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  1. jimmbo

    Black scuff marks on cylinder walls

    It is a genuine OMC Service Manual? Is the Gasket a genuine OMC/BRP part?
  2. jimmbo

    1994 evinrude 140hp v4 cutting out at wot

    There were no Crossflow 140s in 1994, they were discontinued in the mid 1980s, when a 90 degree Looper was introduced
  3. jimmbo

    Stubborn To Start 1979 9.8

    Put the Stat in Now. Engines Break-in Better when they are at the Expected Temperature
  4. jimmbo

    Waterlogged foam?

    No, that will add more weight and put the Engine further back, making it sit even lower. Looking at the Upper Mounting Bolts, they look like they are Tapering Inward, and there appears to be Cracks along the top of the transom Was the Spashwell Partially painted? It appears that way, perhaps to...
  5. jimmbo

    Stubborn To Start 1979 9.8

    Chrysler???
  6. jimmbo

    Prop size question

    In the Early 70s the 140 used a 2:1 drive. The 1.98 while pretty much the same Ratio, reduced the Frequency of repeated Contact Pattern on the Gears, extending their Life Year the Engine is Important, as the WOT Rpm ranges has varied over the past 50+ yrs.
  7. jimmbo

    1967 Evinrude Carb Removal

    Distributor? The Ignition System is located under the Flywheel. I haven't removed the Flywheel when taking the Carb off, unless I was also replacing Ignition Parts on the 1960s 40hps
  8. jimmbo

    Prop size question

    What year is the Engine? What is the WOT Rpm range, and as asked for earlier, what is the Gear Ratio of the outdrive?
  9. jimmbo

    Stubborn To Start 1979 9.8

    Now go hunting for a 68 or a 69, those Years are the Best Looking
  10. jimmbo

    Stubborn To Start 1979 9.8

    What Yrs are the latest 9.8s? Pics Please
  11. jimmbo

    Lower unit gear oil - 2001 Evinrude 150HP FICHT

    Don't use standard Gear Oils, as the Marine Versions have more EP Additive to help the Tiny Gears(compared to Gears in an Auto/Truck Dif) in the Gearcases survive.
  12. jimmbo

    No water coming out of the exhaust on muffs

    180-185 is too Hot for a Raw Water Cooled Marine Engine. You didn't stick an Automotive Thermostat in it at some point?
  13. jimmbo

    Can I put a 28 hp Johnson on my 14' Aluminum Sea King?

    Where I am(Canada), there are NO Laws that make it Illegal to put more Hp on a Boat than the plate recommends. There might be some Issues regarding Insurance, but I always told them the Boat had more HP(sometimes 50hp more) on it than the Plate, and I was never refused by an underwriter.
  14. jimmbo

    Can I put a 28 hp Johnson on my 14' Aluminum Sea King?

    I would keep the 4 stroke, as an Anchor. The 28 would not weigh 170 lbs, I doubt it would even weigh 130. It would about the same as the 35hp below, which was about 122 lbs. It was a 20" model We had 2 14 ft Mirrocrafts, one with a 25, the other had a 35. They were rated for 35hp though
  15. jimmbo

    Stubborn To Start 1979 9.8

    A spark tester is quite easy to make, with a bit of wire, a dry board, a couple of clips, and a couple of nails
  16. jimmbo

    No water coming out of the exhaust on muffs

  17. jimmbo

    no oil after cylinder head recondition

    The Roller Lifter and Cam, really changed that... However, replacing a Brand A, Lifter, with a Brand X Lifter, may complicate it. If the Motor was out of the Boat... Myself, I would tear it all apart, and replace the Bearings, the Timing Chain and Sprockets, and the Cam and Bearings, and the...
  18. jimmbo

    Stubborn To Start 1979 9.8

    Going back to the Original Problem of not being able to start without Copious amounts of Fuel being sprayed into the carbs It does sound like a Fuel or Induction problem. Are you using the Choke? If I remember, the Fuel Pump is integral to the Carb, and there are 2 brands of Carbs used on the...
  19. jimmbo

    Stubborn To Start 1979 9.8

    When you had the Engine apart, I will assume you cleaned the Ring Groves in the Piston. How did you do that? What were the Piston to Cylinder Wall Clearances? Did you put the Rings in the Cylinder, prior to installing them on the Pistons, and measure the Piston Ring Gap?
  20. jimmbo

    Stubborn To Start 1979 9.8

    You're certain the Float is set correctly? Don't go drilling Holes in the Piston, if they did any good Mercury would have already done it Describe your Break-in Process? What did you use to Home the Cylinders? Please don't tell me a Ball Hone... 2 Stroke Cylinder Walls wear differently than the...
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