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    Early 80bs 70 HP parts compatibility with 1972 65 HP

    "I have a early 80's 70 HP "I have a early 80's 70 HP SN 7155476 with damaged crank, rods and pistons. I may be able to get a 1972 65 HP with good compression but not running. From what I can find the crank, rods and pistons are the same part number. Would this be a alright donor motor...
  2. C

    Mercury 70 3 cyl rebuild questions

    "I got a free 70hp 3 cyl from "I got a free 70hp 3 cyl from the early 80’s. Compression was 70-105-105. The top cylinder had major problems so I opened her up last night. The first thing I found was the rod bearing was toast, and some foreign object had made its way in to the cylinder and done...
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