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    Can I use this Y pipe

    If that is salt water exposed, good luck finding a competent welder to rebuild it. The salt really f-up aluminum. Remember, this pipe can sink you!
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    Painting Aluminum boat

    Auto paint stores make a primer -etcher. Make sure topcoat is urethane 2-part paint(color and hardener) . If using etcher alone, read instructions on can.
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    going to buy a used mercruiser

    If salt water used motor, walk away! Also check boat for rot. I'd be more concern with that potential. You might be sinking too much money into yo hole.
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    Bone headed move - put the plug in with 3M 4200

    Drill or tap, depending on threads. If just a rubber plug, drill baby drill. My plug is pipe thread. TAPS ARE CHEAP.
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    Replacing transom foam seal

    I'd also drill a few 1/4" holes around near transom assembly (inside) and near drain. Pray no rot, crap or water comes out. If so, now would be time to replace transom. You can put 5200 back in holes.
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    Rusty u joints bravo 3

    If you have all bellows off, check for excessive corrosion around lips. Rainwater or sea spray may be getting past hatch lip and dripping down on shaft and getting past internal transom seal. I have had that happen to me.
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    Removing transom bolts Gen 2

    Run tap through to clean internal threads. I purchased new bolt/studs and coated as best as I could. After assembling, coat lock nuts or use ss lock nuts. I don't plan on rebuilding another I/O transom!!!!
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    Replacing transom foam seal

    Make sure transom is not rotten!!!!! I added 5200 to help seal and also to hold seal in place as I installed assembly onto boat. I also added plumber's foam inside to the lower cavity where trim cables pass. It will be a real pain to replace cables, if needed, but until you have rebuilt a...
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    Stringer rotten

    Buy a good sawsall and carbide blades. And 5 gal of poly resin and lots of cloth... Cut cap off... Or sell boat to someone who likes to work and has room to do job of re-glassing inside boat in a dry environment. Good luck!
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    Alpha one gen II leaking water near hydraulic hoses

    ROT
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    3.7 gets hot while idling

    salt water used? Inspect risers.
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    Single point drain

    I'd ditch the blue plastic crap and replace with 2 brass or SS. My ss ones came with o-rings. Most Chevy V8s have block side drains, usually a brass pipe threaded plug (one each side ). Mine have drain cocks but are very difficult to access. Yours will be too. However if you drain and go back...
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    What type sterndrive

    Gear lube or engine oil? Have you carefully checked OD? If not leaking lube, it has to be engine. How much is much? Is it worth all the work for a missing quart a season???
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    Trim cylinder hose replacement

    Most systems will automatically purge. Seal kits are cheap and offer peace of mind. Easy to install... Easy to flush. I would have open rams and flushed and then add new fluid. Pump our reservoir. Check manifold connection at OD. It has a gasket that sometimes leaks. Cheap to replace.
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    engine oil

    U live in south or north??? In NW Florida many burn 10w30/40. Crank up with 10w30 and see if it burns excessive oil. U may have to thicken oil. Most motors don't wear out, they corrode or rust out.
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    Is this a trim ram issue? Popping and grinding noises from stern drive. pics and video attached!

    or bad connections!
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    what should I check for buying an old mecruiser boat

    transom or/and stringer rot!!!! Trust me!
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    Gimbal bearing puller

    Does the nut force a claw to expand so it cannot fit through inside gimbal bearing?
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    Temp gauge issues

    There are differences between temp sender and switch. The sender must be compatible (ohms) with gauge display at helm. The switches, not so much... Also, do not use excessive Teflon sealant on threads. Excessive tape reduces grounding. My boat's former owner had some crazy wiring too. I could...
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    Mercruiser exhaust question

    I liked to have never secured my exhaust bellows on Alpha and Bravo 1. I am not familiar with III. Raise OD and see if noise is also coming from leakage.
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