I recently installed the temperature alarm system on my raw water cooling circuit. The alarm system has brass fittings connected to the engine, but then someone advised me I should never have brass on the engine due to risk of galvanic corrosion. Is this correct?
Galvanic Corrosion
Collapse
X
-
Originally posted by ejay View PostI recently installed the temperature alarm system on my raw water cooling circuit. The alarm system has brass fittings connected to the engine, but then someone advised me I should never have brass on the engine due to risk of galvanic corrosion. Is this correct?Joe Della Barba
Coquina
C&C 35 MK I
Maryland USA
-
-
A brass sensor on a block or head is usually not a problem since it usually just carries a wire. A brass nipple OTOH carrying coolant and supporting a hose is subject to vibration and angular moment. It takes many years for a brass connection in a block carrying antifreeze for an electrolyte to develop a problem, but brass carrying salt water into an iron block is a big no no.
Comment
-
-
The more you understand galvanic corrosion the better you'll be able to manage it. This treatment is about the best I've seen on the subject and as Joe said earlier, speaking from practical experience I've never had a galvanic problem with brass or brass content alloys on any marine engine I've been involved with over 50+ years.Neil
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
Comment
-
-
Originally posted by ejay View PostThe temp sensor fitting would not be a problem I guess, however I do have brass water fittings coming into the water pump. What metal is the MMI water pump? Is there risk of corrosion there?
Comment
-
Comment