Re: Stus-List Fresh water flush of engine
I don't know about flushing the engine with fresh water (I'm in brackish water - mid Chesapeake) but I plan on putting a T valve in my water intake before next splash so I can easily hook up a hose to ingest anti-freeze. The intake hose seems to get bonded to the thru-hull and I'm tired of having to struggle (or cut) to get it off each year. Project number 206. Gary 30-1 St. Michaels Maryland - Original Message - From: Al Serrato via CnC-List To: cnc-list@cnc-list.com Sent: Monday, January 19, 2015 8:59 PM Subject: Stus-List Fresh water flush of engine I have a 1981 '34 with a Yanmar 3GMD engine with seawater cooling. A mechanic recommended that I install a t-valve for the raw water intake so I can flush the engine with fresh water occasionally. The engine appears to be in good condition and runs well in the two years I have owned the boat but I suspect that it is the original, making it 33 years old. While this makes sense, I'm wondering whether it's necessary at this point, given the age of the engine. in other words, is the damage already do Everything? Also, I'm wondering what the long term effect of seawater cooling is and what failures or problems result from the seawater over long periods of time. What is the likely useful life of a marine Yanmar diesel? Thanks for any advice or suggestions. Al Serrato Fidelity 1981 C & C 34 San Francisco Bay -- ___ This List is provided by the C&C Photo Album. Please donate to the C&C Photo Album to keep this list free for all subscribers. Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the C&C Photo Album. Please donate to the C&C Photo Album to keep this list free for all subscribers. Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List Fresh water flush of engine
West Marine has a product called Salt Away. I used it but the ultimate cause of the problem was elsewhere so I cannot attest to its effcacy. David F. Risch 1981 40 (401) 419-4650 (cell) Date: Mon, 19 Jan 2015 22:43:37 -0500 To: aserrat...@yahoo.com; cnc-list@cnc-list.com Subject: Re: Stus-List Fresh water flush of engine From: cnc-list@cnc-list.com Salt can precipitate and plug coolant passages along with other gunk so a good chemical cleaning might be in order from time to time. You could probably get an idea how bad things are the next time you replace zincs or check the thermostat. I've heard of using vinegar. Prestone and Peak make products using sodium citrate (IIRC). Chemical cleaning is kinda risky but so is a blown head gasket or warped heat because of blocked coolant channels. Josh On Jan 19, 2015 8:59 PM, "Al Serrato via CnC-List" wrote: I have a 1981 '34 with a Yanmar 3GMD engine with seawater cooling. A mechanic recommended that I install a t-valve for the raw water intake so I can flush the engine with fresh water occasionally. The engine appears to be in good condition and runs well in the two years I have owned the boat but I suspect that it is the original, making it 33 years old. While this makes sense, I'm wondering whether it's necessary at this point, given the age of the engine. in other words, is the damage already do Everything? Also, I'm wondering what the long term effect of seawater cooling is and what failures or problems result from the seawater over long periods of time. What is the likely useful life of a marine Yanmar diesel? Thanks for any advice or suggestions. Al SerratoFidelity1981 C & C 34San Francisco Bay ___ This List is provided by the C&C Photo Album. Please donate to the C&C Photo Album to keep this list free for all subscribers. Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the C&C Photo Album. Please donate to the C&C Photo Album to keep this list free for all subscribers. Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the C&C Photo Album. Please donate to the C&C Photo Album to keep this list free for all subscribers. Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List Fresh water flush of engine
Salt can precipitate and plug coolant passages along with other gunk so a good chemical cleaning might be in order from time to time. You could probably get an idea how bad things are the next time you replace zincs or check the thermostat. I've heard of using vinegar. Prestone and Peak make products using sodium citrate (IIRC). Chemical cleaning is kinda risky but so is a blown head gasket or warped heat because of blocked coolant channels. Josh On Jan 19, 2015 8:59 PM, "Al Serrato via CnC-List" wrote: > I have a 1981 '34 with a Yanmar 3GMD engine with seawater cooling. A > mechanic recommended that I install a t-valve for the raw water intake so I > can flush the engine with fresh water occasionally. The engine appears to > be in good condition and runs well in the two years I have owned the boat > but I suspect that it is the original, making it 33 years old. > > While this makes sense, I'm wondering whether it's necessary at this > point, given the age of the engine. in other words, is the damage already > do Everything? Also, I'm wondering what the long term effect of seawater > cooling is and what failures or problems result from the seawater over long > periods of time. What is the likely useful life of a marine Yanmar diesel? > > Thanks for any advice or suggestions. > > Al Serrato > *Fidelity* > 1981 C & C 34 > San Francisco Bay > > > > ___ > This List is provided by the C&C Photo Album. > > Please donate to the C&C Photo Album to keep this list free for all > subscribers. > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > ___ This List is provided by the C&C Photo Album. Please donate to the C&C Photo Album to keep this list free for all subscribers. Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List Fresh water flush of engine
Fresh water cooled engines frequently use copper-nickel, bronze, or other alloys where the water will be in contact with the engine internals. They also employ zincs plugs which you should keep a close eye on (mid season and end of season should be good). The shaft zincs may also help protect the engine assuming the shaft is directly coupled. As for flushing, it won't hurt anything and IMO can only make things better. I'm currently working on a system where a quick connection or a 3-way valve will align my fresh water tanks to the sea water intake for the engine. My engine is freshwater cooled but still uses seawater in the heat exchanger and the muffler. Using the freshwater tanks ensures the "drinking" water doesn't get too stale and means you don't have to rig a hose through the companion way. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Yanmar 3HM35F Solomons, MD On Jan 19, 2015 8:59 PM, "Al Serrato via CnC-List" wrote: > I have a 1981 '34 with a Yanmar 3GMD engine with seawater cooling. A > mechanic recommended that I install a t-valve for the raw water intake so I > can flush the engine with fresh water occasionally. The engine appears to > be in good condition and runs well in the two years I have owned the boat > but I suspect that it is the original, making it 33 years old. > > While this makes sense, I'm wondering whether it's necessary at this > point, given the age of the engine. in other words, is the damage already > do Everything? Also, I'm wondering what the long term effect of seawater > cooling is and what failures or problems result from the seawater over long > periods of time. What is the likely useful life of a marine Yanmar diesel? > > Thanks for any advice or suggestions. > > Al Serrato > *Fidelity* > 1981 C & C 34 > San Francisco Bay > > > > ___ > This List is provided by the C&C Photo Album. > > Please donate to the C&C Photo Album to keep this list free for all > subscribers. > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > ___ This List is provided by the C&C Photo Album. Please donate to the C&C Photo Album to keep this list free for all subscribers. Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Stus-List Fresh water flush of engine
I have a 1981 '34 with a Yanmar 3GMD engine with seawater cooling. A mechanic recommended that I install a t-valve for the raw water intake so I can flush the engine with fresh water occasionally. The engine appears to be in good condition and runs well in the two years I have owned the boat but I suspect that it is the original, making it 33 years old. While this makes sense, I'm wondering whether it's necessary at this point, given the age of the engine. in other words, is the damage already do Everything? Also, I'm wondering what the long term effect of seawater cooling is and what failures or problems result from the seawater over long periods of time. What is the likely useful life of a marine Yanmar diesel? Thanks for any advice or suggestions. Al Serrato Fidelity 1981 C & C 34 San Francisco Bay ___ This List is provided by the C&C Photo Album. Please donate to the C&C Photo Album to keep this list free for all subscribers. Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
