www.iFourWinns.com

upon winterizing my boat, i noticed that one of my freeze plugs has been replaced with a rubber removable plug. old owner didnt feel me inn on that part. boat runs great but should i be concerned or just replace it with another freeze plug and call it the day?

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1988 freedom 160 3.0

If you don't have any cooling problems, I would replace it with a freeze plug. I wonder if that was his way of making sure that if the block were to freeze, the ice would have any easy escape to prevent cracking?

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Current Boat:
2004 Sea Ray 320 Sundancer "Nauti Luvin'"

Previous Boats:
1999 298 Vista "Seas The Day"
2008 H200SS "Nauti Luv"
2006 Tahoe Q4

Sometimes, depending on the boat and motor its hard to get a freeze plug back into the block with everything together, I have seen the rubber plugs used before but I would prefer the brass plug be put back in if it was mine.

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Brian Borchik
The Winds of Cold Springs Harbor Marina
Baldwinsville, NY

Sometimes, depending on the boat and motor its hard to get a freeze plug back into the block with everything together, I have seen the rubber plugs used before but I would prefer the brass plug be put back in if it was mine.

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Brian Borchik
The Winds of Cold Springs Harbor Marina
Baldwinsville, NY

After experiencing the effects of a core plug coming out of a car engine at speed ( spectacular and expensive !) I'd personally want to have a proper one in there. Maybe not so much an issue with open cooling ( v little coolant pressure) but with closed cooling/ pressurised coolant a must.

Graham

Maybe it was used to drain the block?

I'd also tend to want a real metal one in there. However, one good thing with a boat with open cooling system. If it did come out and you found out before it any engine overheat, no need to worry about filling the cooling system! Just put it back in and you're on your way.

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Terry
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