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  1. jimmbo

    Can someone please help me to identify what year this is there in no tag with the ser # and it has a reman power head so there's no # on the block of

    If it a Brown Stripe, then it would be an 85, as the Transom Bracket shown wasn't introduced on the V6s till then. The only other year Brown was used was 1984.
  2. jimmbo

    2015 yamaha 75hp too a 115hp

    If the same displacement is used in both motors, quite likely.
  3. jimmbo

    2015 yamaha 75hp too a 115hp

    Yes, unbolt the 75 and replace it with a 115. Even if the Displacement is the Same, there will plenty of Differences to make the additional HP. Adding HP at the Top, pretty much results in a Drop in Low Rpm Torque, so even though the Boat would have more HP, the holeshot will be slower.
  4. jimmbo

    Deep cycle battries and standard car battries

    Deep Cycle Batteries are not designed to repeatedly provide Heavy Current supplies for more than very short periods. I suppose several hooked together in Parallel, would overcome that, then the issue of Equally Charging them configured like that will rear its Head.
  5. jimmbo

    Over prop? How to know?

    No, it was a Carb, nothing to do with FI
  6. jimmbo

    daily music fix

    Crosby was certainly a little bit on the Eccentric Side...
  7. jimmbo

    Over prop? How to know?

    You are referring to the E4ME Q-Jet It had nothing to do with the Idle Needles, those were still on the Throttle Body, usually hidden by covers. The Computer was controlling the Primary Metering Rods using a Solenoid, in response to what the O2 Sensor(s) was telling it
  8. jimmbo

    Deep cycle battries and standard car battries

    The Marine Batteries are a bit more Rugged than the standard Auto/Truck versions. Starting Batteries and Deep Cycle Batteries are engineered for different purposes and operation. While a Deep Cycle can often put out enough Amperage to crank an Engine for a short period, it can't do it for an...
  9. jimmbo

    77 Johnson 140hp

    Which Crestliner? I had a 79 Crusader 550 open bow, I a 84 115 put on it. A couple of years earlier I had a 15ft Invader, which the Hull was a Flip of the fore mentioned Boat. Both boats were rated for 100hp, but I had the Dealer put a bit more on them.
  10. jimmbo

    77 Johnson 140hp

    It is 45 yrs old. 77 was the first year of the 140, and actually the best of them, it has the most finely Tuned Exhaust, the Crankcase Stuffers, and the Highest Compression Heads they used on the 140. Later years had slightly less compression(likely to enable it to survive on the Garbage...
  11. jimmbo

    Boggs down

    Keep revving it up like that in Neutral and soon you might not have to worry about it Bogging when in Gear, or even running for that matter...
  12. jimmbo

    77 Johnson 140hp

    You mention a Cracked Coil. Replace it, see if the Spark Jumps a 3/8" gap on every Plug Wire? Might be a Fuel Tank venting issue.
  13. jimmbo

    Evinrude Big Twin 35

    My Dad had the Electric Start version back in 1972. I haven't seen one since then, and we don't have any Pictures of it, but I certainly remember what it looked like. The Connector was to make it easier to install/remove the Engine as no Wires had to be connected/disconnected under the Cowl...
  14. jimmbo

    Should I buy this Mercury 40 horse?

    Just like buying a Pig in a Poke. Don't be surprised if it a complete waste of Money
  15. jimmbo

    daily music fix

    Michelle Philips was the Eye Candy. Mama Cass had the Voice
  16. jimmbo

    Which Service Manual

    I was simply saying what most of those 3rd party manuals are good for. Anyone who has serviced any of these Engines for any period of time, will not argue that fact
  17. jimmbo

    Which Service Manual

    Good for the Outhouse, not for reading though
  18. jimmbo

    Which Service Manual

    Another option would be to contact Mercury Marine directly
  19. jimmbo

    Which Service Manual

    Contact a Mercury Dealer, give them the Serial # and ask them to order a Factory Service Manual.
  20. jimmbo

    Which Service Manual

    To get either Parts or the Service Manual, you will need the Serial #. An 85 will have the ugly Brown Cowl Decals like this, same for 84. 1980 - 83 had basically the same Decal, but with Blue Stripes, in 86 it changed to sliver/gray for a few years
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