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  1. jimmbo

    Slow etec 50 hp

    Welcome to iboats What is the WOT range for your engine? If you are currently above the range, more pitch might give you a small increase(between 1/2mph and 1 1/2mph) in speed, along with lower rpms and slower Hole Shot. That is assuming you were putting higher pitched Viper. Changing to a...
  2. jimmbo

    Need prop help with new boat

    Rev Limiters don't come into effect until a few hundred Rpms above the top of the recommended Rpm Range
  3. jimmbo

    Adding 100+hp. Would you re-prop ?

    A boat in that size range, will respond much better with the Larger Displacement, and get on plane and be a 1/4 mile down the Lake, while the SB is still raising the Bow.
  4. jimmbo

    Disconnecting the fuel line, let engine burn gas ?

    Doesn't Negate that is not wise to do so
  5. jimmbo

    1984 75 HP Mercury

    Some, but not all Nozzles, may have what is an Emulsion Tube in them. Since both of your carbs are the Same, either they are supposed to be like they are, or someone has messed with both. I think it is the Former. I can't find it as a Service Part.
  6. jimmbo

    1973 65hp Triumph Temperature Probe

    That would be the Thermal Switch for the Overheat Horn. It is not cheap, about $170. Lower down on the Head there is another Thermal Switch, with 2 wires, that one is for the Thermo Electric Choke
  7. jimmbo

    1984 75 HP Mercury

    Here is the Diagram for your Carb. What part are you referring to?
  8. jimmbo

    Modern Engine Thoughts

    Kind of like a Chevy vs. Ford thing
  9. jimmbo

    Hydrofoil/Whale Tail Good or Bad

    The only Advantage is for the Makers, the Distributors, and the Retailers, as it is a Product with large Margins
  10. jimmbo

    Modern Engine Thoughts

    The only people who make money on a Repower, 4 stroke or 2, are the ones selling the new Motor. Repowering can be considered Maintenance
  11. jimmbo

    Modern Engine Thoughts

    I suspect that having a 4 Stroke with the Crankshaft Vertical creates some problems regarding having the Oil being flung around in the crankcase, especially in the lower part of the Case.
  12. jimmbo

    Modern Engine Thoughts

    No, it is 4 Strokes that suck
  13. jimmbo

    Plane issue

    At 5 mph, there isn't even any water being Disturbed by the Boat. Even at 10mph, the bow isn't going to rise much, it at all on a 22 footer. If the engine is tilted up for Shallow water, I guess the Bow might rise a bit, when power is applied
  14. jimmbo

    Hydrofoil/Whale Tail Good or Bad

    I am one who Swore at them and still do. If they really did something, the Engine manufacturers would be equipping their motors with AV Plates that size and shape
  15. jimmbo

    Looking for a Definitive Answer On AQ Drive Oil

    I know a lot of People who sold Evinrude/Johnson Outboards and OMC I/Os, who never knew that at one time there were Boats sold under all 3 brands
  16. jimmbo

    1984 Evinrude 25hp mounting

    Your Strap across the Clamp Screws is placing a Rotational Force on the Transom, and the block of Wood is the Bearing-Pivot Point. Set the Lock/Release Lever to Lock, Grab the Gearcase, and Yank away from the boat and see if it remains on the transom I wouldn't trust it at Trolling Speeds, let...
  17. jimmbo

    Modern Engine Thoughts

    The Rotating Assembly of a 2 Stroke, will always be much simpler than any 4 Stroke. Once the Emissions Thing was applied to Outboards, the complexity of things added to the Engine became complex, for both designs of Engine. Newer engines run very nicely, and require little attention from the...
  18. jimmbo

    Looking for a Definitive Answer On AQ Drive Oil

    Probably just someone at Volvo who didn't know the History of the Product Line very well.
  19. jimmbo

    Disconnecting the fuel line, let engine burn gas ?

    Our 57 35hp powerhead was full anti friction bearing
  20. jimmbo

    Modern Engine Thoughts

    I miss the sound and sweet smell of all the 2 Strokes in the early hours of the Day, actually I miss them all hours of the Day when I am at the Lake. I do find a serious decrease in Hole Shot with the 4 Strokes for any given Horsepower, when compared to the 2 Strokes of the past. To me, an...
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