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Old 01-11-2014, 09:23 AM
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Turbo boat engine?

Just curious.You know how boat engines run at a high constant RPM.And how turbo's are know to perform at pretty much that same range in RPM's.So wouldn't a turbocharged engine in a boat be a natural good combo??.I don't even know if there are any out there...........

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Old 01-11-2014, 09:29 AM
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a lot of the diesel boat engines are turbo charged
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Old 01-11-2014, 09:30 AM
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Have you posted that question on one of the boating boards? iBoats has a huge following and they don't just talk OEM.
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Old 01-11-2014, 10:22 AM
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here you go

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Old 01-11-2014, 11:24 AM
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Work great.
Back in the early 90's had a 44ft Magnum with 3 Big block chevys in it and all 3 were twin turbo'd.
That was an E-Ticket ride 4 sure
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Old 01-11-2014, 04:26 PM
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Ayuh,... There's a few of 'em out there,...

This 1 was a kit for the 3.0l, from some machine shop in Wi. or Mich....


All the exhaust needs to be water jacketed for coolin', so price is a major consideration,...

Belt driven blowers are Easier in a boat,... like the Whipple chargers,...
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Old 01-13-2014, 02:10 PM
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The Mercury 1100hp@6500rpm 7.8:1 c/r 89 Octane Minimum (R + M)/2) (95 RON) Global Calibration)1
1350hp (7.8:1 c/r 91 Octane Minimum (R+M)/2 (98 RON) Global Calibration)
1650hp(race fuel version 112 AKI Sunoco Supreme or equivalent race fuel ) 557 cube DOHC twin turbo engines use turbos.

I would think that the complication of a gas tuboes marine engine would be the packaging of the turbo(keeping teh surrounding surfaces cool) and the cooling of the engine as most marine setuos use water in the exhaust risers.

The train of thought that marine engines run at a constant rpm therefore turbos will do well isnt the best way to look at things. Marine engines need mucho off idle/low rpm toqrue to get than hull up out the water.
If you have a turbo that only spools up well at higher engine revs, the boat might struggle to get up on plane.

A properly sized and tuned turbo setup will do GREAT in a boat.

At 0:23 you can hear the turbos begin to spook in the video supplied above. At 0.29 or so the turbos are spun up.

Pic of 1350hp Mercury racing engine


Good walk around video so you can see.

Symphony of turbo music

peace
Hog

Last edited by Hogg; 01-13-2014 at 02:35 PM.
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Old 01-21-2014, 10:16 AM
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rpm boost

I would think that the engine would over boost and fluctuate in hp more than a roots and cause problems when getting in/out of the throttle on rough water.
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Old 01-21-2014, 11:09 AM
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In this thread FBird88 gives a recipe for a supercharged boat engine build

boat engine build
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Old 01-21-2014, 02:13 PM
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Quote:
Originally Posted by crussell85 View Post
In this thread FBird88 gives a recipe for a supercharged boat engine build

boat engine build
Yeah the point of the thread was to see IF a turbo for marine use was useful.
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