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Yanmar 315 Zincs

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  • #1

    Yanmar 315 Zincs

    I have a 2007 25 with the 6lp Yanmar. I have purchased from the Yanmar dealer 5 zinks. I see where all 5 go. I have been reading in some other forums that there are possibly six to replace.

    With the ZF gear, could there be an additional (7th) one there also?

    I have the service manuals, but as others may have also seen they can be rather sparse on info and detail.

    Any thoughts are appreciated.
    1965 MFG 16'
    1973 Grady White 18'
    205' USCG Cutter Tamaroa - Engineer
    125' FEADSHIP M/Y "Gillian" - Engineer
    50' Gulfstar S/Y - Mate
    2005 Wellcraft 23' center console
    2007 Carolina Classic 25
    2007 Carolina Classic 28
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  • #2
    I just replaced my 5 zincs and I know not of a sixth.How is the boat running.? Have you enough hours to quote performance. I have about 510 hours on my 06 25 yanmar with 260 hours on my new engine. I love this boat but performance is far short of my expectations. What have you been seeing at cruise speed and are you finding that you have to run with tabs down to get on plane and hit your cruise speed? I am usually running with 4-5 guys and 60 lbs of ice with tanks filled as well. My bottom is painted and there is the usual amt. of growth.

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    • #3
      Yanmar 315 Zincs

      The 6th. zinc is in the fuel oil cooler (forward of the fuel filter). There are not any zincs in my gear oil coolers......but there will be when it comes time to replace them (5 years). The bottom/aft zinc on the heat exchanger is a real tight fit. I'm going to change it out from 1 1/4" to 1" and see if that makes it any easier.
      Laukia

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      • #4
        5 or 6?

        this is why I am puzzled. I see only 5 including the zinc in the piping at the very front of the engine. are there 5 on the block and an additional 1 on the piping?

        According the Kieth P. there is a total of 5.

        If there are 6, including the forward piping, what is the location of the other 5on the block? If I exclude the piping, I only can find 4.
        1965 MFG 16'
        1973 Grady White 18'
        205' USCG Cutter Tamaroa - Engineer
        125' FEADSHIP M/Y "Gillian" - Engineer
        50' Gulfstar S/Y - Mate
        2005 Wellcraft 23' center console
        2007 Carolina Classic 25
        2007 Carolina Classic 28

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        • #5
          Yanmar 315 Zincs

          One on the intercooler (larger).

          Two on the oil cooler.

          Two on the heat exchanger/freshwater cooler.

          One on the fuel cooler.
          Laukia

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          • #6
            6 is correct

            Thanks for the help. Yep, there are 6. Great fun to remove too!
            1965 MFG 16'
            1973 Grady White 18'
            205' USCG Cutter Tamaroa - Engineer
            125' FEADSHIP M/Y "Gillian" - Engineer
            50' Gulfstar S/Y - Mate
            2005 Wellcraft 23' center console
            2007 Carolina Classic 25
            2007 Carolina Classic 28

            Comment

            • #7
              New cc25 owner, in the northeast short season may--oct do i need to mid season?

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