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    2.5/3.0 Engine Swap Flywheel Questions

    I recently dropped in a rebuilt 3.0L mercruiser 140hp motor into my 19ft bowrider. The boat is running nicely for the most part, but i'm getting a fairly strong vibration out of the motor when idling in neutral. Is this just a function of the bigger engine, maybe the 2.5 i had previously was...
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    Rebuilt 3.0L Mercruiser Inline 4, Vibration noise

    Hey everyone, thanks for the all the help, this is my second post. I recently took everyones advice and replaced the crank, main and rod bearings, and gaskets on my 3.0 Mercruiser. It runs near perfectly, accelerates fine and slows fine. It works flawlessly for the first couple minutes. After...
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    3.0L engine tapping or knocking

    I just practically stole a 1980-something 3.0L mercruiser inline 4 for $150. It hadnt been started in about 2 years, but sat covered in the boat under the engine hood/cover. I pulled the motor from the boat and set about getting it running. I found that the valves were rusted in the position...
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