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  1. M

    Closed cooling gasket between elbow and manifold

    Is the old block off plate with two gaskets a good system for closed cooling? Do I use the Mercury permatex type gasket sealer on those? It costs me $20 a pop plus exhaust gaskets each time for new style and old style is cheaper. I can't even get at the spark plugs without removing the exhaust...
  2. M

    transom plates and engine alignment

    Got my new to me saltwater boat together after many new parts and drive was howling at higher speeds, no noise at idle, except at one trim position. This didn't seem right and no-one would buy a boat with mercruiser if it made this noise. I checked the alignment and rear motor mounts too low to...
  3. M

    oil pressure 1999 5.7 2 bbl

    My oil pressure alarm comes on after high speed run and back to idle. Oil pressure gage shows 1/2 way between 0 and 20 psi mark so I assume around 10 psi. Rotella 15W40 about 20 hours ago. Had to remove motor as I couldn't align engine and new rear mounts are even lower, another story. I hooked...
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