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Mercury Racing 400r V10

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gotta love innovation......wonder the rev on that thing

6600 it says

Looks that they dropped the Verado Based 400R from the lineup.

I get that they are gonna have a 500Hp version of this next year, but is this going to have more midrange than the supercharged 6 cylinder? That seems unlikely but It will probably have better top end.

It looks cool.
 
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attitude

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Problem is, if they want to sell in Europe, they have to meet their insane euro 5 emissions. Which have a very low decibel level. But yes,I agree, they do sound lame.
The 300r and 450r sound great with the aftermarket cutout people have been using. I wish Mercury would have their active exhaust get to a similar decibel level, maybe just not offer that option to European sold outboards. I bet this v10 will sound cool too.
 

MK1MOD0

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The 300r and 450r sound great with the aftermarket cutout people have been using. I wish Mercury would have their active exhaust get to a similar decibel level, maybe just not offer that option to European sold outboards. I bet this v10 will sound cool too.
I haven’t heard one with the aftermarket set up yet.
 

n2otoofast4u

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The “maintenance” argument isn’t what it used to be. It’s not cheap/easy to keep the performance outboards alive. The IO segment has gained technology and strength just like the OB stuff has.

And to the 6 of you looking for a 2.5 replacement, you better get your own foundry, because those relics are in the rear view mirror.
 

HST4ME

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The “maintenance” argument isn’t what it used to be. It’s not cheap/easy to keep the performance outboards alive. The IO segment has gained technology and strength just like the OB stuff has.

And to the 6 of you looking for a 2.5 replacement, you better get your own foundry, because those relics are in the rear view mirror.
Tell that to the apx 🤣
 

DWC

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The “maintenance” argument isn’t what it used to be. It’s not cheap/easy to keep the performance outboards alive. The IO segment has gained technology and strength just like the OB stuff has.

And to the 6 of you looking for a 2.5 replacement, you better get your own foundry, because those relics are in the rear view mirror.
I’ve been shocked to hear what the larger OB’s warranties cost and the repair bills. 😳. Definitely not cheap to maintain once they’re not covered by the factory, not to mention if it drops a $$$$ prop.
 

hallett21

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The “maintenance” argument isn’t what it used to be. It’s not cheap/easy to keep the performance outboards alive. The IO segment has gained technology and strength just like the OB stuff has.

And to the 6 of you looking for a 2.5 replacement, you better get your own foundry, because those relics are in the rear view mirror.
It’s be interesting to know what people would be willing to pay for a mondern day 2.5 equivalent. Say equal weight and equal or greater horsepower.

30+?
 

Crazyhippy

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It’s be interesting to know what people would be willing to pay for a mondern day 2.5 equivalent. Say equal weight and equal or greater horsepower.

30+?

30k is 300R range, and fair. In a perfect world, I want a 360APX Mated to a shiftable sport master. Could detune it back to 300R levels and then it should be warranty-able, could also use a 3" adapter to make it a 15" motor. Essentially all existing parts, just have to give a shit about small boats again. The list of boats they have for testing this latest Kenmore derivative:

DCB / M37
Fountain / 32NX
Fountain / 38 SCX
Midnight Express / 37 Open
MTI / 390X
MTI / V42
Mystic / M4200
Nor-Tech / 400 Sport
Nor-Tech / 450 Sport
Outerlimits / SC37
Outerlimits / SV29
Sunsation / 32 CCX
Yellowfin / 36

Some great boats, but nothing there excites me.

360 APX video from a few years back.
 

King295

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30k is 300R range, and fair. In a perfect world, I want a 360APX Mated to a shiftable sport master. Could detune it back to 300R levels and then it should be warranty-able, could also use a 3" adapter to make it a 15" motor. Essentially all existing parts, just have to give a shit about small boats again. The list of boats they have for testing this latest Kenmore derivative:

DCB / M37
Fountain / 32NX
Fountain / 38 SCX
Midnight Express / 37 Open
MTI / 390X
MTI / V42
Mystic / M4200
Nor-Tech / 400 Sport
Nor-Tech / 450 Sport
Outerlimits / SC37
Outerlimits / SV29
Sunsation / 32 CCX
Yellowfin / 36

Some great boats, but nothing there excites me.

