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    New 5.7 vs. Old carb 5.7

    I have a 1988 5.7L 260hp Mercruiser with 800 engine hours which is generally well maintained and running well. Given the engine's age, would a new 5.7L (350 MAG MPI) have a lot more "real" horsepower? Although everybody talks about the new efi engines getting "better" fuel economy, what kind of...
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    Hard starting carb engine - what it normal?

    Hi there: We have a 1988 Mercruiser 260 (5.7L) engine. The carb was just rebuilt and we are having trouble starting it when cold (works first time when warm). The mechanics are saying there is nothing wrong and it starts first time for them. Yesterday, I watched them start it when it was cold...
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    Prop Diameter help

    Hi: I own a 24 foot limestone with a 1988 260hp mercruiser. According the the owners manual, the ideal prop is: 15 3/4 x 16p Aluminum C-48-11322A40.<br /><br />I would like to upgrade to a SS prop but I'm having trouble finding one with the correct diameter (most seem smaller). Questions:<br...
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    Alpha/Bravo drive change

    Hi:<br /> I have a 1988 24' Limestone with a 260hp Mercruiser i/o (looks like an alpha drive of some kind). The Limestone is unusual in that it has a 3 foot jackshaft connecting the engine to the stern drive (engine is in the middle of the boat).<br /><br />When the engine wears out, I'd like...
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    What do these guages do?

    HI there: I own a 24 foot boat with a 5.7L Mercruiser engine (1988). I'm very into prevention and early detection of problems and am considering adding the following guages: fuel pressure, oil pressure, pyrometer, drive temperature (all from Gaffrig). My question is: what types of problems can...
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    Temperature Guage Problems

    Hi, I have a 12 year old boat with a Mercruiser 5.7L engine. The temperature guage seems to have stopped working and we notice the following symptoms:<br />- guage used to work fine a few weeks ago<br />- guage started cutting in and out but is completely dead now.<br />- at one time, turning on...
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