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    ???s on 2.5L/3.0 swap deceipher please

    Marine Engine Repair, How to Replace Boat Engines and How to Replace Engine Longblocks<br /><br />** Offering the option between Original Equipment, Direct Replacement, and High Performance OMC Sterndrive engines and Marine Engine Parts ** <br /><br />Topic: 3.0L (120/140) Replace Engine...
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    O great Don!!! PLease help on my other questions!!

    Don,<br />PLease take the time to look at my questions on year model exchange and when the last year model Merc used 2.5L<br />Thanks
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    Last year for 2.5L Merc??????

    What is the last year Merc made the 2.5L?<br />Thanks
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    Swapping 96 Merc 2.5L w/87 cobra 3.0L what is required?

    I have an 87 3.0l with a questionable block. What is required replace it with a 96 2.5L mercruiser? What has to be kept from the 96 and between the two, can I get enough parts from each to make it work?<br />Thanks
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    Does 89 3.0L fit in an 87 3.0L OMC?

    I don't know what the cut off is. Both are Cobra.
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    2.5L/3.0L automotive engine swap?

    I have an 87 bayliner OMC cobra with the 3.0L in it. I bought the boat not running. The previous owner said that he quit using the boat because of a knock. Tore into it and right away found the coupler bolts finger tight. No crank problems or pistons. BUT blown HEAD gasket between 2 & 3. It...
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    Need Prop 101 for 87 3.0L OMC Cobra

    Y'all have been a great source of info!<br />I bought an 87 Bayliner with 3.0L OMC Cobra in it. Can you tell me a bit about the prop size (spline/ diameter) to look for and also what differences the pitch and size of the prop does?<br />Thanks as always!
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    Common problems with 87 OMC 3.0L 140hp?

    Once I get into the diagnosis of the "knocking" the previous owner heard (previous posting), are there "usual" problems that occur with this combo?<br />Also would it be best, seeing how I don't know this boat, to replace the impeller on the outdrive while getting the boat ready for service?<br...
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    Bought OMC 3.0 with outdrive off

    The guy said it was knocking and took it "somewhere" and they pulled the outdrive off. Said that it was a rod knocking. <br />Need opinion here....should I reinstall outdrive and diagnose from that point (saw a posting where the guy had a "knock sound" and it wasn't the rods/mains.<br />Do I...
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