Go Back  The Hull Truth - Boating and Fishing Forum > BOATING FORUMS > The Boating Forum
Reload this Page >

Yamaha 350 vs Mercury 350 - Which one?

Notices
Like Tree8Likes

Yamaha 350 vs Mercury 350 - Which one?

Old 03-17-2019, 06:32 AM
  #61  
Admirals Club Admiral's Club Member
 
Join Date: Feb 2011
Location: Tarpon Springs
Posts: 4,453
Default

I know some say the fly wheels are a non issue for them but it would scare me. Knowing it’s a ticking time bomb that’s being replaced at 300 hours would make me uneasy offshore with my family. I fully understand if they are scheduled to be replaced at 300 hrs their expected life is much greater but why buy something with a known major issue that could leave you stranded way offshore. A Freeman is designed to be able to make very long runs offshore....why potentially handicap yourself....it would always be in the back of my mind from hour 1.

That being said I’m usually not a fan of buying brand new technology which is why I bought the current V-rod 350. After reading what some of the merc experts here have said I’d be going with the new V-rod.

Best of luck in your decision and congrats on the new ride.
76 Mako 23 is offline  
Old 03-17-2019, 07:14 AM
  #62  
Member
 
Join Date: Jul 2014
Posts: 33
Default

Originally Posted by Parker Yacht View Post
My bad, I did not get it. Sorry.
The XTO425 is not a replacement for the F350.
It was designed for a different application.
The two should not be thought of as interchangable on most applications.
that is the way they seem to be marketing it. Nearly every boat at the Miami show that used to sport 350s had a pair of 425s on the back of it. Maybe I am just having trouble understanding their intended market outside of replacing the 350. How would you say their applications are different?

That was one of the first things I noticed this boat show season, the F350 was a ghost. And the 425s were hanging on the boats in their place, to a consumer thatís what it looks like.

I am not knocking the 350 by any means. I have 2 on the back of my boat. Trouble free. With the new ECUs the flywheels are swapped at 80 hours of runtime in the specific RPM range, 3800-4000 (correct me if Iím wrong).
SeaBiscuit307 is offline  
Old 03-17-2019, 07:38 AM
  #63  
Senior Member
THT sponsor
 
Parker Yacht's Avatar
 
Join Date: Jan 2009
Location: Ft Lauderdale
Posts: 6,878
Default

Originally Posted by SeaBiscuit307 View Post


that is the way they seem to be marketing it. Nearly every boat at the Miami show that used to sport 350s had a pair of 425s on the back of it. Maybe I am just having trouble understanding their intended market outside of replacing the 350. How would you say their applications are different?

That was one of the first things I noticed this boat show season, the F350 was a ghost. And the 425s were hanging on the boats in their place, to a consumer thatís what it looks like.

I am not knocking the 350 by any means. I have 2 on the back of my boat. Trouble free. With the new ECUs the flywheels are swapped at 80 hours of runtime in the specific RPM range, 3800-4000 (correct me if Iím wrong).
I Don't know what you where looking at.
It's a big boat engine in most cases.
Boats that had twin F350's for the most part won't use twin F425's in a repower.
Trip and quad new boats, yes.
Parker Yacht is offline  
Old 03-17-2019, 07:46 AM
  #64  
Senior MemberCaptains Club Member
 
Join Date: Mar 2003
Location: United States
Posts: 8,913
Default

Yamaha has to have a replacement to bridge the gap

4.2 liter V6 300hp

?

5.7 liter XTO V8 DFI 425hp


If I was a betting man, I would theorize Yamaha would create a new engine for the 350hp/400hp market. I also suspect you will see a forced induction version of the XTO up to 500hp.

I would be very surprised to see a modified V6 4.2 liter at the 350hp mark.
captbone is offline  
Old 03-17-2019, 08:11 AM
  #65  
Member
 
Join Date: Jul 2014
Posts: 33
Default

Originally Posted by Parker Yacht View Post
I Don't know what you where looking at.
It's a big boat engine in most cases.
Boats that had twin F350's for the most part won't use twin F425's in a repower.
Trip and quad new boats, yes.
I am partial to Grady, so I didnít pay much attention to other models, and I canít be sure what they used to power with vs current. But Grady is exclusive with Yamaha also so they are a good example.

im about 95% sure that in Miami, Baltimore, and Atlantic City they didnít have a boat on display with a 350.

On the 330 express, a boat displayed with twin 350s in years prior, had twin 425s at all three shows. Dealers for all 3 shows confirmed Yamaha will end production ďaroundĒ June.

On on the demo dock in Miami, Yamaha runs a GW 335 Freedom, a boat that has been displayed with twin 350s. The boat was a 17 or 18 model year. Iím not positive which setup they had when it was new, but it now had a pair of 425s. Granted it is Yamaha boat and they probably wanted to show their product.

I think weíre getting a bit off topic here. Just trying to say that the way they are marketing the 425 and the way they have applied it, will lead some to believe rumors that production of the 350 is coming to an end. A Yamaha rep in Miami also confirmed this.

