Time for bigger engine?

[yamadabbadoo]

As I drool over the new 275 Yamaha jet boat, I can’t help but think about that much boat being moved by only 3.6 Litres... I realize devolping a new engine is very expensive and time consuming, but does anyone with a higher level of knowledge know why Yamaha has not developed a larger engine/jet pump for the increasingly growing boat size? Just curious as I sit here in MN watching the snow come down as I watch youtube videos of Bimini crossings...

 

[Wisefam22]

My understanding is they want all engines products to be able to be used on multiple platforms to save costs and keep problems to min.

 

[the MfM]

 

[yamadabbadoo]

I was referring to jet boats...

 

[swatski]

How about 1.6l
(And 300hp)

 

[yamadabbadoo]

Great, thanks for answering my question. Forums are awesome. Cannot believe I waited all these years to join.

 

[swatski]

Great, thanks for answering my question. Forums are awesome. Cannot believe I waited all these years to join.

Did you get a chance to read this one:

My understanding is they want all engines products to be able to be used on multiple platforms to save costs and keep problems to min.

Right on.

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[swatski]

Great, thanks for answering my question. Forums are awesome. Cannot believe I waited all these years to join.

Hey, we are all suffering from severe cabin fever across the land... hence sick humor!

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[yamadabbadoo]

At some point they decided bigger was needed when they developed the 1.8, so I was just wondering if anyone had insight as to when they may decide another upgrade is now necessary. They replaced the old 1100 with a better 1049, but not stronger. I dont think the 1.8 needs to be replaced.... there must be something coming to keep moving forward.

 

[yamadabbadoo]

Hey, we are all suffering from severe cabin fever across the land... hence sick humor!

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Understood. I guess we all handle cabin fever in our own way...

 

[Dwrat]

As I drool over the new 275 Yamaha jet boat, I can’t help but think about that much boat being moved by only 3.6 Litres... I realize devolping a new engine is very expensive and time consuming, but does anyone with a higher level of knowledge know why Yamaha has not developed a larger engine/jet pump for the increasingly growing boat size? Just curious as I sit here in MN watching the snow come down as I watch youtube videos of Bimini crossings...

I 100% agree, the bigger boat needs bigger motors no doubt.
The supercharged 1.8s seem great but there working themselves to death I bet.

 

[Wisefam22]

If you see. New motor it will be on a smaller craft first. High end ski or sled probably.

 

[haknslash]

Indmar 2.3L Ecoboost would be perfect for these boats. It ain’t a Yamaha though

 

[OrangeTJ]

Seems like Yamaha could adapt the engines from their stellar outboards to drive jet pumps if they wanted. From my perspective I have to really wonder whether the benefits of the Yamaha jet system really outweigh the drawbacks on a boat the size of the 275.

 

[PJ73]

While they are supercharged. I think a venture into the 27' and above would benefit from a larger engine.

 

[swatski]

Seriously... They already make them, Yamaha... The problem is, a single XTO motor (a V8 twice the size of the 1.8, rated at some 400+ hp) costs about as much as a whole new 240 jet boat, lol.
The 350s are about 30k a piece and already used in covered enclosures - those could be used as twins in a 27' but must not be profitable enough...

In the meantime, the 1.8s are cheap and robust, also loud as hell, but they cost 1/10 the price of a XTO and produce almost half of the XTO power. Not a bad deal. With more power the entire pump drive would need to be redesigned, too. The current pumps, even the 160mm in SVHO, max out before 300hp, or so.

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[PJ73]

Seriously... They already make them, Yamaha... The problem is, a single XTO motor (a V8 twice the size of the 1.8, rated at some 400+ hp) costs about as much as a whole new 240 jet boat, lol.
The 350s are about 30k a piece and already used in covered enclosures - those could be used as twins in a 27' but must not be profitable enough...

In the meantime, the 1.8s are cheap and robust, also loud as hell, but they cost 1/10 the price of a XTO and produce almost half of the XTO power. Not a bad deal. With more power the entire pump drive would need to be redesigned, too. The current pumps, even the 160mm in SVHO, max out before 300hp, or so.

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So then the question is, how do they get that price down for the XTO?

 

[swatski]

So then the question is, how do they get that price down for the XTO?

I doubt they ever will, or could... It's a different beast, way more refined, quiet, efficient (and... expensive to make!) - as compared to the little brutes of 1.8s.

I often wonder about it. But these jet boats of ours have intrinsic limitations that may curtail the power/fuel efficiency equations. For example, you just can't use any of the stepped hull designs to increase efficiency (reduce drag and friction on plane) because of the water intakes, etc.

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[Liveto99]

There is a tremendous back order on there high horsepower outbounds they have no reason to lower the price at all.

 

[AboveTheBest]

If you see. New motor it will be on a smaller craft first. High end ski or sled probably.

I agree, and was wondering what percentage of Yamaha’s revenue comes from boats vs jet skis.

Maybe Yamaha should have ditched the pass-through stern and gone with 3 N/A 1.8’s...