The 3HM35 and 3GM30 actually call for a different plate that will accept the zinc.
Josh On Feb 17, 2017 9:00 AM, "Hoyt, Mike via CnC-List" <cnc-list@cnc-list.com> wrote: > 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> wrote: > > I don't remember seeing a reference to them in the manuals I read. > > Kindest Regards, > > Bruce > 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! > >
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