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  1. jimmbo

    85hp charger speed/prop/rpm concerns

    Unless you are exceeding 45 most of the Time, Normal Duty is probably the Best Choice for your Boat, but you might have to even put it a 1/2" below the Hull.
  2. jimmbo

    Water test on 115 HO etec

    And what is the Manufacturer's WOT Rpm Range?
  3. jimmbo

    1969 85hp starflite, low power and cutting in and out

    Well, as mentioned, Heat can reck Havok on Electronics, regardless of Vintage. It looks like it is mounted on a Heatsink... Is there supposed to be a Thermal Paste between the 2? If you have ruled out all the other Components as being the Problem, and all Connections are Electrically Secure...
  4. jimmbo

    Intermittent spark on 1976 35 HP Evinrude

    Well it is 48 yrs old, maybe when Armature Plate is moving the Plug Wires are Flexing and the Internal Resistance rises, or the Insulation is weak, and the Spark doesn't make it to the Plug
  5. jimmbo

    85hp charger speed/prop/rpm concerns

    Being that the Props you are using appear to have little or no Cup, there a very good chance that having the Engine at that Height, is the reason you are experiencing the Prop losing its bite.
  6. jimmbo

    85hp charger speed/prop/rpm concerns

    Looking at the Pics, I see little, if any Cup, on those Blades. Cupping help the Prop's ability to keep a Grip on the Water if there the Water is not Solid, as in Undisturbed. Where is the Anti-Ventilation Plate, with regard to the Hull Bottom height wise, when it is Parallel to the Keel?
  7. jimmbo

    1969 85hp starflite, low power and cutting in and out

    Okay you verified Spark on One Cylinder, there are 3 others, of which, some components are shared, and others are specific to each Cylinder. That Engine is far older than any of the Engineers ever planned/expected it to last. Heat can play Havoc with Electronics, especially 55 yr old...
  8. jimmbo

    Water test on 115 HO etec

    It is Autumn, and if you prop it Now, or early Spring, you might discover it will lose some Power and Rpms come Summer. Something to keep in Mind.
  9. jimmbo

    Bought a boat yesterday

    Further away from the Water Line, maybe. The Hose connected to it would still have to arc up higher so as to reduce any Bow Splash getting into the Tank
  10. jimmbo

    Water test on 115 HO etec

    The computer is not going to adjust things for a different Pitch. It is simply feeding Fuel and adjusting the Spark, based on a expected Rpm Range under Load. That Load is provided by choosing a Prop that allows the engine to run WOT within that expected Rpm Range
  11. jimmbo

    1960 Johnson Seahorse QD-21

    Same Province as racer
  12. jimmbo

    Wont Start. Johnson 1979 25hp

    There would be some Provision on the Flywheel to hook a Knotted Rope to permit Starting
  13. jimmbo

    Bought a boat yesterday

    Looks a little High up on the Hull to be an Underseat Compartment Drain. I lean to a Fuel Tank Vent
  14. jimmbo

    Got a new toy to test out eventually...

    Rooster Tail is likely due to Engine Height, or Trim. There is a big Difference between the two Props on how the Boat Rides in the Water. The Enertia can lift the entire Hull Vertically, not just the Bow . I have only been in One Boat that didn't perform well with the Enertia, and that was a...
  15. jimmbo

    Merc 60hp 2 stroke identification

    Part # 8M0082880 https://www.marineengine.com/parts/mercury_marine_parts/sn/0D908420/1002201NK/545_120
  16. jimmbo

    Wont Start. Johnson 1979 25hp

    If the Battery is NFG, being "just off the Charger" means Nothing. However, corroded Connections/Cables/Solenoid can prevent Current getting to the Starter Motor. Some basic Electrical Troubleshooting is Due. We had the Rope Start version of that engine. Always started in less than 3 pulls...
  17. jimmbo

    One cylinder, slipped prop, clutch dog

    Can the Ignition System deliver a Spark that can consistently jump a 5/16" gap? What condition are the Coils? Are the Points Clean, and set correctly, and aren't binding?
  18. jimmbo

    115 v4 2 stroke runs rough when warmed up

    2nd Step: Does the Spark consistently jump a 3/8" Gap on all Plug Wires? " they are what the turbojet manual recommended" Turbojet Manual???
  19. jimmbo

    Distributor harness 1976 mercury 115

    Where in Western Canada?
  20. jimmbo

    1994 Mercrusier 4.3l engine compatability

    Myself, I would ditch the Truck Cam, and get the Marine Grind. In my Eyes, 'Close', is good enough for Horse Shoes, Grenades, and Nuclear Weapons, but not Cam Grinds
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