| Author |
Message |
    
James Leonard Burkett
New member
Username: jlb1111
Post Number: 1
Registered: 10-2009
| | Posted on Sunday, October 18, 2009 - 10:53 pm: | 
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Hello all I am instaling a 5hp Acadia in a 17 ft boat but dont want to use salt water for cooling I would like to use keel cooling and dry excaust I am planing on building out of copper pipe 1in and mounting on side of keel does any one know how much is needed to cool a 5hp. cant find any info on this subject thanks |
Richard A. Day Jr.
Senior Member
Username: richardday
Post Number: 821
Registered: 11-2003
| | Posted on Monday, October 19, 2009 - 08:19 am: |
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I have a 19 foot boat with a 7.5 Palmer ZR-1 in it and the keel cooler is 3/4" copper pipe 10 feet up one side of the the keel rubbing strip and return on the other side. The exspansion tank is about 1 gallon and mounted about 1 foot above the cylinder head. Uses 50:50 anti freeze and fresh water year round. Salt water area joints are brazed not soldered. Dry exhaust through cabin top. Boat ran this way for over ten years. Hope this helps. |
James Leonard Burkett
New member
Username: jlb1111
Post Number: 2
Registered: 10-2009
| | Posted on Monday, October 19, 2009 - 10:47 am: |
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Richard thanks for the reply can you help with another question how do you stop cooling water getting in excaust Ihave a detroit that has a valve on excaust block that lets water escape from water jacket but have heard not to close off completly. My callie has two ports for water to enter muffler how do you prevent water loss thanks. |
Richard A. Day Jr.
Senior Member
Username: richardday
Post Number: 822
Registered: 11-2003
| | Posted on Monday, October 19, 2009 - 05:30 pm: |
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You could make up a plate which would go between the cylinder and exhaust chamber to permit diversion of the cylinder wall cooling water back into the heat exchanger system but I don't see how you can cool the exhaust chamber unless you have a sea water pump which would spray cooling sea water into the chamber then you have the problem the sea water would have to drain out the bottom of the exhaust chamber and over the side. You would need to come up with a method of injecting sea water into the exhaust pipe to cool it or run with a dry exhaust. Doesn't sound like a great edea to try to use the Detroit with a heat exchanger unless you are prepared for a lot of machine work etc.
Lets us see what others have to say. |
