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Yamaha vs Suzuki vs Mercury 300ís

Old 06-23-2019, 07:25 AM
  #121  
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Originally Posted by THE BARRACUDA View Post
Ole good Morning. Sorry I'm confused on this one. The rotor/Flywheel? Needs to be changed every 80 hours on the F300 or F350? I don't understanding ?? I know you more about this than anyone on here.
The V8 F300 and F350 use what Yamaha calls a "rotor assembly". A combination flywheel/electrical rotor/harmonic crank shaft damper.

Every 80 hours of engine run time within a certain RPM range the rotor assembly is replaced. Free of charge. Not a big deal. Remove six bolts. Remove the old rotor. Install new rotor. Install and torque six bolts.

It would appear that running the motor within the RPM band Ole mentions is wearing the component out faster than is desired. If it wears out it fails to do its job. Therefore, it is replaced periodically to ensure the motor is adequately protected.

Stay out of the RPM range and the rotor never needs to be replaced. Otherwise in typical usage it is replaced every several years as Ole the Great indicates.

The Yamaha rotor becomes what is referred to as a "life limited' part. Very common in aviation. Think helicoptor rotor blades. They have a finite life. Replace them every XYZ hours. Also, parts within some gas turbines are life limited. Just the way that life is.
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Last edited by alloyboy; 06-23-2019 at 07:35 AM.
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Old 06-23-2019, 07:48 AM
  #122  
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For $21K you can get a 30" Yamaha 225, or a 300 Suzuki or Evinrude for the same dough.
Suzuki and Evinrude offer 6-10 warranties, + re-power incentives like Evinrudes power steering.
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Old 06-23-2019, 07:54 AM
  #123  
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Originally Posted by alloyboy View Post
The V8 F300 and F350 use what Yamaha calls a "rotor assembly". A combination flywheel/electrical rotor/harmonic crank shaft damper.

Every 80 hours of engine run time within a certain RPM range the rotor assembly is replaced. Free of charge. Not a big deal. Remove six bolts. Remove the old rotor. Install new rotor. Install and torque six bolts.

It would appear that running the motor within the RPM band Ole mentions is wearing the component out faster than is desired. If it wears out it fails to do its job. Therefore, it is replaced periodically to ensure the motor is adequately protected.

Stay out of the RPM range and the rotor never needs to be replaced. Otherwise in typical usage it is replaced every several years as Ole the Great indicates.

The Yamaha rotor becomes what is referred to as a "life limited' part. Very common in aviation. Think helicoptor rotor blades. They have a finite life. Replace them every XYZ hours. Also, parts within some gas turbines are life limited. Just the way that life is.
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^^^^^^What he said.^^^^^^^
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Old 06-23-2019, 11:25 AM
  #124  
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Oh boy, now that all the comments got you confused, some true some personal experiences, I can give you my 2 cents. Had twin Yamahas on one boat and one was nothing but different problems the other good, had twin opti mercs same issue one good the other not so good. Have twin etec 300 and have not done a thing to them in four years. The point is do your research, boating magazine had a comparison. Check all aspects, dealers, warrantee, price, then flip a coin if confused. You can always luck out or not. Good luck.
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Old 06-23-2019, 02:26 PM
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And this Harmonic Damper in the flywheel, is this part also in the V6 F300 or only involves the V8??
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Old 06-23-2019, 02:53 PM
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Originally Posted by THE BARRACUDA View Post
And this Harmonic Damper in the flywheel, is this part also in the V6 F300 or only involves the V8??
Only the V-8
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Old 06-23-2019, 03:06 PM
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Originally Posted by THE BARRACUDA View Post
And this Harmonic Damper in the flywheel, is this part also in the V6 F300 or only involves the V8??
"The V8 F300 and F350 use what Yamaha calls a "rotor assembly"."

