Another boater at our club also has a 3GM30F. He purchased the zinc for the engine. When he went to install it he could find no place for it. 3 boat owners crowding around his engine with both service manuals and we finally found a reference in the manual that stated there was no zinc for the fresh water cooled engine.
Mike Persistence 3GM30F Halifax, NS From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of robert via CnC-List Sent: Friday, February 17, 2017 9:40 AM To: cnc-list@cnc-list.com Cc: robert Subject: Stus-List Are there Zincs I need to change ina Yanmar 3JH2E? I have a Yanmar 2GMF and I have yet to find a zinc anywhere on that engine. Rob Abbott AZURA C&C 32 - 84 Halifax, N.S. On 2017-02-17 7:40 AM, Josh Muckley via CnC-List wrote: The 2JH2E is freshwater cooled right? Meaning it has a sealed glycol loop that recirculates AND an open seawater path that cools the glycol heat exchanger and goes on to cool the exhaust before editing the boat. To the best of my knowledge these freshwater yanmars do not have zincs. The need is eliminated because where the saltwater comes in limited contact with the engine parts (heat exchanger and salt water pump). Those parts have been made of copper nickle alloys or siliconized bronze. Neither of which readily corrode in salt water. The non-freshwater cooled engines have to have zincs because of the cast iron engine block which readily corrodes in saltwater. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Feb 16, 2017 2:14 PM, "Bruce Whitmore via CnC-List" <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>> wrote: I don't remember seeing a reference to them in the manuals I read. Kindest Regards, Bruce 847.404.5092<tel:847.404.5092> Please forgive any typos as this was sent from my iPhone. _______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated! _______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
