New A Seriesl?

[Big Block Power]

FYI

You can order an A25 with a mercury blue racing motor if you like. Friend has an A25 with a 520 big block in it. Sweet boat may go on sale soon.

Ok you got my attention now. Lol
Hell Cat twin turbo nope! Um mm

[loadtoad]

I will take pics in a bit. Will be on this boat this afternoon.

[cmattj]

Anytime you make an engine more volumetric efficient you make power right?

Example of a normally aspirated 350 ci most likely is only 90 % efficant as it draws air and fuel in when the intake valve opens.

So when we pressurize the intake with 5 lbs of pressure , the volumn of course is forced in . This can make a 350 ci engine act like 500 ci in efficiency.

Ok then the problem is Heat because of the increased cylinder pressures, and the energy being stored in the intake.

Having a unlimited source of water is great as we’ve seen under blower super chillers and radiant exchangers used for years to help.

But boats are so hull in- efficient they lug and strain just to maintain speed. Which constantly puts them under boost all the time.

Unlike a car that is vacuum to boost in gauge range ...our lazy , pushing through the water hulls require a lot of throttle input to maintain speed. (425 hp and we only go 60 mph?? )

This is why there are not deemed “ fuel efficient “ by today’s standards and although the technology is here. I doubt it will be available by boat mfg in the general market for family boats.

There out there now. Twin engine small supercharged scarab jet ski boats etc. small hull etc . Or companies like Nordic, eliminator, DCB still build and rig for the “ Sport Boat” market with supercharged engines.

Hey I’m all about power, and could care less about economic boating. But like you guys we are small percentage of this thinking then the new boat owner when buying the Family Bowrider.

Not the people ordering a new outer limits or Skater with 1350s . And have the resources to go through the engines and drives every 100 hrs.

See it’s not so bad.

[Ytmsn]

Hmm. So my takeaway from this thread? Katie has an impressive knowledge of engines and how they work. I never realized she is such a gearhead!

[NautiGirl]

Hmm. So my takeaway from this thread? Katie has an impressive knowledge of engines and how they work. I never realized she is such a gearhead!

Thanks YT... I'm more than just a pretty face!

[AsLan7]

Anytime you make an engine more volumetric efficient you make power right?

Example of a normally aspirated 350 ci most likely is only 90 % efficant as it draws air and fuel in when the intake valve opens.

So when we pressurize the intake with 5 lbs of pressure , the volumn of course is forced in . This can make a 350 ci engine act like 500 ci in efficiency.

Ok then the problem is Heat because of the increased cylinder pressures, and the energy being stored in the intake.

Having a unlimited source of water is great as we’ve seen under blower super chillers and radiant exchangers used for years to help.

But boats are so hull in- efficient they lug and strain just to maintain speed. Which constantly puts them under boost all the time.

Unlike a car that is vacuum to boost in gauge range ...our lazy , pushing through the water hulls require a lot of throttle input to maintain speed. (425 hp and we only go 60 mph?? )

This is why there are not deemed “ fuel efficient “ by today’s standards and although the technology is here. I doubt it will be available by boat mfg in the general market for family boats.

There out there now. Twin engine small supercharged scarab jet ski boats etc. small hull etc . Or companies like Nordic, eliminator, DCB still build and rig for the “ Sport Boat” market with supercharged engines.

Hey I’m all about power, and could care less about economic boating. But like you guys we are small percentage of this thinking then the new boat owner when buying the Family Bowrider.

Not the people ordering a new outer limits or Skater with 1350s . And have the resources to go through the engines and drives every 100 hrs.

See it’s not so bad.

Great post Matt.

[2ridgebacks]

So use a water jacketed turbo. Problem solved.
https://www.turbobygarrett.com/turbobyg ... ooling.pdf

In case the link doesn’t work.

https://www.turbobygarrett.com/turbobyg ... ooling.pdf

As to the beam width, I saw a hot rod boat several years ago with staggered v8’s and an 8’6” beam.

[2ridgebacks]

:An employee of cobalt made a comment about an A29 on the Facebook page a while back. For grins and giggles, I’ll take mine with twin Ford Raptor turbo V6’s and water jacketed turbos.

I think the Ecoboost is already water cooled turbos anyway. CC would likely be mandatory though to deal with exhaust heat. Noise should be low due to the turbos.

[NautiGirl]

:An employee of cobalt made a comment about an A29 on the Facebook page a while back. For grins and giggles, I’ll take mine with twin Ford Raptor turbo V6’s and water jacketed turbos.

I think the Ecoboost is already water cooled turbos anyway. CC would likely be mandatory though to deal with exhaust heat. Noise should be low due to the turbos.

Almost all turbos are water cooled these days. Gone are the days of tapping oil pans running oil lines and turbo timers to keep oil flowing to the turbo when the car is shut off.

My wrx was water cooled I still seriously debated installing a turbo timer you know just to show off. Yes I was a dork.

[Table Rockin]

Wtf? Are you all mechanical engineers? Im not following half this shit. Where are all the accountants at to determine if these designs are profitable?

Maybe we should start our own custom boat company? Anyone have accessible capital? Im in. Well call it Kobalt...lol

[Big Block Power]

Maybe we should start our own custom boat company? Anyone have accessible capital? Im in. Well call it Kobalt...lol

Kobalt hell no that's a tool brand at Lowes
It's Cobait

[NautiGirl]

Wtf? Are you all mechanical engineers? Im not following half this shit. Where are all the accountants at to determine if these designs are profitable?

Maybe we should start our own custom boat company? Anyone have accessible capital? Im in. Well call it Kobalt...lol

I'm in but no fiberglass work for team nauti that stuff sucks. I will happily work on stereo install though

[Norris_Boating]

I see cleats. Wonder what the other two fittings are?

Most likely, pole slots for an optional sunbrella canopy over the bow.

[Big Block Power]

:An employee of cobalt made a comment about an A29 on the Facebook page a while back. For grins and giggles, I’ll take mine with twin Ford Raptor turbo V6’s and water jacketed turbos.

I think the Ecoboost is already water cooled turbos anyway. CC would likely be mandatory though to deal with exhaust heat. Noise should be low due to the turbos.

Almost all turbos are water cooled these days. Gone are the days of tapping oil pans running oil lines and turbo timers to keep oil flowing to the turbo when the car is shut off.

My wrx was water cooled I still seriously debated installing a turbo timer you know just to show off. Yes I was a dork.

Guys twin turbo. Merc has been making twin turbos for years.
How about a 1650

[BIGGUSBLOCKUS]

:An employee of cobalt made a comment about an A29 on the Facebook page a while back. For grins and giggles, I’ll take mine with twin Ford Raptor turbo V6’s and water jacketed turbos.

I think the Ecoboost is already water cooled turbos anyway. CC would likely be mandatory though to deal with exhaust heat. Noise should be low due to the turbos.

Almost all turbos are water cooled these days. Gone are the days of tapping oil pans running oil lines and turbo timers to keep oil flowing to the turbo when the car is shut off.

My wrx was water cooled I still seriously debated installing a turbo timer you know just to show off. Yes I was a dork.

My Audi S8 is a twin turbo V8 (4.0) and it has water cooled turbos. After engine shut down there is an electric pump that moves coolant thru the turbos for a few minutes as they cool down. Can't have oil laying on the bearings boiling off now can we?

I think turbos on a marine engine would make perfect sense. They would need some heavy duty coolant lines as they would be making boost almost constantly. A bonus of smaller engine blocks and less weight.