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  1. R

    Merc BlackMax V6 150 OVERHEAT ALARM

    Greetings All! Pretty new to forum but old to powerboats. I have an '85 Merc V6 (2 stroke of course) 150 Blackmax with a 21P Laser prop on an '85 Glastron SSV187. I have owned this package since 1992, and have changed the impeller every other year or so. Heres the problem; I am underway on...
  2. R

    Merc 150 power loss and miss

    *Forgive me if this becomes verbose but I like to provide as much info as possible*<br /><br />The engine: 1984 Mercury Black Max V-6<br />The Props (both Quicksilver SS): 14x19 no vent from 1984-2000 (WOT 6000 RPM 60 MPH best); 14x23 vented from 2001-Present (WOT 5400 RPM 64 MPH best)<br />The...
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