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  1. J

    Needing higher rpm

    I recently purchased a 18' pontoon and put my 1985 mercury 115 on it. I'm running 25mph but I'm only getting 2200 rpms mayb 2500. Looking at going from a 13.5 diameter 3 blade prop with 17pitch to a 13 with a 14pitch to get the rpms up. Any suggestions? Will this be big enough of a change and...
  2. J

    1980s mercury 115 tower of power issues!

    Bought a boat from my ladies parents and it's given me problems since the beginning. At first it ran great the first time out. Had a hard time getting enough power to plane out. Then after warming up dropped in speed at WOT and started running horribly. Took it to a local mercury mechanic said...
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