Worrying freeze up

S

Spuddy

Well-Known Member
Joined
8 Jul 2003
Messages
1,958
Location
Kent
Visit site
Pontoon neighbour had a freeze up on his Beta engine. Twas the raw water and expansion pushed out a plug. Subsequent problems with fresh water circuit losing water and overheating engine. Not sure about details but I'd always thought that temperatures (especially in S England) didn't get low enough to freeze seawater. Now expecting pack ice in the Medway
 
Which plug did it push out?

Surprised the temperature was particularly low - was the boat in or out?

Presumably losing fresh water mean heat exchanger? Surprising if so as it is open ended as far as the raw water is concerned.

Would be useful to hear more.
 
Spuddy said:
Pontoon neighbour had a freeze up on his Beta engine. Twas the raw water and expansion pushed out a plug. Subsequent problems with fresh water circuit losing water and overheating engine. Not sure about details but I'd always thought that temperatures (especially in S England) didn't get low enough to freeze seawater. Now expecting pack ice in the Medway
Click to expand...

Rather puzzling. Just where was this plug?

I thought the raw water flow in small Beat engines was directly to the HE, through the HE tubes ( 2 passes) and then to the exhaust injection point.

My initial thoughts are that your neighbour had failed to keep the fresh water coolant antifreeze up to strength and that it was the fresh water that froze, pushing out a plug and doing some other damage at the same time !
 
Yes, really can't see that a freeze up was the problem after all I'd started my raw water cooled engine up the day before with no sign of water problems. As I said, I knew no other details so can't supply answers to any questions
 
Spuddy said:
Pontoon neighbour had a freeze up on his Beta engine. Twas the raw water and expansion pushed out a plug. Subsequent problems with fresh water circuit losing water and overheating engine. Not sure about details but I'd always thought that temperatures (especially in S England) didn't get low enough to freeze seawater. Now expecting pack ice in the Medway
Click to expand...

If it was a freshwater cooled engine and you're talking about a core plug, then surely, as others have suggested, there would not be any core plugs in the salt water side?

Richard
 
Perhaps his antifreeze strength was not up to spec, or had not been changed for a long time.
 
You must log in or register to reply here.

Share this page

Top