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    Swap 79 100hp power head into 94 115hp jetboat?

    Looking for a replacement powerhead for the 115hp Evinrude/OMC turbojet. Other then the obvious connections, does anyone definitively whether the PTO side of the cranks for the above engines are the same diameter/length? They both use the same gasket to bolt into their respective lower units...
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    To ring or not to ring

    1995 Evinrude 115hp 90* V4. Compression on stbd side #1 130, #3 130. Compression on port side #2 100, #4 120. A buddy overheated and you can see discoloration on #2 cylinder where compression is lowest. QUESTION: Would you replace rings on all 4 cylinders while you're there, or only on low port...
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    1972 50HP Johnson Elictric Start - CDI Kill Switch?

    So I got this motor started and running great. How do I turn it off? The key switch on the control is on/off (two terminals only), with ON engaging the starter and all electrical. Off does nothing. Can I ground the pulse side of the two coil packs to shut it down, or will this damage the CDI...
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    1972 vs 1974 50HP - Why two different manuals?

    I have two engines, Model 50ESL72C (1972) running motor and a 50ES74N (1974) parts motor. Other than the '72 being a long shaft they look exactly alike. When I tried to download a manual for them, I find that the date ranges are xx-72, and then 73-89. Will I really need the two different...
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    1989/90 5hp Mariner - No pee hole? (New Impeller on it).

    S/N 0D903090 Is it possible there is no peehole? No holes under the engine head, but there is two small exhaust holes midway down the shaft pointing outwards. Would these serve as the pee holes for this engine? I can't seem to find anything relevant on this engine. Thanks..... Paul
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    What to look for - transom UPDATED

    ***** UPDATED ****** Went to see the boat today. 22' Starcraft American EX. It's a fg boat not aluminum. Only problem area I can see is where the VP outdrive unit bolts to the transom. Must leak as there is fair amount of sealant around it. No nicks or scratches anywhere else on the hull which...
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    Newbie question on bilge pump

    I have a 19' Sea Ray with a Mercruiser 165hp engine. I need to get a bilge pump, but not sure about capacity? Boat came without one. They go from 375 gph up. Any way to determine what size to get?<br />Thanks
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    1973 SRV 190 Need info

    Hey gang. New to boating and bought a project. Has Mercruiser 165 I/O. Usually restore cars but looking for something different. Mine (pics to follow) is offwhite hull with 1 red strip on either side. Looking for any and all info for the 1973 models. Any direction would help as to...
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    Looking for Links, Info etc...'73 Sea Ray SRV190

    Hey gang. Newbie to boating. Just got a 1973 Sea Ray SRV 190 with Mercruiser 165 I/O. Was wondering if there are any sites that would show paint scheme, interior etc... from that era? It's a project boat. Usually restoring cars, but decided to try this for a change!<br />Thanks
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