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-   -   New Cummins/Mercruiser Project (https://www.offshoreonly.com/forums/general-boating-discussion/196140-new-cummins-mercruiser-project.html)

shueman 09-26-2008 01:02 AM

New Cummins/Mercruiser Project
 
New development with Eliminator...500+hp with 1000# of torque...

http://www.performanceboats.com/html...cummins_01.jpg

http://www.performanceboats.com/html...cummins_03.jpg

http://www.performanceboats.com/html...cummins_02.jpg

Motors are going into this 43' Eagle...
http://www.performanceboats.com/html...4/43rbw_01.jpg

Target delivery is the Ft Lauderdale Boat Show...:cool:

Run_em_hard 09-26-2008 07:58 AM

Looks like a great design...also looks like a modified 24v.

Jassman 09-26-2008 08:00 AM

I think it will a great start. The 43 Scarab/Eliminator is a good platform. What top end number (80mph) are you guys looking for.:cool:

PatriYacht 09-26-2008 09:15 AM

I wonder what the fuel burn is at a steady 60 mph cruise?

tblrklakemo 09-26-2008 09:19 AM

ASD's or #6's?

Can you stagger a diesel boat......never seen it done.

Maritime_Eng 09-26-2008 09:57 AM


Originally Posted by PatriYacht (Post 2698111)
I wonder what the fuel burn is at a steady 60 mph cruise?

If the engine is 500hp the fuel burn rate is easy to calculate. It takes 1 GPH of diesel fuel for every 20hp. So 500/20= 25 GPH per engine at WOT. I would take a guess that it would burn about 20 GPH per engine @ 60 mph.

waterboy222 09-26-2008 10:21 AM

how does that compare to say, a 525 at those speeds?

TexomaPowerboater 09-26-2008 11:47 AM


Originally Posted by waterboy222 (Post 2698182)
how does that compare to say, a 525 at those speeds?

Not sure, but my 6.2 in the sea ray will burn about 25-36gph at wot, I would venture to say the 525 would be 50-60gph

Stormrider 09-26-2008 12:09 PM

60mph:
Diesels @ 40gph
525s??? will they even push that 43 @ 60mph cruise? @ 60gph? (figuring 1g/mile burn rate, which may be optimistic.)

HabanaJoe 09-26-2008 01:45 PM

Fuel consumption averages about .36-.38 lbs per Hp hour. The GPH is based on how many horsepower your using at any given time.

The 25 GPH is close, it most likely will be as high as 28 (dyno) but that "1 GPH of diesel fuel for every 20hp" is probably more representative of what you will see in the actual boat.

Maritime_Eng - that's a very good quick little gauge of fuel consumption, thank you!


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