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    1977 70HP 3 Cylinder Sleeving question

    Hi, I am currently running a 1977 70HP Evinrude 3 Cyl on my 1972 17' Baja... When I first got the boat about 5+ years ago I had discovered it wasn't making full power.... I did new coils, plugs and wires, rebuilt carbs, and found compression low on #3 cylinder (lowest one on powerhead)... pulled...
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    1977 Evinrude 70 HP, Ethanol, Octane and such...

    Hello, Recently was playing around with my 1972 16' Baja equipped with a 3 cylinder 1977 Evinrude 70 on it... I noticed that I wasn't getting all the WOT rpm's that I used to get from the OB... seems that the plastic jacket over the wires going up to the timing advance plate, were getting "hung...
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    "Prop-er" etiquette?

    Can someone explain the relationship of diameter change AND pitch change for a boat running same weight and HP? like how will the RPM's change?? I always remembered it to be an increase of 200 RPM for each inch LESS pitch for same prop material.. AND I remembered it to be a decrease of about...
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    1977 70 HP puzzlement

    Hi I have a 1977 Evinrude 70 HP 3 cylinder OB that has me a little stumped and I am hoping for some feedback and suggestions to fix her... To start off with, this OB is on a 1972 16 foot Baja that my son purchased about 3 1/2 years ago... when we got it it ran OK, but seemed a little lacking in...
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