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Yamaha 4.2L V6 F300hp vs. Mercury Verado 4.6L V8 300hp

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Yamaha 4.2L V6 F300hp vs. Mercury Verado 4.6L V8 300hp

Old 04-20-2019, 03:36 PM
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Default Yamaha 4.2L V6 F300hp vs. Mercury Verado 4.6L V8 300hp

Just wanted to see if anyone has been on the same or similar boat with twin Yamaha 4.2L F300s and then the new Mercury Verado 4.6L 300s? If so, which one had the better top end speed and fuel efficiency at cruise? Please share your performance numbers and which motor you preferred.

I personally have been on a 32T Contender with twin Yamaha F300's for almost 1000hrs. The boat came out of the hole like a rocket with a nice cruise around 1.7mpg at 42mph and a light load top speed of 60mph. This was a 2010 32T Contender and not the 32ST model.

Thanks,
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Old 04-20-2019, 06:17 PM
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I'm curious as well. Would love to see how this new motor compares to a 10 year old "dinosaur".
I expect to see better holeshot with the added displacement/torque..
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Old 04-20-2019, 06:27 PM
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Had 30st with f300s.

Best motors i've ever run/owned...that's 30+ years and a LOT of motors.

They're popular and expensive for a reason.

Also much lighter than the verados and well you know when it comes to reliability and resale, the f300 has that in spades over anything in the category.
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Old 04-20-2019, 06:57 PM
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Originally Posted by paulyjsob View Post
I'm curious as well. Would love to see how this new motor compares to a 10 year old "dinosaur".
I expect to see better holeshot with the added displacement/torque..
"dinosaur".

Was around for a long time. I think they had something to do with fossil fuel. You know, the stuff that feeds dinosaur's.
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Old 04-20-2019, 07:19 PM
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Originally Posted by offtheline View Post
Had 30st with f300s.

Best motors i've ever run/owned...that's 30+ years and a LOT of motors.

They're popular and expensive for a reason.

Also much lighter than the verados and well you know when it comes to reliability and resale, the f300 has that in spades over anything in the category.
I feel the same way about the F300ís and never had a trip were I didnít return home due to mechanical failure. All around top notch motor.

However, the new Verado 300 4.6L is about 38lbs heavier than the F300, but it is lighter than the previous supercharged Verado by 68lbs. Time will tell how the new Verado V8 performs, but curious on its performance #ís vs. the F300 head to head.
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Old 04-20-2019, 07:40 PM
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Originally Posted by offtheline View Post
Had 30st with f300s.

Best motors i've ever run/owned...that's 30+ years and a LOT of motors.

They're popular and expensive for a reason.

Also much lighter than the verados and well you know when it comes to reliability and resale, the f300 has that in spades over anything in the category.
Only 30 pounds lighter per engine. The Vrods are V8's with more displacement.

The Mercs should out perform in everyway. The yamaha's were never the most efficient.
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Old 04-21-2019, 02:27 AM
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Originally Posted by captain28570 View Post
Only 30 pounds lighter per engine. The Vrods are V8's with more displacement.

The Mercs should out perform in everyway. The yamaha's were never the most efficient.
Not the most efficient as compared to what?
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Old 04-21-2019, 03:40 AM
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Originally Posted by Parker Yacht View Post
Not the most efficient as compared to what?
to new mercury's
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Old 04-21-2019, 03:43 AM
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Originally Posted by Egis View Post
to new mercury's
No, that was not what he was referring to.

