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Old 08-12-2017, 06:58 PM   #6
FlyWright
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City: California Delta
Vessel Name: FlyWright
Vessel Model: 1977 Marshall Californian 34 LRC
Join Date: Apr 2008
Posts: 13,728
Quote:
Originally Posted by JCM-Houston View Post
Yes, they are turbo's.
On my non turbo'd 4.236s (85 hp), I get 1.6 GPH per engine at 7.5 Kts in a 34 LRC. Your engines are turbo versions of the 6 cyl big brother to my 4 cyl Perkins. Your engines are 50% larger and your boat's heavier but longer. At 6 kts, you might not even have the turbos kicking in.

I'd expect 5 GPH total if under turbo speed and 6-7 GPH in turbo range. You probably have the option of 9-10 kts cruise, right?
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