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  1. M

    1985 Evinrude 55 Commercial Powerhead

    If I have to chose cut the red wire or the black wire, it should be 50/50. My experience is 90/10 I picked the wrong wire. 95% is very good odds. I’m going to go old school and call them. Thanks for all the experience. 🤞
  2. M

    1985 Evinrude 55 Commercial Powerhead

    “Should” 100% sure would make me feel more comfortable. I’m surprised the company would say no. They are probably using a cross reference guide, not actual fitting different power heads up and they likely don’t want me calling and saying it did not work. They have a return policy. The appeal is...
  3. M

    1985 Evinrude 55 Commercial Powerhead

    Trying not to overthink it. The shifter arm? Are you refering to the cast bosses that support the connector to the down rod? I found a fresh water dressed power head on ebay. Comparing the pictures I took of my engine and the pictures they posted, it looks like this engine will work. I did...
  4. M

    1985 Evinrude 55 Commercial Powerhead

    My manual start assembly attaches to a boss on the power head and to what I would call the front cover that the carbs attach 2. The engines I’m finding don’t seem to have that provision since they are elec start. Swapping the front cover and flywheel is not a problem as long as the front covers...
  5. M

    1985 Evinrude 55 Commercial Powerhead

    By removing the peripherals I was able to shift the lower cowl and remove the last 2 side cover bolts. Lots of salt and corrosion, but no visible cracks into the exhaust port. The rest of the cooling system probably looks the same. So since I found the cracked casting I posted above, I’m...
  6. M

    1985 Evinrude 55 Commercial Powerhead

    Thank you both.
  7. M

    1985 Evinrude 55 Commercial Powerhead

    Lower unit is solid. Shifts fine and resealed it along with a new water pump last summer. What I meant is that an inch more clearance to the lower cowl or the ability to drop the cowl and you could easily remove the cooling jacket side cover bolts. Didn’t mean to imply it was unsatisfactory...
  8. M

    1985 Evinrude 55 Commercial Powerhead

    racerone, couldn’t sleep. Was thinking maybe the water jacket might have corroded enough that cooling water was leaking into the exhaust port and into the cylinder. I had put our smoke leak detector on the pee tube and was getting smoke out both spark plug hole, but then thought my test was...
  9. M

    1985 Evinrude 55 Commercial Powerhead

    Location South Florida. What would be the last year one of these alternate engines should fit? Driveshaft could be reused then? Ideally a donor would come from a fresh water area. Over 40 years even with flushing after every use, corrosion got pretty bad. Thank you for the information. Is there...
  10. M

    1985 Evinrude 55 Commercial Powerhead

    Hello, 39 years later after lots of TLC, I'm ready for a replacement power head or a new outboard. I know very little about outboards and what interchanges. My engine model is Evinrude E55RWLCOS Its a Commercial Engine, 2 cylinder 55hp and my understanding is it may have had a 70 lower unit in...
  11. M

    Mating Lower Unit question

    Thank you.
  12. M

    Mating Lower Unit question

    Salt water mostly. Flange surfaces look good. All good points. No harm in using sealer again. I have to confess I got watching you tube videos and noticed the techs were just installing the lower unit without sealer. Thought it was unlikely the manual would specify sealer if they didn’t think it...
  13. M

    Mating Lower Unit question

    Hello, first post. I am reinstalling the lower unit on my 1985 Evinrude 55 Commercial. My factory manual specifies sealing the lower unit mounting flange to the mid section. There were remnants from sealer when I removed it. I don’t have a problem with using sealer, but is it necessary? The...
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