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    Mercruiser 7.4MPI Compression after head gasket replacement

    I have a 1998 7.4 mpi sn 0L042350. The long block was replaced in 2016 with a Mercury reman by a Mercury shop. I recently rebuilt the top end because I had been experiencing some performance loss and confirmed that coolant was getting into some of the cylinders. The rebuild went well, but the...
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    7.4mpi head torque

    Hi all, I have a 1998 7.4 mpi sn 0L042350. I had to replace the head gaskets, and I ran into a problem on reinstallation. I was following the mercruiser factory service manual 90-861326-1 torque specs, and one of the bolts sheared. Questions: Is the torque spec in this manual correct for my...
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    3.0 GS High Oil Pressure

    I picked up an old Fiberform with a new(er) Volvo Penta 3.0GS. Quickly learning the new boat owner adage. I've reached a problem I'm not sure I know the cure for, and I'm hoping for some advice here. I'll go for the main issue here, and then provide some history. The oil pressure at the...
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