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    1994 Ranger boat

    Fuel line size is dictated by motor requirements. What motor do you have? Fittings can often be changed. Fuel line can be changed.
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    prov 150 carb question

    The cad.....
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    Weight of 1980 4-cyl 80hp?

    A DI 2 cycle motor will be a bit less weight than a 4 cycle motor, but not much. Your current motor will be at least 1/3 less weight than either of those. Gee, Merc made a 3 cylinder 90HP 2 cycle outboard for a while. They are only avail used, but at least you would move up a couple of decades.
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    Ruh-Roh… a new gear case may be in order

    Gee, that is bad luck. I hit a rock at 35mph and only snapped off the skeg, which was lucky. Sterndrive Engineering (SEI) makes replacement gearcases for popular Johnnyrudes.
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    prov 150 carb question

    Unfortunately, RTV doesn't hold up well in a gasoline environment. If the ball just needs sealing, use some of wife's nail polish to seal it. Epoxy glue will work as well. Clean the area with acetone, before applying sealer.
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    TILT / Trim

    Some of those Mercs only had a power tilt function. A quick look on the crowleymarine site shows that motor (depending on exact model) having one of 3 trim/tilt, tilt or manual tilt components. What have you got?
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    Mercury outboard wieght chart

    Gee, weight is not usually the issue. The amount of power the boat can safely handle is the issue. Both those motors are likely inline 4, 2 cycle engines. The weight difference is minimal. The power is 60% more for the 800.
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    1969 85hp Starflite, ignition system change???

    I had that ign system on my '59 Fat-Fifty. It worked very well. There was an issue, where if the engine overheated the steel rotor shaft would expand slightly, putting a small crack in the rotor. This allowed voltage to leak to ground, killing the spark. So, if the spark is good out of the...
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    17 vs 19 vs 21 Pitch?

    That same boat, when the engine was new, would lurch forward at 55MPH, when the throttle was firewalled. The top speed was in the late 60s.
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    17 vs 19 vs 21 Pitch?

    My speedboat (16 foot avenger w 1500 Merc) could pull two skiers slalom or on two (with deepwater starts), with a 21P prop. I changed to a 23P prop, and it could not get a single skier out of the water (deepwater start). the motor would not exceed 2000RPM pulling the skier. The takeaway is...
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    Rubberized or Epoxy undercarriage roll on for salt water trailer?

    In that case, use the Rustolium Rusty Metal Primer. It is oil based and has fish oil in it. I recommend you brush it onto firm rust or clean metal. It is pretty soft, so cover it with a light colored, brush on oil paint, so any subsequent rust will show thru, and allow you to address it.
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    82 50 hp tilt and trim

    If the piston seal in the trim cylinder is bad, no pump will make it hold trim. Ditto for the control valve, although, I never had any issue with that item. You may be able to find an old trim cylinder rebuild kit. It will take some looking. Then you will need to isolate the leaking piston...
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    How many very new 4 stroke engines will be running trouble free at age 50 to 75 years old ?

    There is one fly in the ointment. With the advent of computer aided design (CAD), it is much cheaper to design new engines, car bodies etc., than it used to be. This means that OEMs can economically change the design of their products more often, to make them better or cheaper. That means...
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    How many very new 4 stroke engines will be running trouble free at age 50 to 75 years old ?

    Parts availability is tied to demand. Generally, if there is enough demand, someone will make parts. It may not be the OEM, but someone will make it if enough want it. Hence the parts availability for SBC, and even the availability for parts from OB motors from the 50s and 60s. A whole lot...
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    Aluminum jon boat bench removal. Do or Don't?

    That seat also likely has flotation foam inside it. You will want that if you swamp.
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    82 50 hp tilt and trim

    If the motor pumps up under load, then the pump is probably fine. You probably have a bad control valve or leaking piston seals. Both will cause the cylinders to leak down. Crowleymarine shows both as NLA. As far as I know, the control valve is not rebuildable by us amateurs. The cylinders...
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    Rubberized or Epoxy undercarriage roll on for salt water trailer?

    I had a painted trailer in salt water. I sanded and painted with rusty metal primer. That worked somewhat but required a lot of work to maintain. Eventually I bought a galvanized trailer. The difference is night and day. The galvanized metal resists rust, and can be easily touched up with...
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    Acceleration problems

    for the 60*V motors (not sure about the 90* Vee motors), Idle jets are in the throttle bodies, with gaskets and covers over them. Did you clean them? Also, there is an air orifice which can get clogged on the carbs.
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    Tilt/trim assembly

    Take a look at the crowleymarine web site for your engine. They should have new PTT units avail, so at least you can get the part number, and look around for the best price. I bought a new PTT unit for my '93 135HPV6. It was about $950, if I remember right.
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    17 vs 19 vs 21 Pitch?

    If you change to the 19 P prop, your RPMs will likely drop by about 400RPM. You may gain speed, but it is not a certainty Tri-hulls tend to plane pretty flat, also making it hard to trim the bow up for more speed. Modular props are pretty cheap. It may be worth changing to a 19P prop. I...
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