Re: Piston Rings for Johnson FD-10

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May 3, 2017 at 12:19 am #57023
Mumbles
Participant

    My OMC Superceding Parts List shows the original 301787 ring set superceding to 486278 which is the number on the Perfect Circle packaging used by OMC and then superceding again to the current 378416.

    I’ve used vintage PC 486289 (378432) rings before in the 5.5 and 6 horse motors and every ring had to be filed individually to get the required end gap. NOS 486278 rings might need the same treatment. I dunno.

    http://www.ebay.ie/itm/Piston-Ring-Set- … SwDNdVwbqE