360 APX video from a few years back.
That video is awesome. Those little boats look like a blast to drive.
 

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I’ve been shocked to hear what the larger OB’s warranties cost and the repair bills. 😳. Definitely not cheap to maintain once they’re not covered by the factory, not to mention if it drops a $$$$ prop.

The warranty is the moneymaker there for sure. I see why some people sell their boats a year before it is up.
 
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attitude

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So what's the value proposition with this over the old 400 ?

I get the same horsepower and can pay a few more thousand dollars for a new motor ?
Torque, a 300r will out accelerate a current 400r.
 

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Torque, a 300r will out accelerate a current 400r.

🤣 An NA V8 will not out accelerate a supercharged 6 cylinder making 100 HP more. You know HP is derived from torque.. so the 6 has to make more torque to make more HP. The supercharger gives it a broader torque curve than the NA V8 can achieve.

It’s debatable if a v10 making the same HP will even make more midrange torque as the supercharged 6.

Of course Merc will tell you that it will.
 
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DWC

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The warranty is the moneymaker there for sure. I see why some people sell their boats a year before it is up.
I guess it’s no different than the big turbo mercs. Can’t blame people. Hearing the service intervals and writing a check for them are two different things.
Here’s the rough pricing for the Platinum warranty. Just short of $30k for (2) 5 years. 😳
 

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I guess it’s no different than the big turbo mercs. Can’t blame people. Hearing the service intervals and writing a check for them are two different things.
Here’s the rough pricing for the Platinum warranty. Just short of $30k for (2) 5 years. 😳

Yep. The good news is that fixing them is pretty easy. I know members keep some parts “in stock” to quickly swap them out and let the warranty replace it on the back end.

Gearcase swap is pretty quick I hear :)
 

attitude

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🤣 An NA V8 will not out accelerate a supercharged 6 cylinder making 100 HP more. You know HP is derived from torque.. so the 6 has to make more torque to make more HP. The supercharger gives it a broader torque curve than the NA V8 can achieve.

It’s debatable if a v10 making the same HP will even make more midrange torque as the supercharged 6.

Of course Merc will tell you that it will.
The rumor always has been that the v8s make way more torque then the inline 6 verados.

My claim of a 300r out accelerating a 400r is coming straight from Eliminator who raced two 27 speedsters against each other. The 300r boat will pull from 40 to 80. I’ve ridden in a 400r boat plenty of times to tell you the mid range on the 400r sucks.
 

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The rumor always has been that the v8s make way more torque then the inline 6 verados.

My claim of a 300r out accelerating a 400r is coming straight from Eliminator who raced two 27 speedsters against each other. The 300r boat will pull from 40 to 80. I’ve ridden in a 400r boat plenty of times to tell you the mid range on the 400r sucks.

If that is true, great. I wouldn’t qualify that as out acceleration, because what happened under 40 and above 80?
 

attitude

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If that is true, great. I wouldn’t qualify that as out acceleration, because what happened under 40 and above 80?
I doubt they were racing under 40, a twin OB 27 speedster isn’t exactly a hole shot king. Over 80 I would assume the 400r boat would catch and pass the 300r boat as they usually are about 8-10 mph faster on the top end. The 300r boat was and open bow so should run 100-105 any day.
 

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If that is true, great. I wouldn’t qualify that as out acceleration, because what happened under 40 and above 80?
Obviously the 300 is swinging less wheel and accounts for the acceleration. Opposite with the 400. Bigger wheel and is a slug out of the hole. No way the 300 makes more torque at the flywheel than the 400 at any RPM. With that said, the best thing you may have ever posted is that horsepower comes from torque. People trying to separate the two are fighting a losing battle. The moment RPM is in the equation, torque becomes meaningless, it's now a horsepower discussion. I blame mass promotional BS for this whole mess. Unless you are talking a steam engine locomotive, most torque discussions are pretty stupid.
 

hallett21

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Mercury 400r Verado displacement was very small right? Like 2.6L?

Vs 4.8 on the 300r.

I gotta imagine that displacement takes a second to overcome even with a super charger.
 

