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    Johnson vs Merc

    This boat is rated for 100hp. 70 does okay but is getting tired.
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    Johnson vs Merc

    15 foot tri-hull mostly fishing cruising.
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    Johnson vs Merc

    Hmm okay thanks. Yes both have trim and tilt.
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    Johnson vs Merc

    Hey everyone gotta choice between a 78 merc 85hp or a 86 johnson 90hp. Both I’m told in good shape, the 90 was rebuilt before current owner who has paper work. Both around the same price. Any thoughts on choice? Thanks
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    Johnson vs merc vs Chrysler?

    I like your thinking, not afraid to get my hands dirty. I don’t know, Chryslers to me seem so simple. Heck I’ve seen automotive ignition conversions on those units to eliminate the power pack. Up here no salt water so no issue there. All these motors are relatively cheap to buy as well...
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    Chrysler 105

    can purchase one which was marine mechanic inspected, changed stator On it, runs good. He wants 800 for it. Any thoughts?
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    Johnson vs merc vs Chrysler?

    Johnson is an 85, the other 2 in the 70s, not sure exact year
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    Johnson vs merc vs Chrysler?

    Johnson 70 or merc 85 or Chrysler 105. All in good shape. Which one is a presference?
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    Merc or chrysler

    Should I get an 85hp merc for 1000 or 105 Chrysler for 700! Both in good shape.
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    Prop question

    Hmm what about stainless steel? Any better?
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    Prop question

    Sorry forgot to add that the motor is moved up to where it should be. It gets on plane reasonably well. Thanks for the input so far. I have tilt and trim as well.
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    Prop question

    Hello, I’ve got a 70 Johnson on a Starcraft st150 with OEM 131/4x17 alum prop. It spins 5300. It does 35 with 2 adults. I was looking for a bit better top end but reading this forum rpm is too low. Should I go with ss lower pitch? Thanks everyone. I’m new to props.
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    prop for a 70 johnson

    Im running a 1985 70 Johnson on a StarCraft st150 trihull with the OEM 131\4 x 17. Good hole shot and 35m/hr turning at 5300rpm. Would be nice to go a bit faster? Any better props out there that would perform better? Thanks
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    dust/dirt getting in engine

    Anybody ever heard of dust or dirt getting into an engine from travelling down grid roads? A machine shop told me this for some models it happens?
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    weak spark?

    Just wondering what a proper spark should look like. I have a Johnson 70 HP and when testing it the spark jumps the gap on my tester but very thin and not a big snap but it does jump the gap. Reason I ask is I'm having trouble starting just after its shut off for a few minutes. Sometimes...
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    Johnson 70hp

    So Im considering rebuilding my 85 70hp and it needs to be bored over and honed. The shop does alot of marine engines as well. They measured closely and found they have to go 4 over which is the maximum. My question is; will this be worth doing since its at the max or should i leave it? They...
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    Chrysler 105 on a 100hp rated semi trihull

    would putting a 105 hp Chrysler on a 100hp rated boat be a no go?
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    87 70hp Johnson or an older Johnson 85

    Need some help on which direction to go. Contemplating getting an 87 70 HP Johnson complete but needs a new top end like my 85 70hp which I invested some new parts into it only to find out the block is in bad shape with water damage and needs a new top end as well. I like the water/ exhaust...
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    1975 75hp Chrysler outboard

    Lookin at a 75 HP Chrysler the guy got from a friend last year I believe. The info I have on the motor is its on a pedestal, carbs cleaned fuel line changed I believe original water pump. It starts good and idles good with water out the port for cooling. He hasn't had it in the water yet. He...
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    1985 Johnson 70hp

    Hey everyone, new to the forum and have done lots of reading to no avail so far. pulling my hair out as to an idle problem to number 1 cylinder only. idling on the muffs, number 1 misses unless i spray a little fuel in or block some air to the carb than it hits. on the water it will idle very...
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