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  1. 1970kayhydro

    Speedometer Question?

    I got the pitot tube in the mail just as i was leaving for the river so I backed up and put it on. When I got the boat out and planed out the guage was only going up to 15 mph and im sure I was going at least double that. What could be the problem? The guage is 38 years old like the boat and the...
  2. 1970kayhydro

    Some pictures of the boat i want to repaint and the parts that may need repair.

    The top layer of wood in the back had a broken bolt that I have replaced but the small crack that you see below didn't change. Do i need to do something about it? Should I remove these "fins" that someone put on the bottom of the sponsons, one is slightly bent. Does the transom look ok...
  3. 1970kayhydro

    full size pictures of my old boat project.

    Im not sure this is going to work, let me know if it doesn't.
  4. 1970kayhydro

    Will my boat flip over?

    The local boat mechanic said something about my 1970 hydroplane fliping over and now the girlfriend is afraid to ride in it if i go fast (about 40). How likely is it that it could flip? Right now the 40hp johnson is a long shaft so its slowing it down im hoping to get 50ish mph once i short...
  5. 1970kayhydro

    Can i hook up a tach? 71 40hp johnson.

    The boat has the guage in it can i hook it up to the motor? Also what are the chances that the speed guage will still work? the boat is a 1970 and the water tube part that goes on the out side of the boat was missing but i have one on its way. the tubing to the guage looks to be ok and still...
  6. 1970kayhydro

    Boat is riding at a angle at high speeds??

    1970 kay 11 foot hydroplane 40hp johnson, it's riding at a angle after it gets going. The weight is pretty even but when it get planed out the left side is down. The flat plate just above the prop has a piece missing about 2" right at the end, above the exhaust on the left side. The boat...
  7. 1970kayhydro

    71, 40hp johnson, smoking pretty bad?

    I have a 1971 40hp johnson, i just rebuilt the carb and still smoking. The points and condensers are new also. I am pretty sure the gas is mixed 50/1 properly and no matter how the carb is adjusted it blows alot of smoke and it seemes to be worse when i tank test it and not so bad when i take it...
  8. 1970kayhydro

    How do I know if the timming is off?

    I have a 1971 40 hp johnson, I am not sure if the timming is set right. What would be some signs of the timming being off? Timming advancement?
  9. 1970kayhydro

    boat takes a long time to plane out

    i have a 11' hydroplane with a 1971 40hp johnson long shaft. the motor starts up and sounds as if it is reving up when i tank test it but when i take it to the river it does not want to rev and takes a long time to plane. after it does plane it starts getting short burst of power. i was told it...
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