New Yamaha 425s
 

One Mean Engine, The All New Yamaha 425HP V8 Has Arrived - Ocean Of News

Looks to be one very impressive engine. The fact that it has true electronic steering (fly by wire) is amazing. So are the 17″ props!

Yamaha Marine has officially unveiled the monstrous V8 XTO Offshore, a 425-horsepower, naturally aspirated 5.6L outboard.

The new engine, which will be start shipping in August, carries a five-year limited warranty for pleasure use and comes in three different shaft lengths – 25 inches, 30 inches and 35 inches. When fitted with a propeller and filled with motor and gearcase oil, the 35-inch XTO weighs more than 1,000 pounds. “This engine is designed to take us to the next level of what we can possibly do with outboard motors within the industry,” Speciale added. “We are answering the call for bigger boats with a different platform, a new, big-block 5.6L V8. It’s all about integrating power systems into much larger boats.”

New XTO OS propellers are made to complement the torque potential of the Yamaha V8 XTO Offshore. These new propellers produce more thrust in both forward and reverse, using diameters from 16 to 17 1/8 inches.

Hopefully they have the "yama-tail" mod like on all their jetski's...:lolhit:

this will be great for the large CC being built , And maybe give mother Merc a reason to boost some power out of these O/B motor's there building :)

1000 pounds each is really heavy, no? What about cost? It will be interesting to see what boats will use them. I agree that the CC people will be all over them but to me the motor on a performance cat should always be black! NEW RULE!!

This is pretty stupid. The 5 year warranty is attractive, but 425hp @999 lbs?? Seven's 627 is 627hp @ 1,094lbs and Mercury is 400hp @ 668lbs.

Yamaha 425: 2.35 lb/ hp
Yamaha 350: 2.23 lb/ hp
Seven 627: 1.74 lb/ hp
Mercury 400: 1.67 lb/ hp
Mercury 350: 1.91 lb/ hp

I really believe that Yamaha made the wrong decision, and Mercury's new effort is an opportunity for Mercury to get some of their market share back.

Would be cool to see a test on say a 34 Nor-Tech. One with twin 425 Yam's and one the twin 400r Merc's.

The weight is tough to deal with but if it eliminates the hydraulic steering then that would save weight. Not sure if the Merc weight # includes the hydraulic steering or not.

The serviceability (from the water, not needing to be pulled out) and the warranty are highlights for the motor.

i find it funny that premium is hard to get on the water in a lot of places. Never been an issue here far back as I can remember. Now race fuel you had to get on your own and still do LOL.

I'd put my money on the twin Merc's:whistle:

My 400s ship from Merc Tuesday. It will be interesting to see the difference from the 300s. At LOTO, every marina carries 93. And all gas on the lake is non ethanol.

new 300R v-8: 1.71 lb/hp (4.6 liter) still lots of room there for HP just like the Yama Hama at 5.6 liter.

good...planning on towing the skater up there soon...no need to hunt for premium then :D

the 400r's have a back log now...you must have ordered a little while back or have some good connections LOL

Yes down here marina gas mostly is 90 non ethanol. It's a PITA for guys like Dean that can't make longer runs with our group on one tank of gas because most of his boats need 93.

For that matter I don't know if I have ever seen ethanol at marinas.

But if these motors are for CC's what can you get in the bahama's? I do understand though on the 400's if you can't get 93 they adjust for the lower octane, so you just loose some power.

I really think that is the point lots of room to grow.

yea the 400R's are peaked out...at least to keep them reliable. the new platform is what we all were dreaming of when we had the 300sx's....merc knows how to milk our pocket books over time don't they :picard1: I'm already dreaming of the 300R potential but they've already got that done and waiting on the right time business wise to release it. :rolleyes:

Ordered them Feb 10. Backlog is 15 weeks now. They said 13 weeks when we ordered them.


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yea I would too. But then, I'm a merc homer. I ordered my boat with a merc, from a yamaha dealer! Btw, its 5 mph faster than the yam.