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Yamaha F350 or Suzuki DF350?

Old 09-08-2019, 02:42 PM
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Default Yamaha F350 or Suzuki DF350?

Iím looking at a boat that has a 2016 Yamaha F350 with 230 hours on itó-itís in pristine condition and just had the fly wheel changed out

So...... my plan was to buy the boat and use the F350 as a trade-in against a Suzuki DF350. I have a Suzuki distributorship thatís offering me approx. 50% of the value of a new DF350 against the Yamaha trade-in.

Meanwhile, this summer, I ran into several guys all running the Yamaha F350 and they all said itís a great running engine (aside from the fact that it guzzles gas) and they were happy with it. None were too worried about its reputation or the fly wheel fly in the ointment

So at this point Iím thinking of just hanging on to the Yamaha F350 and giving it a chance. For the approx. $ 16K Iíd keep in my pocket, thatís a lot of gas I can buy

If the F350 wasnít the new ďCĒ designation, maybe Iíd just grit my teeth and do the trade-in

Whatís the THT wisdom on those two choices? Thanks for the comments
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Old 09-08-2019, 02:53 PM
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Iíve had two df350s and five F350ís. I prefer the F350ís. Their only downside is fuel burn. They run smoother and quieter than the df350s and seem to be more powerful. I wouldnít pay money to swap from a f350 to df350.
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Old 09-08-2019, 03:13 PM
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Of course this is all over my head, but isn't the dampener a well understood issue that can be addressed?
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Old 09-08-2019, 05:25 PM
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Yes, it probably is a well known issue, which is why the Seller of this boat has had it on the market since September 2018 with no takers. It reminds me of when I owned a Ficht outboard and the reactions I got from potential buyers when I tried to sell it.

But the 2016 “C” designation at least tells you when you should be swapping out the fly wheel. My problem is I run in the 3,000 - 4,000 bracket for weeks on end in a remote location. If you have a Yamaha dealership down the street from you maybe you’re in good hands. But not all of us have that luxury.

And on top of that, the F350 was purchased in Canada and is Warrantied by Yamaha Canada. That warranty does not pass on to any buyer who imports that motor into the U.S.

So a purchase would be on a wing and a prayer if I decided to hang on to it and run it rather then trade it in
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Old 09-08-2019, 05:47 PM
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Originally Posted by marketic View Post
Yes, it probably is a well known issue, which is why the Seller of this boat has had it on the market since September 2018 with no takers. It reminds me of when I owned a Ficht outboard and the reactions I got from potential buyers when I tried to sell it.

But the 2016 ďCĒ designation at least tells you when you should be swapping out the fly wheel. My problem is I run in the 3,000 - 4,000 bracket for weeks on end in a remote location. If you have a Yamaha dealership down the street from you maybe youíre in good hands. But not all of us have that luxury.

And on top of that, the F350 was purchased in Canada and is Warrantied by Yamaha Canada. That warranty does not pass on to any buyer who imports that motor into the U.S.

So a purchase would be on a wing and a prayer if I decided to hang on to it and run it rather then trade it in
OK, the 350 is not for you, then it seems an issue of valuation. Would the boat run OK with a 300? The hull is worth something, the motor has some trade value. A new motor has a cost. It seems to me that the opportunity would be to recognize the value and make an offer that gets you the boat you want, at a price that you can live with. In your offer, I would consider making a statement of the basis of your valuation, and see what happens. There are tons of used boats out there.
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Old 09-15-2019, 10:14 AM
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The Yamaha is the faster engine - I've used both engines on my boat.
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Old 09-15-2019, 10:24 AM
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in remote alaska my dealership drops off the flywheel and it's flown out to me via "bush plane"

6 bolts, less than 15 mins

non-issue no matter where you boat in this day and age
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Old 09-15-2019, 11:03 AM
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Two friends identical boats 2008 contender 35
ine has Yamaha the other Suzuki.

No no problem hands down Yamaha in spite of flywheels which has never been a problem. Power and performance Yamaha all day long
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Old 09-15-2019, 11:08 AM
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No way I would pay money to go from a f350 to a DF350. The f350 is a solid motor but thirsty. I donít trust the lower unit on the DF350 just by design and the additional moving parts in it. It seems that theory is pretty well supported by the owners who purchased early on. In my experience with mechanics the less moving parts the less you have to break.
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Old 09-15-2019, 11:09 AM
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I’d keep the F350 C series.
I repowered from F350’s to DF350’s. The YamF350 is faster top end for sure. With the Zukes, however, I cruise 5 mph faster burning less fuel than I did the the F350’s. My range is significantly greater with the Zukes at faster cruise. The F350’s have a deeper engine noise that sounds better to my ear.
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Old 09-17-2019, 07:09 AM
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here's my complete analysis of the two engines, same hull:

Yam F350 - Suz DF350: final direct comparison.
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Old 09-17-2019, 08:27 AM
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I personally wouldn't run either of them if the boat would still perform well with a 300
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Old 09-17-2019, 01:16 PM
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It would run fine with a 300. That being said, I wish there was some feed-back on the DF300B—-I heard it’ll be released on the west coast market some time March 2020
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Old 09-17-2019, 01:58 PM
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This is a no brainer.

