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  1. M

    Bravo III Prop Help

    I have a 1997 Silverhawk 24' CC with a 300hp GM Vortech TBI motor. My bravo 3 drive is currently turning a 24 pitch wheel set. My WOT is right around 4200. I should be turning 4600-4800? The boat weighs 5200lbs dry. Does anyone know if the set of props I have now is correct?I'm thinking maybe...
  2. M

    Optimax Air Compressor Questions

    Today I recently diagnosed a destroyed air compressor on a Mercury Optimax. Piston skirt mostly gone,needle bearings gone. Tons of debris crushed up. The oil injection system on this motor pumps oil up to the compressor to lube it and then the SAME oil is passed on to the upper main crankshaft...
  3. M

    MC 5.7 Vortech TBI Misfiring Need Help

    I have a TBI 5.7 driving me nuts. I'll try and list symptoms and the troubleshooting I've preformed so far.Hopefully we can get to the bottom of this. Boat has a fresh longblock (I did not install) with the 1997 TBI components,and accessories changed over. Boat was sitting for approx 3 years or...
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