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  1. jimmbo

    Correcting gear ratio with prop size

    You gotta do what ya gotta do😉
  2. jimmbo

    Alpha drive for a V8 whats the ratio?

    It would have to be a very light hull to use a 1.5 on a 5 liter, otherwise props in the 14 - 17 inch pitch would be needed. The 1.5 ratio was more commonly used on the 5.7
  3. jimmbo

    Correcting gear ratio with prop size

    It will be going faster than what the GPS states when you are going against the current.
  4. jimmbo

    18 hp johnson

    Did you verify that the Pin/Key that links the Impeller to the Driveshaft was in place? Also the Grommet for the watertube in the pump housing needs to be there
  5. jimmbo

    primer bulb not doing anything...

    Is this even an OMC motor, it looks more like a Force?
  6. jimmbo

    primer bulb not doing anything...

    The carb is vented to the Atmosphere, so pressing on that bulb, any air from from it would be vented by the bowl vent.
  7. jimmbo

    primer bulb not doing anything...

    So for it to work that way, the Carb is vented thru this primer thing? A choke works so much better
  8. jimmbo

    Aftermarket carbs?

    What temp of stat did you order?
  9. jimmbo

    primer bulb not doing anything...

    Is the primer thing getting fuel to it.?
  10. jimmbo

    Aftermarket carbs?

    If the engine has trouble running at speeds below 1000 rpm, then you have some Troubleshooting in store for you. First thing is a Compression Test. Post the numbers Can the Spark jump a 3/8" Gap on all plug wires? Is the Timing set properly? Is the Choke unwinding fully, allowing the Fast Idle...
  11. jimmbo

    No forward until I unplug the wires from the solenoid?

    I gave my earlier comment, cause the link you gave showed a Johnson Control, and being that he would be dealing with an Evinrude Control, though electrically the same, they certainly have little Resemblance to each other
  12. jimmbo

    1984 J90 HP .060" over. Why not?

    If a Ring End is going to catch on a Port, a Chamfer is not going to make any difference.
  13. jimmbo

    Correcting gear ratio with prop size

    Only if runs are made in opposite directions over the Exact same Distance, as 5 mph current becomes a 10mph difference between the directions when using GPS
  14. jimmbo

    How do I see if my jet ski is cooling itself

    My I/O doesn't pee water out, it however does dump large amounts out of sight. I have to rely on a Gauge.
  15. jimmbo

    Correcting gear ratio with prop size

    I would Not put my faith in GPS speedometers on a boat. They will measure speed across the Bottom of the Lake/River, but not speed across the water, as they fail to take any current into account
  16. jimmbo

    No forward until I unplug the wires from the solenoid?

    The OP has an Evinrude, which uses a different Control, with a Push Button Switch for Shift Control
  17. jimmbo

    No forward until I unplug the wires from the solenoid?

    Welcome to iboats When power is removed from the Solenoids, a Spring inside the Propshaft shifts the Gearcase to forward. The Solenoids are there control the flow of Oil, and it's Pressure is what shifts it out of Forward, into either Neutral or Reverse. It sounds like power is being sent to...
  18. jimmbo

    Alpha drive for a V8 whats the ratio?

    They are close, but keep in mind there is another drive, next to it, and that difference, however slight, may result in issues
  19. jimmbo

    1996 Evinrude 40hp - Will not idle, 6mph WOT

    Running on the Muffs is a lot different than running with the boat in the water. Examine the old plugs carefully. Any Cracks in the Insulator?
  20. jimmbo

    Alpha drive for a V8 whats the ratio?

    No , if one drive says 1.47 and another says 1.5, they are not the same
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