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  1. N

    65 HP 3 cyl Merc piston cylinder question

    you are absolutely correct. i went to the Wiesco site and they have the correct pistons. thanks.
  2. N

    65 HP 3 cyl Merc piston cylinder question

    Ok, thanks. I have not been able to find oversized pistons for this engine. Only used standard size.
  3. N

    65 HP 3 cyl Merc piston cylinder question

    Hi, this outboard is 1973 (i think) it overheated the top cylinder. Compression is now 60 psi. I looked thru the exhaust port and there is damage. It never seized. I am wondering it the cylinder is a cast sleeve or plated with something. So, can i hone it? Thanks is anyone can help.
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