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    Replace Mercruiser 7.4MPI with a 350mag?

    I have a 2000 Bravo III which currently has a seized up 7.4MPI.<br /><br />Displacement is 7200 pounds on an express cruiser hull. (Doral 270 SC)<br /><br />I would like to repower with a different engine, perhaps one the 350 blocks that put out similar horse power as the 7.4's 310hp.<br /><br...
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    7.4MPI Riser Gasket Failure

    I have a 2000 Mercury 7.4MPI with BravoIII drive.<br /><br />After 125 hours, the engine seized. An examination by a marine surveyor revealed that the exhaust riser gaskets had failed in both risers. There is evidence that water had been seeping in for some time.<br /><br />Has anyone else had...
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