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    Bravo 3 anodes and mercathode

    If you're only salt water, zinc is best If you're 50/50 salt/freshwater, aluminum is best If you're freshwater only, magnesium is best Add the mercathode for extra protection of you want. Explanation was for others to understand fully the purpose of the mercathode system
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    Bravo 3 anodes and mercathode

    Aluminum is for salt and freshwater. You are okay with the material and noting that the anodes are working. Zinc will last longer but is only for salt water, spend a little more but get protection longer if you only cruise salt Mercathode system works great, feel free to install it for extra...
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    Transom assembly rebuild

    Going that far it may be in the best interest to remove the transom assy and do the steering shaft, seal, tiller, etc. on the bench. I've found access issues to the top nut with interference from the transom cutout. May require grinding out wood/glass to access the nut. Removal of the entire...
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    Mercruiser 4.3 injection without any ignition

    Terminator resistors are for the CAN network wiring/connectors. OP is having a 5v ref issue on the main engine harness, completely different wiring/connections. Sounds as though OP has figured out the CPS connector on the harness side is the issue. These are Delphi GM connectors and are...
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    replaced gimbal bearing in merc alpha 1. cannot get alignment tool to engage with engine coupler at all. have tried to move bearing every way

    Hammer
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    Mercruiser outdrive oil/liquid leak during winter

    Not terribly difficult but you don't need to remove the steering actuator to replace the gear lube hose. That is all external from the bilge area. It was mentioned about the actuator to remind you to be careful when removing the old, damaged hose. The barb on the gimbal housing side is kost...
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    alpha one gen 2 interupt switch

    The design if the clutch in the gearcase and linkage/cable allows for the load on the prop when spinning to force the v spring up/down depending on shift direction to trigger the interrupt switch. On land there is no load on the prop when in gear therefore no force on the linkage/cable to move...
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    Alternator Wire Routing

    Second picture is correct. From alt output to main + on starter. Battery cable from starter to "common" on battery switch. Battery switch should have continuity from common to either post (1 or 2) when the switch is in 1, 2 or all, but not when off As far as cable to the dash for accessories...
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    Valve seal replacement on 4.3

    Agree, surprisingly clean exhaust considering the water damge noted in the combustion chamber. Possible cracked heads, failing head gaskets, intake gaskets, or intake manifold. These scenarios are less likely than exhaust leaking especially with the widespread evidence.
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    Valve seal replacement on 4.3

    Post a picture of the exhaust ports on both heads and exhaust manifolds. You definitely have water intrusion to the combustion chamber from somewhere, almost every time it's from leaking exhaust Other pictures don't give definitive proof of water intrusion but can really only see intake ports...
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    1988 Mercruser 4.3 Liter Mercruser Engine S/N B779146 Model GM 262 V-6

    I'd change both annually along with pulling the drive and inspecting the entire transom assembly and drive external bits, u joints n such
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    flywheel replacement

    You don't with a v drive. You separate the props haft coupler from the output coupler on the v drive and pull the whole works out. Then separate the transmission/v drive from the motor and pull the flex plate and flywheel and replace the ring gear FYI I've never seen any nomenclature regarding...
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    Thermostat Housing Rebuild

    This or permatex gasket sealer. Merc stopped making (selling) perfect seal a couple years ago
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    Twin motor question. 2 standard rotation or 1 Std & 1 rev.

    All mercuiser sterndrives have come with std (LH) rotated engines since the beginning. The prop rotation was either a counter rotated alpha drive or bravos which don't care which way they rotate Only inboard setups used counter rotated (RH) engines. That ended in the 90s though. Pretty hard to...
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    Valve seal replacement on 4.3

    Pics show history of water ingestion coming most likely from the exhaust. Could be cracked heads but to be so widespread suggests failing exhaust manifold, riser or gaskets
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    Old archived posts

    Well, sometimes you gotta get your .02 in on a 10+ yr old thread, ya know?
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    Hose popped off - Alpha 1 Gen 2

    FWIW I quit using adhesive on exhaust bellows years ago with excellent results
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    Another Bravo 3 shift issue

    Why post a question? Okay, I've seen it multiple times but your shift issue was resolved prior to your OP Again, why post a question? Uh huh, not like you did with the cables and "fine" adjustment. I can troubleshoot How existential And oh well replacing the gears is something not easily...
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    Another Bravo 3 shift issue

    I never said anything about a drive exploding, those are your words. I've never seen a drive just explode, this isn't the movies. I have seen major external damage due to underwater strikes, but again no explosions I always take a pragmatic approach to troubleshooting and repair as do many...
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    Another Bravo 3 shift issue

    Dang, a bravo expert my bad
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