The flywheel issue is not an issue. The only people who think it is do not own a F350. Yamaha will bring it to you in a remote location. Not hard to change and its 80 hours of operating at a specific RPM range.

The F350 A-C all have a computer that tells you when it needs to be changed. Not specific to a C model.

The F350C is a better motor than the Suzuki. They get similar fuel burn and the F350 is much more powerful. More torque and HP.

The Verado 350/400 is also a better motor than the Suzuki.
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Old 09-17-2019, 03:30 PM
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Why would anyone want to deal with fly wheel changing wether issue or not? F350 is heavier engine, less efficient, more in maintenance and horrible resale value.
You can get a twin set of used f350ís here in Florida for $15k all day long.
Suzuki V6 is a great engine and in the long run will save you fuel costs.
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Old 09-17-2019, 05:18 PM
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Originally Posted by nexxxt214 View Post
This is a no brainer.

The flywheel issue is not an issue. The only people who think it is do not own a F350. Yamaha will bring it to you in a remote location. Not hard to change and its 80 hours of operating at a specific RPM range.

The F350 A-C all have a computer that tells you when it needs to be changed. Not specific to a C model.

The F350C is a better motor than the Suzuki. They get similar fuel burn and the F350 is much more powerful. More torque and HP.

The Verado 350/400 is also a better motor than the Suzuki.

Agree with 1st 3 paragraphs. 4th paragraph incorrect from my first hand experience of both engines on the same hull.

Fuel burn significantly less with Zukes at all speeds.
My boat planes faster, with significantly fewer rpmís with Zukes.

I have no direct knowledge comparisons to the Verados
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Old 09-17-2019, 05:40 PM
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Originally Posted by reeferog View Post

Suzuki V6 is a great engine and in the long run will save you fuel costs.
Unless its broken and in the shop all the time like my Twin DF350 setup

I didn't get the F350 due to the fly wheel change out, now I wish I did. DF350 is still a very unproven motor and i'm paying the price being the guinea pig. I don't have problems with one for the motors, but both. In Oct i'm missing a sailfish tournament because of them. I promised my boys 7 and 9 we would be out there and Suzuki killed than promise.

Last edited by Brocnizer1; 09-17-2019 at 06:00 PM.
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Old 09-17-2019, 07:13 PM
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Originally Posted by Brocnizer1 View Post
Unless its broken and in the shop all the time like my Twin DF350 setup

I didn't get the F350 due to the fly wheel change out, now I wish I did. DF350 is still a very unproven motor and i'm paying the price being the guinea pig. I don't have problems with one for the motors, but both. In Oct i'm missing a sailfish tournament because of them. I promised my boys 7 and 9 we would be out there and Suzuki killed than promise.


Can I ask what kind of issues you ran into with your DF350ís? Iíve heard of seal issues in the LU but in my neighborhood (West Coast) Iíve havenít heard a peep or a complaint about the DF350ís currently out on the water (and there are lots)

Curious what your experience is, and sorry about missing the sailfish tournament!
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Old 09-17-2019, 07:20 PM
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I went from F350 to DF350 and there’s absolutely no way I’d consider going back. The DF350 is better in all aspects that matter to me, I run a 33t contender and fish 100-150 miles offshore often. The boat planes faster, holds a lower speed plane, gets better fuel economy throughout the entire rpm range, handling and docking is unbelievably better as well. Not to mention resale on F350 sucks, they are getting ready to discontinue them so it will suffer even more.
Different strokes for different folks, but for what I do they are excellent motors.
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Old 09-18-2019, 09:10 AM
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Originally Posted by Brocnizer1 View Post
Unless its broken and in the shop all the time like my Twin DF350 setup

I didn't get the F350 due to the fly wheel change out, now I wish I did. DF350 is still a very unproven motor and i'm paying the price being the guinea pig. I don't have problems with one for the motors, but both. In Oct i'm missing a sailfish tournament because of them. I promised my boys 7 and 9 we would be out there and Suzuki killed than promise.
My 340B with F350 is faster than a 340Z with Suzuki 350's or Verado 350's.

If power was equal, the 340Z should be 3-5 mph faster.
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