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    saltwater 5.0 weak points

    That old of a boat and used in salt water, for peace of mind, I'd rebuild a 350 from a junk yard to a 6.2 and add close cooling (antifreeze). Pitch old salt water exposed iron.
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    Alpha 1 Lower unit. Can’t turn shaft while reinstalling

    or jammed...
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    What reason causes the water leaking into gimbal bearing house?

    Some gimbal houses do not have grease valleys (travel) and grease fittings. These bearings are sealed. At least my Bravos didn't have the grease fittings.
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    Gear Oil In My Bilge

    Indeed, and now most Chevy blocks can be welded by a PROFESSIONAL welder. I had 350 welded and it worked fine.
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    Gear Oil In My Bilge

    Have you tested transom for rot. IOs are bad about transom rot. Also. invest in a pressure tester.
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    Gear Oil In My Bilge

    If you have a lube reservoir, is it possibly leaking? Is boat fresh or salt water used. Do you have good compression?
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    Another gear oil thread... 80w-90 vs. 90

    My Bravos have lube reservoirs that gravity feed gear oil to OD. I don't think reservoir is sealed other than a cap, which has a hole in it so it can breath.
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    Another gear oil thread... 80w-90 vs. 90

    I believe marine gear lube has some additives not found in std automotive gear lube. Maybe not... I'd stay with marine and what manual recommends.
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    What reason causes the water leaking into gimbal bearing house?

    There was, but the sea spray overwhelmed it, including coil/TB4. Too small... Flame arrestor was protected by a larger aluminum U channel and was not overwhelmed. After I shielded coil/TB4 with small plastic tarp, I never had ignition/water related problem. After I pulled OD for yearly...
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    What reason causes the water leaking into gimbal bearing house?

    My old Sea Ray was a wet deck boat and I'd get lots of spray. Spray would leak down between motor hatches and transom. I even had it short out a coil. I added a shield to eliminate the short and then noticed how gravity made the spray drip on coupler shaft. I pulled OD and could see daylight...
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    What reason causes the water leaking into gimbal bearing house?

    My old Alpha1 leaked there. Seal was crap. I replaced and never had an issue. Just saying...
  12. T

    What reason causes the water leaking into gimbal bearing house?

    There is a housing seal that prohibits water from entering through coupler spline. Few replace them but you have an older boat that may need a new one. Water spray may be dripping down into cavity. You can buy a pressure testing tool. I suggest investing instead of throwing parts after parts...
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    Run Merc 3.0LX on external fuel tank

    UR tank may have been compromised or your hose vent is toast. UR water fuel separator should have an additional input and output hose barb connection (may have to install). I have fuel tank selector switches in mine in addition to the fuel separators.
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    Trim won't go all the way up

    You should have OD up/down trim switches and trailer up/down switches. Charge battery!!!!! Jump it at trim's solenoid to point you towards the next place to check. If it will not go up and down completely by jumping solenoid, start looking there. It may be bad pump or bad solenoid. It takes more...
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    Cold engine despite running for a while. Water entering bilge

    Make sure thermostat is working or/and installed. The engine needs to operate efficiently at a certain temperature range. If salter water motor, y pipe or core/freeze plug may have corroded through. Use a mirror as best as possible to see under motor. Pray motor didn't freeze during winter and...
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    Shift interrupter switch

    Defective or not wired correctly... U shifting fast???? Set 700 rps in the water, not on land and hooked up to a hose.
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    Where did my oil go?

    and endless hole in the water to dump money!!!!!!
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    Tips On Replacing Starter

    My experience is that you will have to remove STB exhaust manifold and risers (if you have them), to provide more room. That is how I replaced my starter. You can cut off bold heads of 5" long bolts and cut in flat screwdriver slots into the bolts. You can then replace the manifold center bolts...
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    Thunderbolt 5 Base Timing Issues

    They both have knock sensors and modules. I will check to see if they have some other writing on them indicating they are not TB5-THX
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    Thunderbolt 5 Base Timing Issues

    that is how we determined the switches were not defective, or at least for now not causing alarm to sound. THX!
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