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  1. jimmbo

    Evinrude big twin 40

    Oh, you have calibrated Tachometer Ears...
  2. jimmbo

    Evinrude big twin 40

    You need to be running between 4000 - 5000 rpm, preferably closer to 5000. Any Idea what the Pitch is on that Prop?
  3. jimmbo

    1978 Johnson 140hp running rough. Need advice

    They certainly not my Favorite Item either, but many times I have removed them on Carbs that the Owner insisted were spotless, and found a pile of Gum/Varnish/Dirt hiding behind them with no way to get out. On the Carbs with fixed Idle Jets, Settings like the Float become Critical, as well as...
  4. jimmbo

    1978 Johnson 140hp running rough. Need advice

    Did you take the Carbs off, and clean out all the Passages, including any that are covered by little Disc Plugs? Those would need replacing so, Carb Kits are needed. Are the Floats correctly Set. Is the Fuel Pump providing enough Fuel. Once reinstalled the Sync between the Carbs and Spark...
  5. jimmbo

    1968 Johnson 65 hp VXL-14B No Spark On Any Cylinder

    Point Gap for that Ignition is 0.010"
  6. jimmbo

    How can I make my Tracker 40 HP faster?

    Is the Hull Clean, and Smooth? The Motor looks like it had a Lot of Growth on it. So does the Boat Motor: What are the Compression Numbers? Can the Spark Jump a 5/16 Gap on all Cylinder? Timing and Spark Advance Correct? Is the entire Fuel System Clean and Functioning Properly
  7. jimmbo

    Prop barrel slightly smaller than the gearcase

    That was the Mercury 'Chopper'
  8. jimmbo

    Prop barrel slightly smaller than the gearcase

    While there are instances of using the smaller Hub on the Large Case, it is not done on Recreational Boating. The Props would need to be engineered for it. The one you are showing, is not
  9. jimmbo

    1995 Force 120 will no longer idle

    How long ago did you do a Compression Test? That was then, you NEED to know what the Numbers are Now. If 1 & 2 are out, they share a Carb, as do 3 & 4. 1 & 4 also have Seals on the Crankshaft that can leak. Did you fiddle with any Adjustments on the Throttle Linkage, as that can really mess with...
  10. jimmbo

    Prop problem

    If the Blades Flex, the Magnitude is very small, in the range of Fractions of a Millimeter. Put a Pair of Vise Grips on an Aluminium Blade, and see how much Flex you get...
  11. jimmbo

    Prop problem

    If there is any flexing of the Blade it is likely in the Range of 1/100" on an Aluminiun Prop. That bit about Blade Flex has sold Hundreds of Thousands of SS Props
  12. jimmbo

    Prop problem

    I have hit many things, but only when I had a SS prop on did I end up with a Bent Propshaft
  13. jimmbo

    Spark Plug suggestions!

    You would have to consult AC Delco to be certain
  14. jimmbo

    One last try

    A Jump Start is Different than a Standing Start, unless you are standing on a Dock. Dock Starts and I never got along, be them sitting or standing
  15. jimmbo

    Spark Plug suggestions!

    That was they were speced for. Back then there wasn't a Conventional Alternate. Use of a Conventional Plug actually alters the Ignition Timing Slightly by placing the point of ignition closer to the Piston. I like the Surface Gap Plugs and had a Set last over 14 yr at about 600hr on them, and...
  16. jimmbo

    Spark Plug suggestions!

    The AC plug equivalent was V4OFF. I preferred them to the Chumpions
  17. jimmbo

    Converting Roller trailer to bunks for my Starcraft 161

    That Trailer looks like it uses a lot of EZLoader Hardware from the late 70s. Is there an EZLoader Distributor near you?
  18. jimmbo

    Cars you should have kept.

    Hmm, it rode like a Car should, the 455 could move it fairly well, especially if the Factory 2.56:1 rear axle was changed to a 2.73 or 2.93. Mine had the Heavy Duty Brake Option. As for Rust, it took over 10 yrs before any appeared on mine. Of course we didn't have Muttonheads Salting the Roads...
  19. jimmbo

    Cars you should have kept.

    What didn't you like about it. I had one, it was a decent Car, even ran with the Engine Bay jammed full of Snow, after a night in late April 85. Was running when I took the Pic
  20. jimmbo

    Cars you should have kept.

    My 1st Caddy. 86 Fleetwood Brougham, with the D' Elegance Option Have had 5 more since, but they certainly weren't/aren't as Comfortable. The Ex had a Caddy before me, and the seats in hers were even nicer
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