Recent content by jimmbo

  1. jimmbo

    79’ Evinrude 70 Bogging

    It is easy to see if the Throttle Valves are fully open, by looking down the Carb Throat. A check of the Link and Sync will verify proper Carb Opening, in relation to Spark Advance. That needs to be checked and if needed, adjusted any time a Carb is taken off.
  2. jimmbo

    1987 mercury 75

    The 3 engines share the same Displacement. HP differences are usually more than just a different Carb, Porting and Exhaust Tuning among other things, are almost always Different.
  3. jimmbo

    Black scuff marks on cylinder walls

    I thought it was pretty smooth for a V4, hardly shook at all.
  4. jimmbo

    Black scuff marks on cylinder walls

    No Back Pressure, while on the muffs. Running it in a tall Test Tank, or mounted on a boat in the Water, might be more Revealing...
  5. jimmbo

    Black scuff marks on cylinder walls

    Possibly a lot of Oil is Pooling in the #4 Crankcase, Check the Oil Recircuit Lines
  6. jimmbo

    83' 115hp Mercury, prop slip

    It is the One in the Avatar
  7. jimmbo

    Black scuff marks on cylinder walls

    I asked, simply for insight, if a Factory Manual says to put it on Dry, then it should be put on Dry. 3rd Party Manuals can be all over the map on things like that. As for your Rant...
  8. jimmbo

    Critters in My Boat

    A few bowls of Ethylene Glycol should take care of them. Gonna take care of some Squirrels that chewed the Hood Blanket of my Car
  9. jimmbo

    Just thought I'd share a nice photo.

    Nasty Creature, should be made Extinct
  10. jimmbo

    83' 115hp Mercury, prop slip

    I replaced the Gasket twice(with Sealer). When it started leaking the 3rd Time, the Dealer ordered me a new Cover n/c. I put it together Dry, and no more leak. The Inline 6s Never had a Thermostat. They did have a Passage that allowed the Heated Water to get very close to the Reed Blocks thus...
  11. jimmbo

    Just thought I'd share a nice photo.

    There is a lot of Shear with that interface. Was that a Brass Gear? What Metal was the Worm?
  12. jimmbo

    Just thought I'd share a nice photo.

    Would a Lubricant, with more EP Additive have helped?
  13. jimmbo

    Black scuff marks on cylinder walls

    It is a genuine OMC Service Manual? Is the Gasket a genuine OMC/BRP part?
  14. 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
  15. jimmbo

    Stubborn To Start 1979 9.8

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