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    New Merc 3.0 ran hot - help

    On my maiden voyage, my 05 Merc 3.0 ib/ob immediately ran hot. Called dealer - said probably bad gauge and run till alarm goes off. Temp got up close to 250 at which time I started detecting pinging (detonation) in the motor. When stopping temp would go down to 200 and start to rise...
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    Stupid question?

    I know the Merc 3.0 is a GM engine. But I cannot place what a 3.0 GM engine powered. We all know what the 5.0 and 5.7 is, but what is the 3.0? I see it is in the same family as the old 2.5. The only 2.5 I can remember was the old Pontiac Iron Duke. Thanks.
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    Salt water operation for Merc 3.0 - Need advice

    Newbie IB/OB guy here. But now I am a little nervous about salt water running with my new Alpha Merc 3.0. Been reading horror stories about manifolds and risers giving up quick. Any advice or secrets about avoiding these and other related problems is certainly appreciated. I can tell you I...
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    4-Blade Prop on Merc 3.0

    I am in the process of purchasing a new 05 Bayliner 195 Classic with Alpha Merc 3.0. Yea, I know about Bayliners reputation. Just hoping that the hand laid hulls with lifetime warranty have improved the overall quality. Anyway, need an opinion on putting a 4 bladed prop on the 3.0 to improve...
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