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    Need this part #

    My boat has been retro-ed to closed cooled MC V8s. However, I had to tear up exhaust manifold/riser gaskets to remove motors in order to replace a rotten transom. The riser gaskets were made out of a dark gray solid fiber (no passageways) that sandwiched a flat piece of SS (maybe 30-45 thousands...
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    WATER CAME DRIPPING OUT. Is it time to donate it?

    You just "ate" 500+ bucks of waste disposal fees. I'd be more concerned with a rotten transom or stringers or deck, especially transom.
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    Merc 7.4l Oil pressure switches

    There maybe and most likely be an impedance issue with any sender/gauge. With switches, not so much. My boat's former owner disconnected oil pressure and temperature switches and only left senders. DUMB! Who wouldn't want an alarm screaming at them if something went bad or was about to go bad?
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    Mercruiser exhaust systems.

    So what are the steel plates called that allow users to insert between manifolds and elbows (I call risers)?. I have been using a SS sandwich with fiber to block off water passages. They are aftermarket from Sierra and expensive. I have some 1/8" ss flat stock that I thought about fabricating...
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    Replacement motor going in ,need opinions

    And, adding "spacers" may cause lack of clearance between elbows and engine hatches. If they are higher than carb/breather(flame arrestor) , then there is a chance hatches will not close. I have about 1" clearance between my flame arrestors and hatches w/o spacers. Some people like installing...
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    1998 3.0 limited RPM

    have friend to move throttle while you examine carb and its linkage. I had a defective tac that was 500 rpms off compared to meter at motor. I always suspected corrosion. If my memory serves me correctly, boat trimmed correctly is supposed to get 4200 -4400 rps. I could live with 4600!
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    Gimbal bearing dimensions

    Pull it and examine it for dot. Then, mic everything for your peace of mind.
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    Where does the Mercruiser DTS system gets it power from?

    Not real sure about DTS. 13.8 sounds good! but I believe lots of resistance in wire going to your helm gauge. I am guessing 15-20' span? I've seen corrosion cause voltage drop too. Most of the gauge wiring is small gauge and may not be tinned or marine. I am having headaches too. Run test wire...
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    Replacement motor going in ,need opinions

    If fresh water boat, just rebuild it. Salt water... It depends on how much total it will cost for upgrade? Everything mentioned can be done. Electric fuel pumps for carburated motors must have a special oil sender cutoff switch to consider. Use marine electric fuel pump too. I assume newer...
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    Maybe gimbal bearing?

    14 pages.... Damn, that War and Peace!
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    Maybe gimbal bearing?

    He said he hasn't drilled. He should while motor is out. Just my 2 cents...
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    Maybe gimbal bearing?

    1987? You may also have rotten wood, lots of rotten wood. Rot may cause sagging metal and binding. Trust me! If motor is out, start pounding transom and stringer areas.
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    Mercruiser 6.2L Bravo 3 I/O alignment problems

    Good video. I have misaligned one or two in my life time and straightened just like video shows..
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    Exhaust Bellows

    The exhaust bellows are a pain and poor design. I thought about drilling a tapping the transom side and the OD side with a couple of ss cap screws to provide a "bump" to restrict ss clamps from letting loose and sliding. But so far, mine have held.
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    Bravo one drive trim line manifold removal help

    I'd be searching for a new one, since removal may crack aluminum? Good luck!
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    Mercruiser 6.2 whining noise

    Go buy a cheap stethoscope at harbor freight to help isolate noise. My alternators are located on port sides. Sometimes they whine.
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    Mercruiser 6.2L Bravo 3 I/O alignment problems

    Are forward motor mounts tight??? You may have bumped gimbal bearing and knocked center "off center" when you pulled out spline. sh--- happens. 2017 boat should not have any stringer of transom rot. Otherwise, I'd recommend examining stringer (mounts) and transom. Suggestion: Stick alignment...
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    Alpha drive will lower but not raise

    BAD CONNECTION! Clean all connectors. Salt water boats are bad about the green stuff.
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    Extreme rust removal tips

    Salt or Fresh water motor? If salt, pitch it because the insides look like your photo. If fresh and you can access area with an air hammer to LIGHTLY chip off heavy rust, then I'd try that first followed by a cup brush, then OSPHO treatment and then prime and paint. How's your thin sheet metal...
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    Maybe gimbal bearing?

    saltwater boat? Buy stethoscope and try to locate grinding before tearing everything apart on motor. At high RPMs motor noise will usually hide issues. Regardless, pull OD and inspect bearings and "slop," just to be sure and also start maintenance schedule. Log everything! At least that part...
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