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    Boat doesn't rise. Prop issue?

    I have some heads that came off the parts 140. One head is good and the other has damage from a ring getting broken and beat up. So I doubt I can run that one.
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    Boat doesn't rise. Prop issue?

    Well id have the port timing and the exhaust. but without the higher compression heads I'm not really sure where the engine lands power wise.
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    Boat doesn't rise. Prop issue?

    This one cant trim high enough to venitlate. Like I say it'll definitely throw a decent rooster tail trimmed up, but I never feel the prop ventilate/cavitate. And It definitely trims up enough to make a good difference when on plane cause i can feel it lift the bow when trimming up, but not...
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    Boat doesn't rise. Prop issue?

    I originally had the 1 3/8 carbs. Original to the 1978. And i just could not get them to act right. Very poor off-idle bogging no matter how many times i went through them. Once you finally managed to get it up into rpm it ran strong. I swapped on the 1983-84 140hp carbs and those being the 1...
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    Boat doesn't rise. Prop issue?

    Well like I say I doubt the engine is making what its supposed to given the smaller carbs and different heads. I assume the jackplate was likey on there do to a bigger outboard being on their at some point that would achieve those speeds. I don't think its a hook hull? Id have to check...
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    Boat doesn't rise. Prop issue?

    So info. Boat is a 1990 Cajun paul Elias edition. 18' 6" long × 88" beam. Everything i find shows its a 1,200 lb bare boat. The boat appears very dry always kept under cover as far as I can tell and doesn't leak so i don't believe theres any water logging going on. Its got 2 group 27 lead acid...
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    Unrealistic expectations for 71 20hp johnson?

    So just an update. The motor was never quite getting full throttle. The bracket responsible for holding the throttle linkages and by that i mean the vertical shaft that meshes gears with the twist throttle. Was loose on the block. Screws loose and was missing one all together. I didn't notice...
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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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