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Water intake orientation
* Milton Waddams wrote, On 3/20/2007 10:17 AM:
I have heard from several people that water intakes for the engine cooling should be pointed backwards. That is the opening with the grate should face to the stern with the covered part of the intake facing fore. The argument is that the water will flow more smooothly over the intake and have less drag. A vacuum will be created on the lee side of the intake so adequate water will flow into the engine. If the intake is reversed, too much water is forced into the intake and creates drag. Is this true? Thanks, I can't believe these are serious issues on a sailboat with a small engine. The more important issue is keeping it clean. The slotted scoop strainers are mounted so that the solid part faces forward and the slots face aft. I don't think this would generate suction to pull water in, if anything the suction would pull debris out when the engine is not running. |
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