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Old 10-01-2014, 01:34 AM   #1
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Default 1999 Maxum 1800sr 4.3efi- closed or open cooling system

Just purchased this boat and did a part lookup by serial number. The engine comes back as 834897 99 and details this as a closed cooling engine. Problem is I see no cooler installed and no reservoir for antifreeze. There are 4 hoses from the thermostat housing 2 going to the manifold/block, one going to the water pump and another going to I believe the water intake and going through the fuel cooler along the way. Should I be concerned that my engine was modified or am I missing something? Thanks.
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Old 10-01-2014, 04:45 AM   #2
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Can you post a picture?
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Old 10-01-2014, 01:57 PM   #3
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If there is a heat exchanger it's closed cooling. My old 454 didn't have an A/F reservoir. Look for a long black cylinder mounted horizontally. It will have 4 hoses connected to it. Agreed, pics would help.
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Old 10-01-2014, 03:54 PM   #4
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dumars welcome aboard

From what you described it does not sound like you have closed cooling, however as the others have stated a picture or two will help.
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