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  1. jimmbo

    Replaced prop with the "same" spec prop. Loss of bottom end.

    To complicate it more, add Progressive Pitch vs. Constant Pitch Exhaust Venting, as in Hubbed vs. Nonhubbed
  2. jimmbo

    Nobody fishing?

    I only do that with Frozen Pizza
  3. jimmbo

    1973 Mercury 115 2 stroke engine questions

    A 73 115, has, I believe 2 Fuel Pumps in Series, each with 2 chambers. Not complicated and easy to rebuild. By the Mid 70s the Fuel System consisted of only One Pump, completely redesigned, and for a while was mounted on the Cowl Pan on the Starboard Side, it was later relocated to the Port...
  4. jimmbo

    Replaced prop with the "same" spec prop. Loss of bottom end.

    Where the Cup is on that prop increases the Rake and Rake can really help a Prop maintain its Grip on the Water My 3 props, 2 are RAKERs, the other Mercury Enertia, all have lots of Rake and Cup One of the problems with Stainless Props, is that they are pretty tough, and don't sacrifice...
  5. jimmbo

    10r77a rich lean adjust

    Sounds like a Lean Sneeze, richen it up 1/8 turn and try again Did you verify the Sync between the Carb and the Spark Advance, when you put the carb back on?
  6. jimmbo

    What size motor to get for my boat?

    Does the Hull have a HIN? On a Tin Boat, it is usually on a metal strip rivieted to the Starboard side of the Transom. Last 2 digits reveal the Yr
  7. jimmbo

    Replaced prop with the "same" spec prop. Loss of bottom end.

    I can't find any reference to OD 12 20 on Solas site. Was that prop new or a rebuilt?
  8. jimmbo

    1975 25hp Evinrude

    Replacement of the Seals, under the Water Pump, and for the Shift Shaft.
  9. jimmbo

    1975 25hp Evinrude

    A leaking Lower Unit would not be leaking at the top of the 5 inch Extension. have you done a Sniff Test on the stuff doming out of the Drainage Hole? If the stuff leaking out stinks to High Heaven, it is likely Gear Oil
  10. jimmbo

    What size motor to get for my boat?

    I will assume 16' length and 54", Beam or Transom width? What kind of Boat? Utility, Pram, Runabout, Canoe?
  11. jimmbo

    Replaced prop with the "same" spec prop. Loss of bottom end.

    A 19 with Cup is different than a 19 without Cup. Some will say it is like adding an Inch or 2, but is a bit more involved/complicated than that Somewhere on that prop, the Dia and Pitch should be shown
  12. jimmbo

    Evinrude Mariner 6 HP 1965 Model 6502, 6503 3 fin prop

    You're correct Michigan did make some for the pre 66 motors 14'-16' Boats- Light Loads AM430 3blade 7 x 6 12'-14' Boats-Light Loads AM433 3blade 7 1/2 x 7
  13. jimmbo

    Replaced prop with the "same" spec prop. Loss of bottom end.

    OD 12 22. Could that be code for 12" Dia, and 22" Pitch? The original prop don't look like it had any Cup, OMC didn't start putting cup on its AL props until around the mid 80s. The Solas, has some Cup on the Blade Tips
  14. jimmbo

    Nobody fishing?

    I still catch Fish. At the Supermarket I get someone to toss a box/bag of Fillets to me...
  15. jimmbo

    Nobody fishing?

    I quit fishing the day my father told me I had to clean what I caught. I was 14 at the time. I the ensuing 49 yrs, I have never have a Fishing License, and have only cast a line once. After I saw a fish jump while I was steering while my cousin fished, I grabbed a rod and cast near the jump. I...
  16. jimmbo

    Water flow

    Depending on how old the Impeller is, and/or if it has been run dry? An dry brittle Impeller with vanes about to break can still move a lot of water.
  17. jimmbo

    better to be at the low end or top end of RPM?

    Normally I cheer when a 4 blade is ditched and replaced by a 3, but on a Pontoon, a 4 blade 14 x 12 may have been better when loaded down
  18. jimmbo

    Replaced prop with the "same" spec prop. Loss of bottom end.

    Convergence Ring is also missing
  19. jimmbo

    Videos as attachments?

    Test
  20. jimmbo

    Can the upper mount screws be tightened without removing the powerhead

    I wouldn't recommend it. Gaskets should be replaced, as they are often damaged on Disassembly, and even if not, they have done their Compressing the first time they were used
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