While they will have to continue to service and manufacture parts for the F350, I would be concerned buying and engine that they are going to end production on. Resale values will certainly take a hit, on top of the flywheel hit it has taken from day one. Just use caution and do some homework before purchasing.
SeaBiscuit307 is offline  
Old 03-17-2019, 08:16 AM
  #66  
Member
 
Join Date: Jul 2014
Posts: 33
Default

Originally Posted by captbone View Post
Yamaha has to have a replacement to bridge the gap

4.2 liter V6 300hp

?

5.7 liter XTO V8 DFI 425hp


If I was a betting man, I would theorize Yamaha would create a new engine for the 350hp/400hp market. I also suspect you will see a forced induction version of the XTO up to 500hp.

I would be very surprised to see a modified V6 4.2 liter at the 350hp mark.

suzuki is doing that with a 4.4 liter V6 @ 350.

Curious to see some reviews on that product.
SeaBiscuit307 is offline  
Old 03-17-2019, 08:34 AM
  #67  
Senior MemberCaptains Club Member
 
Join Date: Mar 2003
Location: United States
Posts: 8,913
Default

Originally Posted by SeaBiscuit307 View Post



suzuki is doing that with a 4.4 liter V6 @ 350.

Curious to see some reviews on that product.

Suzuki went for the easy answer. To design an entirely new engine from the ground up for the 350hp/400hp market is not easy and until recently with XTO Yamaha and to a very small degree Seven Marine we have not had a specific platform for the heavier, larger, 40ft+ Outboard powered boats. A perfect example is the 330 Grady White with 425hp. The cost over 350hp Yamahas to go to the 425hp has to be over a $40k increase without a huge leap in performance.

I theorize all the boat builders want a 800lb 400hp from Yamaha to replace the 350hp 5.3 liter.
captbone is offline  
Old 03-20-2019, 07:43 PM
  #68  
Admirals Club Admiral's Club Member
 
Join Date: Oct 2009
Posts: 855
Default

Originally Posted by SeaBiscuit307 View Post



suzuki is doing that with a 4.4 liter V6 @ 350.

Curious to see some reviews on that product.
Corrected. Suzuki is doing that with a 315hp

I'm a little sour as a owner of suzuki twin 350's. I have making oil issues, I don't have that 2 stroke "pop" out the hole. Honestly, these should have been labeled 325's. And to prove I own them here's a photo


Brocnizer1 is offline  
Old 03-20-2019, 08:32 PM
  #69  
Admirals Club Admiral's Club Member
 
Join Date: Jul 2015
Posts: 667
Default

Every motor should be labeled itís exact horsepower and every boat should be labeled its length. They all grow and itís a flat out lie.
VaporTrail1 is offline  
Old 03-21-2019, 05:59 AM
  #70  
Admirals Club Admiral's Club Member
 
Join Date: May 2017
Location: Newport News, VA
Posts: 35
Default

I really want to try a pair of G2s on the Freeman, not sure if I can talk them into that before we build or not. They got there hands full and I am sure they want to do some testing.

I am sure the performance would be better than the other options out there.

Maybe I can be the test boat
HighSpeedPursuit likes this.
Judson757 is offline  
Old 03-21-2019, 08:06 AM
  #71  
Senior Member
 
Join Date: Mar 2011
Posts: 1,894
Default

weight is a big deal. the 425's are HEAVY.
MUHSFINK07 is offline  
Old 03-21-2019, 08:13 AM
  #72  
Senior Member
 
Join Date: Apr 2017
Location: Eh?
Posts: 1,084
Default

Originally Posted by MUHSFINK07 View Post
weight is a big deal. the 425's are HEAVY.
It's all relative to the boat and application.
The XTO425 is 175#'s heavier than an F350, but, that includes the steering.
Would a Mercury 400 be better on a flats boat? Yes.
Would an XTO be better in twins on a 35 Pursuit? Yes.
Just because an engine says 400-425Hp on it, doesn't make it the best engine for all applications.
MUHSFINK07 likes this.
Blazer7420 is offline  
Old 03-22-2019, 07:47 AM
  #73  
Senior Member
 
Join Date: Sep 2011
Posts: 2,233
Default

Originally Posted by Ric232 View Post
Actually, the EPA website does not tell you which 4.2L model the 278hp rating is for. They only list one rating. It may be an average for the 4.2L models. A better source is the CARB engine database. It shows virtually every model separately. The F300 is reported at 221kW or 296hp. All of this CARB and EPA data is self-reported by the manufacturers.

(Sorry: Did not realize I was responding to a 4-yr old comment when the thread was "re-awakened".)
The EPA sight is for the SHO. There is a model number listed. The 278HP is verified by Evinrude's testing of the SHO against the G2. This was taken from the photo they had on their test and extrapolated.



davepjr71 is offline  
Old 03-22-2019, 07:49 AM
  #74  
Senior Member
 
Join Date: Sep 2011
Posts: 2,233
Default

Originally Posted by Ric232 View Post
I cannot imagine they would do that. Too much of a downgrade in torque.
I believe the tuned V6 is pretty close to the 350.
davepjr71 is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread