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  1. jimmbo

    blue -v- brown band

    1983 and older 115s would have the Pump in the Boat TNT That is one of the Joys of Mercs for many yrs, as the variations of the Decals were often slight, over the years.
  2. jimmbo

    blue -v- brown band

    Brown was used in 1984 and 85. They dropped the Compression a bit after 83 1982 was the Year Mercury started Prop Rating all 6 cylinder engines However some late 81s might be Prop Rated Any 115 with a Serial Number up to and including 5050763 would be Crank Rated 5050764 and above would be Prop...
  3. jimmbo

    85hp 3 cylinder Force carburetor throttle plates.

    The Butterflies are to all be Fully Closed at Idle. Once the linkages between are tightened, they will all open the same amount, and there is an Stop to limit their opening. Idle Speed is set simply by adjusting how far the Timing is retarded Just out of Curiosity.... What Service Manual are you...
  4. jimmbo

    Help with prop ID (pics)

    That is an Old Prop, it looks likes an Uncupped Prop, and has been rebuilt at least twice
  5. jimmbo

    Awfull time launch & retrieve roller trailer

    deleted
  6. jimmbo

    Awfull time launch & retrieve roller trailer

    One of the front Rollers is missing the Retainer
  7. jimmbo

    Need to determine best prop for weird setup

    The 1.51 was used with the 5.7. It is what my Motor has Going from a 21" 4 blade to a 17" 3 blade, should have shown an increase of at least 1000 rpm Top Speed, would only be a couple of Mph difference
  8. jimmbo

    Older motor

    1960 was the Only year that the 75 used that Cowl Shape.
  9. jimmbo

    Need to determine best prop for weird setup

    Totally redesigned Engine
  10. jimmbo

    Need to determine best prop for weird setup

    Not true. Until 1969 almost all of Evinrude/Johnson V4s used tiny 10" diameter low pitch Props spinning very fast(exceptions were the 1958-59 50hp, and later 60hp which was offered with an Heavy Duty Option, using the older 50hp gearcase, and the 66-68 100hp), while Mercury used slower turning...
  11. jimmbo

    Just thought I'd share a nice photo.

    30 yrs ago, I remember going down a Highway, and a Car was pulled over on the Shoulder. I saw a guy crossing the Road, Camera in hand, so I looked over and saw a couple of Bear Cubs, I also noticed Mama Bear, over on the side of the Road where he had parked... I just kept driving...
  12. jimmbo

    90 Johnson 60hp off idle problem

    Reeds usually last many Thousands of Hours, rarely breaking/wearing out, however they are Prone to Damage from unnecessary Handling/Touching
  13. jimmbo

    WOT

    When the engine is running within the Specified WOT Range, then you know it is corrected Loaded, and has the proper Airflow and Timing Advance Curve from Idle to WOT. Several Props with different Pitches, Diameters, Rake, Cup, and # of Blades, not even mentioning Brands and/or Models, will...
  14. jimmbo

    1979 40hp lower unit stuck

    Beware that in the Late 80s, the 2 cylinder 35hp had a Higher WOT Rpm Range than the earlier 2 cylinder 40 did. There might have been some differences in Carburation(size and Jetting), Porting, Reeds, to name a few things.
  15. jimmbo

    New issue cropped up on my transom/bunk position!

    I have seen Hundreds of AL Boat on Bunk Trails with no Keel Benders, and very few hull problems. Those that did were usually being used as Cargo Haulers, and were loaded too darn Heavy
  16. jimmbo

    Will this boat fit on that trailer?

    One Trailer is likely a Welded Bunk System, not easy to Adjust, and the Other is an Adjustable Trailer. The Photos really show No Details. 'Close' may work for Horseshoes, Grenades, and Nuclear Weapons, but not for Trailer fit...
  17. jimmbo

    What do these knobs do?

    A Cable and Pully Steering System would have used a Fitting that was fastened with a Bracket(shown in the second pic) that used a Twist Pin through the Hole where the Blue Arrow is Pointing The hodge podged Conduit Clamps have a Ball Coupler(red arrow) that was used to hold Tow Pylon rods to a...
  18. jimmbo

    Green people destroyed another fantastic fishing area.

    I think the Zebra Mussels did the Damage
  19. jimmbo

    Wealth preservation,....

    I believe in the Adage: If there's a Will, I wanna be in it...
  20. jimmbo

    Wealth preservation,....

    Especially if the Old Lady knows about it...
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