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Trip 300's or Dual 425's

Old 10-25-2019, 09:49 AM
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Default Trip 300's or Dual 425's

If you guys were looking at a center console in the 34' range. Would you opt for proven Yamaha 300's or would you go with the unknown and go with dual 425's?

With respect to performance - the cruise of both options are identical according to the yamaha bulletins 3500rpm, 36mph, 1.4mpg

Top speed is a little different but not really relevant for me - 300's 62mph, 425's 59 mph

With respect to offshore fishing, if you lose one of the 425's, do you think you can get the boat to plane on one?

More maintenance costs with a 3rd engine. Higher initial cost with the 425's.

Thoughts?
Old 10-25-2019, 09:50 AM
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Twin 400 Vrats, proven, good Warranty.
Old 10-25-2019, 09:54 AM
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doubtful it would plane on one 425. would plane on 2 300's
Old 10-25-2019, 10:03 AM
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Originally Posted by smilsom View Post

More maintenance costs with a 3rd engine.
Is this really a concern, given the fiscal stratosphere in which you are riding????

There will a lot more service experience and options available with the trips....
Old 10-25-2019, 10:05 AM
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Check insurance price difference. the trips seem to bump up the cost over twins of any horsepower.
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Old 10-25-2019, 10:09 AM
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What boat? Triples for my little brain but twin 400’s-425’s for my big brain. My little brain wins out a lot though.
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Old 10-25-2019, 10:14 AM
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dual 425s. no question.
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Old 10-25-2019, 10:25 AM
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Trips for the ballin factor
Old 10-25-2019, 10:25 AM
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Boating Mag has a comparison this on this exact scenario, I believe it was a Pursuit OS355.
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Old 10-25-2019, 10:27 AM
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If the initial cost is lower on trip 300 Yamaha’s to me that’s obviously a huge advantage. What engine has more total hours in the field, Yamaha. Reputation of the engines both great but I would think Yamaha has the small lead. Sometimes the simple unsexy choice is the best choice.
Old 10-25-2019, 10:33 AM
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Trip 300's
Old 10-25-2019, 10:36 AM
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I vote for the trips, No worries about getting home on 2 motors. Long history of being a great engine, except the making oil issue. Which I deal with on my 250's and it has not had any major impact in my use yet. I do not know about the 425's but the 300 do require high octane fuel. With a 34' you could easily get away with trip 250's and thus put standard 87 octane in. However I choose to run rec 90 in mine, Although I am in a different league than you. I only got 2 motors, and 3 is not an option on my boat.
Old 10-25-2019, 10:38 AM
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Originally Posted by highflier1 View Post
I vote for the trips, No worries about getting home on 2 motors. Long history of being a great engine, except the making oil issue. Which I deal with on my 250's and it has not had any major impact in my use yet. I do not know about the 425's but the 300 do require high octane fuel. With a 34' you could easily get away with trip 250's and thus put standard 87 octane in. However I choose to run rec 90 in mine, Although I am in a different league than you. I only got 2 motors, and 3 is not an option on my boat.
You must have some of those fancy Yam 4.2 300s, because my manual says 87 10% max ethanol, not premium....
Old 10-25-2019, 10:42 AM
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I was running home from our local inlet last night, rolling about 35 and got PASSED by a 30 something Contender that had triples but had the starboard motor completely tilted out of the water.

Been on a number of boats with 425's.

I would go trips.
Old 10-25-2019, 10:48 AM
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Originally Posted by jjc0009 View Post
You must have some of those fancy Yam 4.2 300s, because my manual says 87 10% max ethanol, not premium....
Must have printed different manuals, mine suggests 89 octane.
Old 10-25-2019, 10:49 AM
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Originally Posted by PeteVB View Post
Boating Mag has a comparison this on this exact scenario, I believe it was a Pursuit OS355.
I’d be really interested to read this. I searched a bit but couldn’t find the article.

Can you post a link?

Also, Pursuit have the performance reports out for the OS355 with twin 425s and IMO it’s very disappointing. Not really the OPs purpose but that hull seems to run best with more power IE trips.
Old 10-25-2019, 10:50 AM
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I have heard from a Yamaha dealer that the 425s are uncomfortably loud. I have not experienced it first hand. He said it is a legitimate issue. See if you can sea trial a boat with them on it and see what you think.
Old 10-25-2019, 10:57 AM
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Don’t the trips even weigh less than the twin setup? Trips would be the way I’d go.
Old 10-25-2019, 11:22 AM
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Originally Posted by dadriva View Post


I’d be really interested to read this. I searched a bit but couldn’t find the article.

Can you post a link?

Also, Pursuit have the performance reports out for the OS355 with twin 425s and IMO it’s very disappointing. Not really the OPs purpose but that hull seems to run best with more power IE trips.
It is the latest issue, I have it at home, I believe trips beat out the 425's in every category
Old 10-25-2019, 11:24 AM
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Originally Posted by kwipp View Post
Don’t the trips even weigh less than the twin setup? Trips would be the way I’d go.
1900ish for 2 425's. 1700ish for 3 f300's. I would go trips all day every day. More power, less weight, proven, less complex (engine wise).
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