Recent content by jimmbo

  1. jimmbo

    35hp choke linkage hookup?

    Perhaps around the Choke Control Shaft #24.
  2. jimmbo

    Exhaust manifold discovery?

    A lot of 4.3 Owners have discovered the hard way, they needed to drain the Intake...
  3. jimmbo

    Exhaust manifold discovery?

    It is not just converted Car/Truck Engines. Any Inboard Engine, that has Raw Water Cooling, needs complete draining, and sometimes RV Antifreeze added to be sure. Even those that have a Heat Exchanger, and can run Antifreeze in the Block, still have to drain the Manifolds and Raw Water Loop
  4. jimmbo

    1978 Johnson 140hp running rough. Need advice

    Shows there was something wrong with old Carbs, but if they had been functioning properly, they would have delivered even better top end performance
  5. jimmbo

    1978 Johnson 140hp running rough. Need advice

    Smaller Bore? That will cost top end Hp, but will help Hole Shot
  6. jimmbo

    Oil 4 stroke Mercury 115hp

    A 1 litre 4 stroke spinning 13,500 won't hold together many hrs.
  7. jimmbo

    Oil 4 stroke Mercury 115hp

    My Boat will do 67-68mph at 4800 rpm, I don't like to run it(5.7) for long at that Rpm cause it will shorten it's Lifespan Considerably. The Engine that came in the Boat lasted about 110hrs. It ran those 110 hrs without any Oil Filtration, and sounded like it had a Solid Lifter Cam in serious...
  8. jimmbo

    Oil 4 stroke Mercury 115hp

    There is a Spec, FC-W for 4 Stroke Marine Engines, just as the TCW-3 for 2 strokes. However that Spec is a Minimum, the low Bar for Oil Performance. I know that for Decades, the Outboard Engine Makers Oils, exceeded the TCW-* Standard, whist a lot of 3rd Party Oils met it, a few also Exceeded...
  9. jimmbo

    Oil 4 stroke Mercury 115hp

    One of the Oil Companies, but they refine/blend it to Mercury's Specs and uses an Additive Package that is also Specific to Mercury's Specifications...
  10. jimmbo

    18ft Boat Launch with RWD Suburban

    Come for the Food, stay for the Show...
  11. jimmbo

    18ft Boat Launch with RWD Suburban

    The only Full Size GM Cars that got the LT1 were the 94-96: Buick Roadmaster, Cadillac Fleetwood, Chevrolet Caprice and Impala SS
  12. jimmbo

    18ft Boat Launch with RWD Suburban

    That's not nice, those, illegitimates, probably couldn't launch a boat either
  13. jimmbo

    18ft Boat Launch with RWD Suburban

    The Ramps have always been a great source of entertainment...
  14. jimmbo

    18ft Boat Launch with RWD Suburban

    Told this Guy, to use the other Ramp, not this one which is only good for Canoes...
  15. jimmbo

    18ft Boat Launch with RWD Suburban

    I launched on this more than once with using a Car with the Boat and Trailer weighing in at 3500lb. Never had any issues
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