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Old 04-21-2019, 04:06 AM
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Originally Posted by Parker Yacht View Post
No, that was not what he was referring to.
Then what was he referring to? Come on, you can say it. It won't hurt.
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Old 04-21-2019, 04:19 AM
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Originally Posted by Whaler27 View Post
Then what was he referring to? Come on, you can say it. It won't hurt.
I don't know, that's why I was asking.
But, he used passed tense, and it wasn't against the new Merc V8, because, honestly, where is a side by side comparison?
I swear though, between you and him, you must have "Subscribed" on every Yamaha word. No matter what you guys chime in, right or wrong.
I'm a Merc dealer and will defend when needed, same as I defend Yamaha when you guys take cheap shots.
And, truly, seriously, MPG, MPH, GPH, efficiency, speed, numbers, I mean, it's not like you are buying a car and driving it to work 100 miles each way. It's a boat, with 600-900 hp on the back, it's gonna burn fuel. Especially if you are cranking on it, doesn't matter whose brand it is.
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Old 04-21-2019, 04:36 AM
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Originally Posted by Parker Yacht View Post
I don't know, that's why I was asking.
But, he used passed tense, and it wasn't against the new Merc V8, because, honestly, where is a side by side comparison?
I swear though, between you and him, you must have "Subscribed" on every Yamaha word. No matter what you guys chime in, right or wrong.
I'm a Merc dealer and will defend when needed, same as I defend Yamaha when you guys take cheap shots.
And, truly, seriously, MPG, MPH, GPH, efficiency, speed, numbers, I mean, it's not like you are buying a car and driving it to work 100 miles each way. It's a boat, with 600-900 hp on the back, it's gonna burn fuel. Especially if you are cranking on it, doesn't matter whose brand it is.
There is a brand of outboard that has set the "gold standard" for fuel economy. Yamaha is not it.
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Old 04-21-2019, 04:40 AM
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​​​​​​​
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Old 04-21-2019, 04:49 AM
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Originally Posted by Whaler27 View Post
There is a brand of outboard that has set the "gold standard" for fuel economy. Yamaha is not it.
Originally Posted by davidwademarine View Post





​​​​​​​
Seriously?
Whatever..
You guys need a lesson in tack.
Professionalism.
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Old 04-21-2019, 05:00 AM
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Originally Posted by Parker Yacht View Post
Not the most efficient as compared to what?
i thought the same thing when I saw that statement...I did a lot of research before my boat purchase and I canít remember a performance bulletin where a Merc was more efficient than a Yamaha.
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Old 04-21-2019, 05:22 AM
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What's that saying about displacement? There is no substitution for displacement or something like that. I would expect the 4.6 liter motor will have more torque than a 4.2 liter motor regardless of whose name is on it. I love my 4.2 liter Yamaha. I finally saw a 4.6 mercury on the stern of a boat recently and that motor is massive.

Here is the thing companies either innovate or die. If you're a Merc boy fan you have to appreciate the 4.2 liter F300 V,6. Why? Because it changed the game. If you're a Yamaha fan boy you have to appreciate the V8 Mercury because it changes the game. Competition makes for better products. You can better believe Yamaha is designing something to up their game here.

in the end I am happy with my choice regardless of what other motors are on the market now. Two years ago when I repowered, there was no V8 Mercury to consider. Now there is. If you love your boat then that's all that matters. Who cares what other people think about it? Right.

It would be interesting to see a side by side test of both 300s . Maybe Evinrude will run that dude by side test for us all like they did with the Yamaha 200 versus the Evinrude 150. Lol.
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Old 04-21-2019, 05:53 AM
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That "dinosaur's" numbers are impressive on that Scout bulletin. The F300 is a great motor with a proven track record.

I hope in ten years we can say the same thing about the V8 Mercury. Only time will tell.

Personally, I am more concerned with getting home than 2mph or .3mpg. If i was in the market for a 300 right now, it would be the turn key Yamaha.
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Old 04-21-2019, 07:16 AM
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^^^ Agree 100%
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Old 04-21-2019, 07:35 AM
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Originally Posted by Whaler27 View Post
There is a brand of outboard that has set the "gold standard" for fuel economy. Yamaha is not it.
Don't keep us in the dark. Guessing. Who is it?
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Old 04-21-2019, 08:13 AM
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Originally Posted by BlueWaterJ View Post
Just wanted to see if anyone has been on the same or similar boat with twin Yamaha 4.2L F300s and then the new Mercury Verado 4.6L 300s? If so, which one had the better top end speed and fuel efficiency at cruise? Please share your performance numbers and which motor you preferred.

I personally have been on a 32T Contender with twin Yamaha F300's for almost 1000hrs. The boat came out of the hole like a rocket with a nice cruise around 1.7mpg at 42mph and a light load top speed of 60mph. This was a 2010 32T Contender and not the 32ST model.

Thanks,
What hole are those Yamahas mounted in and what props are you running? I have the same boat and motors(2008 31T) but fuel burn in 1.3 at 40 mph.
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