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    End of Season Maintenance

    If boat stored in water then change it as often as possible. If stored in encloses storage and you never see a drip of gear lube on floor and you never see a drop in gear lube level than you probably get away with skipping on gear lube. On other side for $25? who cares drain and change and not...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    its not 18K for risers and manifolds. Its 18K for 4 catalytic converters (should be reused) 8 oxygen sensors (should be reused) and gaskets. Manfolds and elbows for 5.7 mpi is $2500 delivered. I don't know where the 18K came from but I am sure someone will take it if you pay it.
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    Gauge making me crazy

    make sure when you guys use the less than $20K IR guns you get as close as possible to what you are trying to get temperature. that little dot is not what its reading it reading an average over 5" at 1 foot. Also they are set for emmisivity value of 1 which is dull black color. not shiny...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    2013 to 2022 or 9 years of continuous salt water exposure (I assume you keep in the water around the clock) is impressive. Failure wasn't result of manifolds/elbows allowing seawater into engine, it was high temperatures. I think you run manifold(s) to high temperature alarm. Why not? This...
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    Alpha one gen II growling noise when turning

    Does the vibration occur at all rpm when turning?
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    Merc 5.7 Keeps Shearing starter bolts

    I have a 5.0 mpi. It had an aftermarket starter but I removed. When I did I found the Mercruiser bolts knurled shoulder had been grinned away. The POS aftermarket start also had the mounting holes 1/16" closer than Mercruiser. Went back with mercruiser/quicksilver and new bolts. hundreds of...
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    4.3 Engine coupler issue?

    Exceptional catch!!! I probably would have installed check alignment and called it good not doing the double check of rotating the engine!!!
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    I suspect if you ever remove your cats you will see much less fouling and plugging in the future. Instead of 900f plug going through your elbows on the gas side, trying to boil the salt out of the water you will just have 180F gas temp since the gas is cooled as it goes through the manifold...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    This validates my theory, only the exhaust elbows get consumed. Manifolds stay good. All that rust and crap that looks horrible in you pics is in the gas water stream at exit, no way water can go from exhaust to combustion side that far down stream. When I replaced mine just based on time (no...
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    Squeezing more from 5.0L 220hp

    Dont band-aid it. 5.0 never big enough for the boat. Plan on 350 or 383 and be done with it or get different boat.
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    PartsVu have the manifolds for $629 with free shipping. I think they charge tax. Elbows vary depending on height.
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    new GM 5.7 engine holes near oil filter

    I was referencing the filter mount style like you plugged.
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    new GM 5.7 engine holes near oil filter

    I was referencing the internal bypass valve in the oil filter which allows oil to bypass if differential pressure in the filter exceeds 8-11psig. The merc specked oil filter for my boat doesn't have a bypass valve. It is built into the remote oil filter adapter. The anti-drain back valve is...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    Well before you throw the old manifolds away do some destructive testing with a sledge hammer and safety glasses. Real cool if you had a port band or band saw you could slice in half.
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    new GM 5.7 engine holes near oil filter

    not sure about your engine but on engines with remote oil filter the bypass is in the oil filter puck that plumbs to the oil filter. In other words the oil filter doesnt have a bypass valve since it included in the oil filter puck. So if you are bolting your oil filter directly to block get...
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    Information - 3L Mercruiser

    Avoid any boat used in saltwater, avoid any boat not stored in enclosed storage when not used. The 3.0 liter is a great engine but only for smaller boat, 17 foot. In a 18 foot I question if you could pull a solemn skier. The year you are looking at will not have cats. In will be carbonated...
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    2014 MPI fault codes 321 & 322

    The rear o2 sensors will only last a year or two. The front sensors should last a long long long time. The reason the rear sensors fail is they rot. I have all new manifolds but disconnected the rear sensors since they didn't work (rotted out). Use a o2 simulator to eliminate alarm. I...
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    Intake manifold gasket replacement advice and tips

    Felpro makes two style of intake gaskets as least for V8 one with a metal liner and one without. The one without reinforcement is for racing applications very easy to trim intake passages, the problem is over time gasket squirm causes leaks. I always used one with reinforcement. Only used...
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    Totally baffling !!! Impeller replaced !! And not pumping

    See picture I attached. Its possible to install backwards, don't ask how I know...
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    Totally baffling !!! Impeller replaced !! And not pumping

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