuke 300?  I have heard nothing but good things about them - and I have a 150 and can attest to its quality.

[captben31]

LilRich - It's not the brand of the engine that is the problem, it was the H.P.

Collie - The Yamaha OX66 is a fine choice, just make sure you use Yamalube for the oil and put Yamaha "Ring-free" in your gas. If you do not do either, you will have serious problems down the line. If you follow Yahamas service manual and recommendations, the engine will last forever.

[GoneFission]

Are you sure your 225 is running right?  A 225 should push your boat right along!  Propped right, I would estimate a top speed right about 50 with a good-running 225 on a 225 Osprey.  

If you're going with a Merc, you are right to go with the 3.0 litre over the 2.5 - big difference there.  A freind of mine had a 200 with the 2.5 litre, then moved up to the 3.0 litre 225.  As the saying goes, "there's no replacement for displacement."  His new 3.0 litre 225 required he go up 2 pitch sizes with the prop.  It was a lot more than 25 HP difference...  

See ya on the water!

[captben31]

Any small boat with a proper rated engine on the back will have problems pushing 5 people and a full tank, along with all of the other equipment. When I mean problems, I mean getting up on plane as fast as you normally would and you may lose 3-5 mph on your top end. Another issue may also be your prop. Check the prop and make sure it's not out of pitch.

As I said before, the OX66 Yamaha 250 is a fine engine, but even then...loading it up with 5 people and a full tank will cut it's performance too. That's why the dual engine option does the boat justice. You have more initial thrust and evenly across the transom. I understand that re-outfitting the boat with duals is extremely pricey, so go with the 250 single....again, just understand when you load a boat up that heavy, you will feel a difference regardless of the engine.