Re: sea strainer for I/O or inboard
My seacraft is an 18 ft outboard. The strainers are on a 36 ft sportfisherman. Stainer has 2" hose connections which are sized for the engine raw water pump. Go to Hamilton Marine and you will see 3 pages of strainer and scoop options. I would size according to your raw water pump inlet. Intake scoop is up to you. My intake scop on the wash down pump is a slotted scoop.
Get a strainer which has extra connection that allows you to flush engine with fresh water and add anti freeze for winter without disconnecting the hose from sea cox. It is also more convenient for cleaning heat exchanger. You can add Rydlyme or other product without having to remove heat exchanger or hoses.
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