Crack Epidemic at the Boatyard

[Allan12210]

And why not ? It's a Christmas Miracle.

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Ooooooh sorry, that was taken on the 13th day of Christmas. The Christmas Miracle only covers the 12 days of Christmas.

Is that what happens on Boxing Day?

 

[Muttondressedaslamb]

Hahaha - well we could certainly get into some serious thread drift on this one....

Grey cast iron can be both brazed and welded. It's easier to braze. But I've welded a lot of grey cast iron...

dj

You would have flipped your cork if you saw the exhaust elbow that came with my boat. It was cast iron, but the tube that runs from the raw water outlet into the elbow was stainless steel. It failed at the weld joint. Welding dissimilar metals is usually a no-no

 

[dLj]

You would have flipped your cork if you saw the exhaust elbow that came with my boat. It was cast iron, but the tube that runs from the raw water outlet into the elbow was stainless steel. It failed at the weld joint. Welding dissimilar metals is usually a no-no

Well, not exactly a no-no but it does have to be done right. There's a lot of research being done on some pretty amazing dissimilar metal welding. It is a very complex part of welding.

Think about it - brazing is joining dissimilar metals - by definition....

dj

 

[Muttondressedaslamb]

Empty your bilge, toss some -50F antifreeze in there if you prefer but whatever you do, make sure your bilge pump has no water in it or highly diluted antifreeze. A Rule 2000 will run you about $200

A good rule of thumb to follow

 

[Project_Mayhem]

A good rule of thumb to follow

My friend had done this but when I pulled the hose off of the pump, I found frozen water inside and the impeller was locked in place. It's a good idea to double check this.

I also picked up a refractometer for $15 to test the freeze point after winterizing. On Catalinas and many others, you can take a sampling by emptying a small amount of fluid from the muffler drain