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Obviously the 300 is swinging less wheel and accounts for the acceleration. Opposite with the 400. Bigger wheel and is a slug out of the hole. No way the 300 makes more torque at the flywheel than the 400 at any RPM. With that said, the best thing you may have ever posted is that horsepower comes from torque. People trying to separate the two are fighting a losing battle. The moment RPM is in the equation, torque becomes meaningless, it's now a horsepower discussion. I blame mass promotional BS for this whole mess. Unless you are talking a steam engine locomotive, torque discussions are pretty stupid.

Agreed 1000%
 

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Mercury 400r Verado displacement was very small right? Like 2.6L?

Vs 4.8 on the 300r.

I gotta imagine that displacement takes a second to overcome even with a super charger.

Depends on the supercharger type. Roots or screw compressors are instant. There is no lag. A pro charger (belt driven turbo essentially) makes more boost the more RPM you make.

The Verado has a roots style supercharger.
 

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It's our own little love fest...

My 6.2 boat pulls on identical 496 boats making 80 more HP and probably 100 more lb ft of torque from 30-50 MPH for the same reason.
 

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My 6.2 boat pulls on identical 496 boats making 80 more HP and probably 100 more lb ft of torque from 30-50 MPH for the same reason.
We all need magic CVTs that actually work and don't eat horsepower. Then this discussion would end.
 

hallett21

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So it’s safe to say the 450s days are numbered right?

They should be able to get another 50-100hp out of this platform I assume?
 

MK1MOD0

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I don’t think so. With a supercharged v10 500 hp, they would have 300, 400, 450 ,500 and 600. Seems a good line up for big boats. The 450 would weigh less than a supercharged v10 500 as well. ( current 300 v8 =515lbs, 450 supercharged v8 = 690). Current v10=700lbs. So add in the supercharger and it would be up there.
 

hallett21

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I don’t think so. With a supercharged v10 500 hp, they would have 300, 400, 450 ,500 and 600. Seems a good line up for big boats. The 450 would weigh less than a supercharged v10 500 as well. ( current 300 v8 =515lbs, 450 supercharged v8 = 690). Current v10=700lbs. So add in the supercharger and it would be up there.
Would they need the supercharger or just up the compression?

I guess you’re right though. The 300r and 450r are the same platform right? Just a supercharger on the 450.
 

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Would they need the supercharger or just up the compression?

I guess you’re right though. The 300r and 450r are the same platform right? Just a supercharger on the 450.

Yes. This will just be a leap frog deal.. 300-450 v8..... and 400-5X0 v10..
 

hallett21

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Maybe the 200r will weigh 699 lbs 🤣🤣🤣🤣🤣
What if they built a 1.6 liter super charged motor? No warranty and charge 35k for it. Just get the weight under 500lbs. Can’t be impossible.

Just put a super charger on that formula 60 race motor lol.
 

HST4ME

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What if they built a 1.6 liter super charged motor? No warranty and charge 35k for it. Just get the weight under 500lbs. Can’t be impossible.

Just put a super charger on that formula 60 race motor lol.
I'm not paying 35k for a non warranty parts bin motor. When It gets bad enough I'll go get a cube of aluminum and build my own. I'm sitting on 6 2.5's from 260 to s3000 and 2 drags. 6 new 225 promax blocks and 4 2.0 champ motors. I'm good for the rest of my life I hope.

That communist pile of shit 60 isn't going to handle any boost.
 

ChrisV

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Got two fresh 2.5 280s for sale. 40k lmk

Then maybe I can afford a 450r or this 400r. 🤣
 

hallett21

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I'm not paying 35k for a non warranty parts bin motor. When It gets bad enough I'll go get a cube of aluminum and build my own. I'm sitting on 6 2.5's from 260 to s3000 and 2 drags. 6 new 225 promax blocks and 4 2.0 champ motors. I'm good for the rest of my life I hope.

That communist pile of shit 60 isn't going to handle any boost.
So why hasn’t anyone just started turning out new blocks?
 

HST4ME

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Caldwell built some billet blocks and internals to some success, if boat racing was healthy in this country again, which it is a distant whimpering shadow of it's formal self you would see some more effort put forth.
 

hallett21

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Caldwell built some billet blocks and internals to some success, if boat racing was healthy in this country again, which it is a distant whimpering shadow of it's formal self you would see some more effort put forth.
So there are options to keep them alive. 👍🏻👍🏻
 
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