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    When to rebuild the bottom of an engine?

    I have a 1990 ski-boat with a 175 (4.3L) Mercruiser Alpha 1 I have owned since new. It has 400 hours on the engine and running only synthetic after 1993. Wasn't running well, ran a compression test and it failed on CLY 2-4-6 with 130, 90, 90 respectively. (when the plugs were pulled and...
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    180SE 1990 Owner in Cincinnati OH.

    Hi - I have one I bought new in 1991. It has a 4.3L Alpha one. Over the years, I have: 1. Added a fishfinder 2. Added a GPS 3. Added Oversize (12"x18") Trim Tabs 4. Modified the lower unit 5. Added a Land and Sea Shifting Prop and now another shifting prop 6. New interior 7. New...
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