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    Mercury 850 85hp. Good engine or stay away?

    So I reconnected the positive wire for the rectifier. Normally it joins into the engine harness. Into the red wire that feeds the trigger box. A constant 12v. Instead of connecting it to the harness there like the factory was. I ran the 12v from the rectifier to the stud on the starter...
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    Mercury 850 85hp. Good engine or stay away?

    So I replaced that wire however I didn't wire it into the harness constant 12. I ran the wire from the back of the regulator to the big lead coming into the starter solenoid. That should be all right ?
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    Mercury 850 85hp. Good engine or stay away?

    Gotcha. So disconnect the stator. I haven't ran it yet since repairing the wiring. I really don't feel like pulling the fly wheel to get at that stator, but I might try pulling the wires back and just putting some heat shrink on them and replacing that charge wire back into the harness. See...
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    Mercury 850 85hp. Good engine or stay away?

    Well the crappy wiring finally bit me. All I did before it was put some liquid electrical tape on the stuff and let it go. Took it out today and twice it just died on me and wouldn't restart. Both times it was spark. Floated it back on the trailer and brought it home. I put this off thinking I...
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    Unrealistic expectations for 71 20hp johnson?

    Rings do spring decently
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    Unrealistic expectations for 71 20hp johnson?

    Yeah I have it. Its kinda loose on the bypass port side. Also. Is the hose supposed to go to the bottom or top bypass port? Its currently going to the top port and I noticed they noticed the cowl to get at the screws to install the fuel pump as it's currently on the lower bypass cover.
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    Unrealistic expectations for 71 20hp johnson?

    Is that the little hose going from the bypass cover to the bottom of the block?
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    Unrealistic expectations for 71 20hp johnson?

    It's got a newer what I'm guessing is an Amazon fuel pump on it. But no I haven't looked into it. It appeared to pump okay when I had the carb off and I spun it over. But like I say when I had it on the water it would act like it would starve out and I had to prime the bulb for it to pick back up.
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    Unrealistic expectations for 71 20hp johnson?

    Yeah like I say if you look at the bottom piston there appears to be a lot of oil built up and it runs out the exhaust ports. Could the crankcase have oil built up? I'll have to check the rings this evening..
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    Unrealistic expectations for 71 20hp johnson?

    Got some pics. Old rebuild maybe? Definitely still crosshatch on the cylinders Not sure if you can tell by the photos I took of my bore scope. Both cylinders looks the same. Pistons and rings look good. One thing I noticed it that bottom piston is absolutely covered in oil towards the bottom...
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    Unrealistic expectations for 71 20hp johnson?

    Ill have to get some today after work. The engine is more or less an unknown. Bought it cheap with complaints of a running issue. Took it out and it stumbled and hated to idle well, but seemed okay top end. Went through the carb and it was fairly clean. I know it acts like the fuel pump...
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    Unrealistic expectations for 71 20hp johnson?

    The boat is a 73 crosby 14ft sea sled. Originally I had it powered by if I recall correctly a 69 25hp Evinrude. It pushed the boat well. Didn't feel "sluggish" even when loaded down 2 people and gear. I dont recall the top speed, but it was decent I was happy with it. Fast forward after...
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    Mercury 850 85hp. Good engine or stay away?

    Ill check when i get off work. I have the original owners card from mercury in the glove box of the boat.
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    Mercury 850 85hp. Good engine or stay away?

    Engine has been doing wonderful
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    Mercury 850 85hp. Good engine or stay away?

    Yes the shocks. Yup those
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    Mercury 850 85hp. Good engine or stay away?

    Those shocks on the motor? Are they designed to help lift the motor or just to lower it slower? Cause they dont seem to do much of anything either way.
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    Mercury 850 85hp. Good engine or stay away?

    Seems to have fixed the issue. A solid stream now at idle, but id have expected a bit more pressure on a new pump.
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    Mercury 850 85hp. Good engine or stay away?

    Gotcha. It's all new now. And from what I read it seems I was fighting with that pin on the driveshaft.
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    Mercury 850 85hp. Good engine or stay away?

    That little pin in the end of the drive shaft? Yeah if thats what your talking about. It didn't really wanna move for me? And I believe it to be the original OEM impeller. PO did say the boat hadn't been to the lake maybe 10 times since new in 1974. Im keeping all the old parts in case...
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    Mercury 850 85hp. Good engine or stay away?

    Weird pics are clear on my end. And yes. Spun the lower clock wise as I installed the pump housing. Correct right?
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