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    Alpha one gen II growling noise when turning

    That's an old boat. I suspect many things possibly wrong. With it in water and running and looking at drive shaft, does shaft wobble? Some shafts you can see. Some U can't. Or feel the back of motor/transom assembly for vibrations. Does it wobble more when turning with drive torquing? If you...
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    Risers and manifolds at the same time?

    You nailed it! I wished SS risers worked and were reasonable $$$ for my antifreeze cooled V8 motor.
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    Risers and manifolds at the same time?

    It has been my experience in salt water only! Cast Iron risers go first: 4-6 years. In many cases when inspecting, you can notice wall thickness reduced on manifolds where they mate with risers. Remember, the block and heads are rusting too. If you get 10 years on a salt water block w/o...
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    Mercruiser Trim leaking off

    be sure to purge old fluid.
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    Waterproof Thread locker

    red-lock is great but don't expect to ever remove bolt w/o a lot of work and maybe heat.
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    Merc 5.7 Keeps Shearing starter bolts

    The bolts should be knurled and tapered for Chevy SB V8s. Has someone ever swapped flywheel?
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    4.3L Mercruiser Milkshake

    time to look for another motor. Sorry...
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    Cracked mercruiser 260

    If the change to motor out. Be prepared for possible different flywheel bolts. Remember that you will have to marine it.
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    Black wire from thunderbolt iv harness/est dissy

    I don't know if MC added extra wires for possible accessories. I had a bunch of colored and black grounds. I grounded the black ones, and nothing smoked. Thank God.
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    Gauge making me crazy

    documentation should tell impendence. Perhaps on gauge and sender??? If not do a web search for specifications.
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    Gauge making me crazy

    But are they "balanced? This is simple to check and will rule out impedance as the problem. Been there!!!!!!
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    Alpha one, noise from gimbal bearing area, new gimbal bearing, no water intrusion. Stumped!

    Very clean, but that's an old boat and may have transom rot that causes flexing and the noise. The seals are a pain to replace, but unless yours is warped, I don't suspect it is causing the noise. I am restoring an 86 SR Amberjack. I had to replace transom. What a job!!!!!! Are you sure it is...
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    Gauge making me crazy

    Perhaps former owner replaced sender or helm gauge, which was the incorrect impedance?
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    Batter Switch Off, Still Power to Instrument Panel

    do you have a fume detector always on????
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    if you got 9 years out of any iron being exposed to salt water, you have been lucky. I'd pull all that have been soaked in Salt water and manually test. 18K for risers and manifolds seem very high, but I am cheap and do most of mechanic work myself.
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    Trim not work above 3000rpm (377Mag MPI DTS Axius)

    That's a PROBLEM with all this automatic stuff.... It fails and hard to debug.
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    Mercruiser 5.7 carbureted wont start when warm

    That will do it too!
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    Mercruiser 5.7 carbureted wont start when warm

    I didn't have too. I have experience timing issues too many times. Cheap or stale gas gets too much advance, and a hot motor can't crank well.
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    Mercruiser 5.7 carbureted wont start when warm

    sounds like timing too advanced.
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    4.3 Engine coupler issue?

    looks like they more than doubled in price. Good luck!
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