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Old 28-01-2008, 11:29   #1
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Thruhull/Seacock size/Engine cooling water

Aloha Experts,
I have never really sorted out the size of thruhull I need for cooling water">engine cooling water to my diesel engine. Could anyone give me a hint? The engine size is approx. same as Perkins/Westerbeke 4-107/4-108. The thruhull would lead to a manifold which will also (in addition to engine cooling) be used for saltwater at the galley sink and a saltwater washdown pump.
Any suggestions will be appreciated.
Kind Regards,
JohnL
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Old 28-01-2008, 12:39   #2
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Originally Posted by SkiprJohn View Post
Aloha Experts,
I have never really sorted out the size of thruhull I need for engine cooling water to my diesel engine. Could anyone give me a hint? The engine size is approx. same as Perkins/Westerbeke 4-107/4-108. The thruhull would lead to a manifold which will also (in addition to engine cooling) be used for saltwater at the galley sink and a saltwater washdown pump.
JohnL
A dedicated seacock, serving only the raw water cooling pump, would be sized to match the water pump port size (probably about 3/4" I.D.).

If the saltwater foot pump (sink) and washdown pumps are both fed with " I.D. hoses, then a 1" I.D. seacock should suffice.

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Old 28-01-2008, 15:15   #3
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Aloha Gord,
Thanks again for being there with the best answers. Always objective.
Kind Regards,
JohnL
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