Nothing was said about the V6 F300.
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Old 06-23-2019, 08:29 PM
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The f300 is a v6
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Old 06-23-2019, 08:44 PM
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Fake news. Yamaha makes a 300V6 and 300 V8. V8 300 and 350 have the same issues.
Originally Posted by Cove bug View Post
The f300 is a v6
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Old 06-24-2019, 04:31 AM
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Originally Posted by Cove bug View Post
The f300 is a v6
There was a F300 V8 at one point
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Old 06-24-2019, 12:16 PM
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Originally Posted by Bullshipper View Post
For $21K you can get a 30" Yamaha 225, or a 300 Suzuki or Evinrude for the same dough.
Suzuki and Evinrude offer 6-10 warranties, + re-power incentives like Evinrudes power steering.
You can get the F300 for $21k. You can get the SHO for $18.5 or so which is essentially the F300 but mechanical.
https://www.boats.net/catalog/access...e/yamaha/300hp


and I've never heard of the Evinrude's being any cheaper. Looks to be about the same. You are paying for the extra warranty.
https://www.boats.net/catalog/access...evinrude/300hp

Suzuki is cheaper. 3 years standard + 3 years Extended protection. Yamaha offers 5 and you can always extend if you want to.

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Old 06-24-2019, 12:23 PM
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Originally Posted by davepjr71 View Post
You can get the F300 for $21k. You can get the SHO for $18.5 or so which is essentially the F300 but mechanical.
https://www.boats.net/catalog/access...e/yamaha/300hp


and I've never heard of the Evinrude's being any cheaper. Looks to be about the same. You are paying for the extra warranty.
https://www.boats.net/catalog/access...evinrude/300hp

Suzuki is cheaper. 3 years standard + 3 years Extended protection. Yamaha offers 5 and you can always extend if you want to.
wish I could find an f300 for 21. Best I can find is 23,400 and thatís before the riggin!
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Old 06-24-2019, 12:32 PM
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Originally Posted by Tossedabout View Post


wish I could find an f300 for 21. Best I can find is 23,400 and thatís before the riggin!
---


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Old 06-24-2019, 03:43 PM
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Originally Posted by Parker Yacht View Post
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Ole are those prices including the lower units with and installed on the Motor?? I'm seeing many areas where the lower units are separated now.
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Old 06-24-2019, 03:58 PM
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Originally Posted by THE BARRACUDA View Post
Ole are those prices including the lower units with and installed on the Motor?? I'm seeing many areas where the lower units are separated now.
Those models, by definition, come with lower units.

There are different model identities used when the lower unit is provided separately.
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Last edited by alloyboy; 06-24-2019 at 04:06 PM.
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Old 06-24-2019, 03:59 PM
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Originally Posted by Cove bug View Post
The f300 is a v6
Some are. Some aren't.

Welcome to THT. Better be careful when posting information here. Some one, some where, is going to spot a faux pas.

Actually, there is so much misinformation or fake news here you may fit right in.
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Old 06-25-2019, 02:41 AM
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Originally Posted by THE BARRACUDA View Post
Ole are those prices including the lower units with and installed on the Motor?? I'm seeing many areas where the lower units are separated now.
Originally Posted by alloyboy View Post
Those models, by definition, come with lower units.

There are different model identities used when the lower unit is provided separately.
The DownUnder Wonder is correct, again.
An F300XCA or an F300UCA has the lowers, 25" and 30" respectifully.
An F300NCA does not, and that gives the dealer or OEM the option of making that one powerhead, a 25" engine, left or right, a 30" engine, left or right and a 35' engine, left or right.
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Old 06-25-2019, 05:30 AM
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Originally Posted by alloyboy View Post
Some are. Some aren't.

Welcome to THT. Better be careful when posting information here. Some one, some where, is going to spot a faux pas.

Actually, there is so much misinformation or fake news here you may fit right in.
yup... so true it actually applies to you..
specially when it comes to that brand... you know? the one you always post against, saying it has no sales, no market share, and "buys" transoms (even though said transoms are owned by the engine builder)...
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Old 06-25-2019, 06:08 AM
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Originally Posted by Parker Yacht View Post
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Thanks for this timely information Ole
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Old 06-25-2019, 07:12 AM
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Originally Posted by combi_40 View Post
yup... so true it actually applies to you..
specially when it comes to that brand... you know? the one you always post against, saying it has no sales, no market share, and "buys" transoms (even though said transoms are owned by the engine builder)...
Did I say no sales? That is fake news. Misinformation. I meant low sales. Unless one thinks that less than 10% of the total market does not qualify as being low sales. In which case I am again providing misinformation. Been watching too much CNN I suppose.

The essence of buying a transom is to buy the boat company. Buy the boat company and the transoms come with it.

A motor maker selling to a boat builder that wants ones products exclusively does not rise to the level of buying a transom. IMO. Could be wrong. Again.
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