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  1. J

    Prop pitch for underpowered boat

    I have a 1978 fiberglass 17 ft cc wellcraft, bought a used 70 Johnson 2 stroke for it and it only is getting to 3600 rpms and 17 mph. Tested everything on the motor and everything runs good with it. Talked to a couple people and came to the conclusion that the boat is too heavy for that motor...
  2. J

    Johnson 70 2 stroke only reaching 3500 rpms at WOT

    Boat starts and takes off fine just won't go over 3500 rpms. Carbs are fully opens at WOT, good spark, good compression, tried a new power pack and that wasn't it. Prop is the correct size according to marine shops around my area. No idea what do to nex, buddy says it maybe the stator but I'm...
  3. J

    Prop pitch/diameter question

    I have a 2000 2 stroke Johnson 70 hp on a 17 foot center console Wellcraft. Wide open throttle only gets me to 3500 RPM and it only pushes the boat around 16 mph. The prop that is on it now is a 13 3/4 x 15. I have no idea if this is even close to being the right prop for this set up because...
  4. J

    Motor bogging out after about 5 minutes of WOT

    I have a 1995 Johnson 115 2-Stroke, takes a little choking and priming to get if started but once it is started I can turn it off and it will start right back up with no problem. The problem is when it is at WOT after a couple minutes it will slowly start losing power until it goes down to about...
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