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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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    Mercury 850 85hp. Good engine or stay away?

    Finally did the water pump today. It seemed to be fine, but I noticed the stream at idle was kinda lousy so I went ahead and did it. Ill post some pics but I dont think there was actually anything wrong with my original one? Let me know if yall see something I dont. Also I did some reading...
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    Mercury 850 85hp. Good engine or stay away?

    Oh I wasn't running it while up on the tabs. I'd kill it floating up to the bank go back pull the motor up put it on the tabs and then Coast it into the sand
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    Mercury 850 85hp. Good engine or stay away?

    I also noticed there is in fact a little transom flex. I can still Bear all my weight down on it but it does flex just a bit.
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    Mercury 850 85hp. Good engine or stay away?

    Does anybody know if it's common for these engines that if you tilt them up like if I'm getting the boat close to the bank but I pull the motor up put it on the tabs. I was noticing that when I put it back down it would start and run but then it would run out of gas and I had to reprime the...
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    Mercury 850 85hp. Good engine or stay away?

    Prop pitch is 19 also
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    Mercury 850 85hp. Good engine or stay away?

    16ft. And id have to look this evening. Do you know if you add the switch to the controls or if its something id need to pick up a different set of controls?
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    Mercury 850 85hp. Good engine or stay away?

    Got it out on the lake today and its running great. Zero issues. Its pretty quick out of the hole. I do wish I had power tilt/trim. Should probably figure out a tach for it as well
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    Mercury 850 85hp. Good engine or stay away?

    How exactly does one test this without doing damage? I don't intend to go tearing into the boat or drilling holes. Transom feels strong and the floor feels solid. Also these boats don't really have any under floor access. Atleast that I'm aware of.
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