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  1. jimmbo

    1954 evinrude big twin electric 25 help

    Likely insures Oil is supplied to the Bearing
  2. jimmbo

    1954 evinrude big twin electric 25 help

    A Boat is a Hole in the Water, that you continuously pour Money into BOAT is an Acronym for. 'Break Out Another Thousand'
  3. jimmbo

    74 mercury 850

    If it just the Insulation that is cracking and splitting, a can of Liquid Neoprene, can be used to reinsulate the Wire(s). If the copper itself has sheared, then a splice might repair it, but sometimes you just have to replace the Unit in its entirety
  4. jimmbo

    I think I will go electric for my next new car ...

    The ICU hasn't broken the 40% efficiency mark yet...
  5. jimmbo

    1954 evinrude big twin electric 25 help

    I found in an old service manual that prior to 1957 the system was 6 volts
  6. jimmbo

    1954 evinrude big twin electric 25 help

    A 6 volt system would have Battery Cables that almost look like they belong on a Bulldozer, while the ones on a 12 volt system are smaller
  7. jimmbo

    1954 evinrude big twin electric 25 help

    I think 57 was the first year for 12 volt
  8. jimmbo

    I think I will go electric for my next new car ...

    So happens when the batteries start getting Low, does the vehicle slow down and Impede Traffic?
  9. jimmbo

    I think I will go electric for my next new car ...

    Likely Lithium Ions waiting to Combust Spontaneously
  10. jimmbo

    NEED INFO.

    Reeds had some differences too. This is one case/example where the are no differences in the Block/Ports, but that doesn't mean the Port Timing is the same between the engines
  11. jimmbo

    I think I will go electric for my next new car ...

    In the winter, range will be all of 20-25 km. Then a 10 hour wait to go home
  12. jimmbo

    Mercruiser greatly overpropped, need advice

    While it can be spun that fast without flying apart too soon, older engines may have used different Cam Grinds and 4800-5000 might be out of their intended Rpm range, as well if the Intake and Heads are restrictive, there is nothing to gain by over revving it past the 4600 mark. In the 70s, OMC...
  13. jimmbo

    I think I will go electric for my next new car ...

    1700+ Lithium-Ion Batteries(not the ones in the pic), not the most Stable kind of Battery, and prone to Spontaneous Combustion.
  14. jimmbo

    75 3 cyl running on 2 cylinders

    Bad upper Crankshaft seal perhaps
  15. jimmbo

    Trailer questions for vintage Glastron Tri-hull

    Excellent.
  16. jimmbo

    Mercruiser greatly overpropped, need advice

    If the tach is accurate, then you are over propped by quite a bit. However, you engine might not be putting out its Rated Power, for many reasons. So, a Compression test is in order, Is the spark advance working? Is the initial Timing correct? Is the Throttle Cable adjusted so the carb is...
  17. jimmbo

    Converting to carburetor from mpi 350 mag

    If the Engine is putting out 300 hp with EFI, swapping to a Carb is not going to give much more. If it is putting out 260hp, then the potential for close to 30 more hp is there.
  18. jimmbo

    Converting to carburetor from mpi 350 mag

    Edelbrock has Marine Manifolds for the SB Chevy Holley has several Carbs that will work. My preference is the 650 Spreadbore. I don't know if the Ignition Advance is provided by the ECMs which are fried, or is Independent. You might have to get a Distributor that has it's own advance.
  19. jimmbo

    Exterior vs interior plywood

    Calgary Stampede? They beat horses, and other animals to Death, as part of Family Entertainment
  20. jimmbo

    Running boat on land with no prop?

    AV plate is below the Pump, and the pumps work much better if Primed, which means submersion
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