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Thread: Small Outboard Jet Questions

  1. #1

    Default Small Outboard Jet Questions

    Ok so I am a total newbie when it comes to outboard jets and what not so I have a few questions.

    First, I recently purchased an Alaska Series Jet Ranger. So now I am in the market for a small outboard jet. I am thinking something in the 20-30 hp for a 2 stroke and 20-25 hp for a 4 stroke. Would like to keep it managable for just my wife to be able to move it around a short distance if possible. My main plans for the boat/motor setup is to be able to throw it in a ATV trailer and pull it with my wheeler to various river/creek/lakes and start boating from there and also be able to throw it in a small plane as well.

    I really like the better power to weight of the 2 stroke over the 4 stroke. Also I have hear bad things about leaving a 4 stroke outboard on its side(like in the back of an ATV trailer, not really sure why its a bad idea, maybe someone can clear that up.

    The problem with the 2 stroke is that you can no longer buy a new 2 stroke 20-30 hp jet so I'll be watching craiglist like a hawk. Also if I ever wanted to run on the Kenai with my 2 stroke that would be a no no as well and I fear other fisheries well end up going this way as well and don't want to have to rebuy a 4 stroke later down the road.

    So with the considerations listed above what do you think would be the best 2 stroke or 4 stroke given my concerns and application.

    Thanks

    Also if anyone is looking of unload a outboard jet in this size I'd be very interested.

  2. #2
    Moderator stid2677's Avatar
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    Default

    4 strokes will leak oil from the sump thru the valves and out the carb if laid on its side. My 2 stroke 25/20 Mercury Jet weights about 120lbs. If I remember right the same in a 4 stroke was about 156lbs. As of now if I'm not mistaken 2 strokes can be used on the Kenai all year except July. I have heard that the 30HP Yamaha jets rock if you can find one. Even mine at 120lbs is hard to carry, the shape makes it hard to handle without help. Call Reeds Snowmachine in Fairbanks he had some 25/20 2 strokes Mercurys for a while, or may know where to get one.
    http://reedsmarine.com/

    You might contact this guy, he has a motor and no boat, you never know.

    http://forums.outdoorsdirectory.com/...ad.php?t=52024

    Good Luck

    Steve
    "I refuse to let the things I can't do stop me from doing the things I can"
    Founding Member
    http://www.residenthuntersofalaska.org/

  3. #3
    Member akjeff's Avatar
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    Default

    I believe the issue, with the 4 strokes on their side, is the crank case oil. This is a non issue with the 2 stroke. Plus a 2 stroke weighs less, but no Kenai. Nothing is perfect, everything with boats is a compromise.

    A 4 stroke 25 hp is going to be very heavy, even without the jet. A 4 stroke Suzuki 25hp ,without jet, weights aprox. 160lbs. http://www.suzukimarine.com/sr_09/df25/features/ . A Yamaha 25hp 2 stroke weighs in at, only, 107 lbs. http://www.yamaha-motor.com/outboard.../11/specs.aspx . A Yamaha 50hp 2 stroke only weighs 189 lbs. http://www.yamaha-motor.com/outboard.../10/specs.aspx . The Yamaha F40 jet (30hp jet) weighs 223lbs, with jet. http://www.yamaha-motor.com/outboard...s/3/specs.aspx . Not to leave Honda out. Their 25hp weighs 155lbs, without jet. http://www.honda-marine.com/modelDet...odelGroup=BF25 . Mercury25hp jet 186 lbs, with jet. http://www.mercurymarine.com/engines...ecs.php?ID=112 .

    I am not even sure what the availability is for jets in the 25 hp range. For packing around on a 4wheeler I believe a 2 stroke is the way to go.
    Last edited by akjeff; 04-07-2009 at 21:00. Reason: added Merc.

  4. #4

    Default

    The 4 stroke will only leak if you lay it on the "WRONG" side. It can be laid down on the side the foot is on. I saw a 25 jet at the sportsmens show last weekend. I have seen some 20's also. You can order the jet lower unit for some 15hp. I looked at a lot of these for a 15 skiff I have but instead I put a 12'' set back and raised the engine (25hp 2 stroke merc. tiller handle). I can run in about a foot of water maybe 10''. Jet is obviosly better.

    Good luck.

  5. #5

    Default

    Quote Originally Posted by six View Post
    The 4 stroke will only leak if you lay it on the "WRONG" side. It can be laid down on the side the foot is on. I saw a 25 jet at the sportsmens show last weekend. I have seen some 20's also. You can order the jet lower unit for some 15hp. I looked at a lot of these for a 15 skiff I have but instead I put a 12'' set back and raised the engine (25hp 2 stroke merc. tiller handle). I can run in about a foot of water maybe 10''. Jet is obviosly better.

    Good luck.

    A side note:

    The 'wrong' side of a newer 4-stroke Tohatsu is labeled as the 'correct' side. I`ve been to the shop twice to have it pulled apart due to poor running and oil leakage. Now I set it on the opposing side and she purrs without the leaks.


    Heavy Hitter Fishing
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    Kodiak Custom Fishing Tackle Pro-Staff


  6. #6
    Member
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    Smile Yamaha 25 2 Sroke W/ Jet

    There are still some Yamaha 2 Strokes with Jets availabe at the
    Boat Shop in Fbks. $4,425.00 with prop and Jet. 110 lbs with jet.

  7. #7

    Default evinrude e-tec

    just to let you guys know... if ya got the dough... e-tecs are made in 25 hp versions now, a little heavy though, onlya bit lighter than the 4 stroke if my calcs are right. great on fuel I bet.

  8. #8
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    Default tohatsu

    been thinking of switching my jet rangers's motor to a tohatsu 30 4-stroke with jet for i think the weight was like 160 give or take 15lbs.

  9. #9

    Default

    Thanks guys. I found a sweet deal on a 30 HP yamaha 2 stroke short shaft. All up I think its gonna be in the 130-140# range once I put the jet kit on it. Looking forward to see where this thing will go.

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