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  1. jimmbo

    Engine Overheated on Evinrude

    Those old V4s dumped Water out the Idle Relief when running Don't be like that dummy and grab plug wires without insulation on you hands and/or plyers
  2. jimmbo

    Evinrude year

    In the later years of that engine, they did change from the usual 2 coils under the Flywheel, Magneto, to a System that had 1 Coil under the Flywheel and a coil for each cylinder https://www.downloadservicemanuals.com/manuals/evinrude-johnson/wiring-diagrams/18-25_hp_electric_start_1973-76.pdf...
  3. jimmbo

    94 Johnson 115 wet plugs

    Just curious, what brand of Oil are you feeding it?
  4. jimmbo

    1962 Merc 450 restoration ..

    Looks Good Make sure that there isn't any paint to interfere with the Propshaft Bearing Carrier, and Seals
  5. jimmbo

    5.0gi to 5.7 swap

    For me, calibrating a Carb, is far easier than trying to change an ECM program. Too many things to go haywire with the latter
  6. jimmbo

    ‘83 Glastron Sx-190 looking for other owners

    My SX195, which is about 18 1/2 ft long, has a 5.7. It feels okay powerwise, actually a little under powered
  7. jimmbo

    5.0gi to 5.7 swap

    Changing the Jets and/or Metering Rods, is rarely needed, but is routinely done to cover/hide other problems, same goes for all the different Accelerator Pump Delivery Curves that a Holley can be customized with. Where changes need to be made, are a little more complicated. Going to a different...
  8. jimmbo

    4.3 Carb v 4.3MPI

    It has considerably more Torque. I'll take the 5.7 carb over a 5.0 liter FI. And by adding a few more CFMs to the Picture, it will also be making more HP
  9. jimmbo

    Modern Engine Thoughts

    Another is much poorer Hole Shot. 4 strokes aren't as good for Waterskiing, unless you have several hundred Horsepower, pull as hard as a 60hp 2stroke did
  10. jimmbo

    Gear Oil Questions

    Some people will insist that you can use Regular Hypoid Oil in the Gearcase, and others that will say that the Marine Oils are superior. I tend to be in the Latter group. These are small Gears, much smaller than what are found in Vehicle Differentials, yet they have to contend with very high...
  11. jimmbo

    5.0gi to 5.7 swap

    If the ECM was Calibrated for a 5 Liter, it sure is not going to Calibrated for a 5.7, regarding Fuel Flow. As for the Cam, does the 5 liter Cam have the same Duration, Lift, Overlap, etc as the 5.7? What you need to do is get Part List for both Engines and compare, line by line, looking for...
  12. jimmbo

    Inverted steering

    What was the boat at the "Mechanic's" for? So when you turn the Wheel to Port, does the outdrive pivot so the prop end goes to Port or to Starboard?
  13. jimmbo

    Trim on a jet ?????????

    Power Trim is just as Useful on a Jet Drive as it is on a Propeller Drive.
  14. jimmbo

    1964 evinrude fisherman 5.5 running poor!

    Keep revving it to the Sky and soon, you won't have to worry about it any more. Basics.. Compression Test Can it produce a Spark strong enough to jump a 5/16 gap? Are the plugs Clean, and gapped at 0.030"? The carb might need a good cleaning, Float setting checked/adjusted My had one of these...
  15. jimmbo

    94 Johnson 115 wet plugs

    I Know about the 2%, but had never heard of 2.6 oz/gal. Likely cause we used to mix gas and oil in 10 or 20 gal(imp) lots
  16. jimmbo

    4.3 Carb v 4.3MPI

    At least down under, where you are, they have an appropriately named brand
  17. jimmbo

    1968 ish Johnson please help!!

    Cowl is a 1966 I learned to ski behind one, but ours was a 63 Electramatic that had a 66 Cowl on it
  18. jimmbo

    New Starter turns on when battery is connected

    Sounds more like a Hot wire touching the Solenoid Terminal, or a shorted Key Switch, supplying Power when not needed/wanted. Burned out a Starter in 77 on the far side of the lake, when the switch went postal. There was smoke when the Starter got hot
  19. jimmbo

    94 Johnson 115 wet plugs

    Welcome to iboats 2.6 mix per gallon? 50:1 is the Ratio, after Break In. A lot of engine makers would use 24:1 for the first 10 hrs. In the VRO engines, the first 10 hrs were using a 50:1 in the tank.\ Edit: 2.6 ounces per gallon. First time I heard 50:1 stated that way
  20. jimmbo

    4.3 Carb v 4.3MPI

    Vapour lock is having the Fuel vapourize in the Fuel Line prior to the Pump, Diaphragm Pumps cannot move a Gas as Gases are Compressible, while a Liquid isn't. If the Fuel is vaporizing in the Line After the Pump due to Heat, when the Inlet valve in the Carb opens the, fuel bowl is overwhemed by...
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