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  1. J

    Over prop? How to know?

    it was electronically controlled and it was a carb...
  2. J

    Over prop? How to know?

    scott...respectfully... It was a 1987 chevy Monte carlo SS...with the high output 305....with a rochester 4bbl carb with a mixture control solenoid mounted at the top of the carb....it was considered a hybrid bridge between a real carb and fuel injection...It worked the two idle needles.. I...
  3. J

    Over prop? How to know?

    yeah...just trying to help the OP....then things get...twisted..... it was stated that OB's have specified idles in their manuals for in gear, in water, in neutral, etc....the answer is not necessarily.....that's the truth....
  4. J

    Over prop? How to know?

    tried to be respectful to you....but...nooo... that didn't work....did it....
  5. J

    Over prop? How to know?

    furthermore....I had an '87 Monte Carlo with a rochester 4bbl. carb that was computer controlled using throttle body injection ....CONTROLLED by the ECM..... that's how ecm's can control a carb...... jesus...
  6. J

    Over prop? How to know?

    word salad..... why do people like you get on the internet and just wanna argue..huh? I did exactly as you said.....went out to my boat.....got my 2021 merc. 115 hp CT's manual......looked up, took pics of, and posted here the official and all idle specifications....there are NO specifications...
  7. J

    Over prop? How to know?

    well...yeah...ECM's control engine parameters through modules that operate solenoids that open close, turn on, off valves, switches...and assorted mechanisms.....
  8. J

    Over prop? How to know?

    there is no idle rpm in gear specification for my engine....those are the only ones.....it doesn't matter for mine....it is ECM controlled... and..here is an 05-11 merc outboard repair manual..... the lower hp engines have separate neutral/trolling speeds..they are not ECM controlled.. the...
  9. J

    Over prop? How to know?

    so I did.... ok...I did...here it is........doesn't matter...
  10. J

    Over prop? How to know?

    not doubting you, just ask'n......I fully understand water exhaust creating back pressure at the exhaust manifold possibly affecting idle.... My motor is a 2021, .computer controlled idle......I have the all the manuals and paperwork that came with the motor....Curious, so I'll see.... I have no...
  11. J

    Over prop? How to know?

    actually, I was responding to dingbat's post....as kindof a question...
  12. J

    Hydrofoil for pontoon?

    honda might have a long shaft conversion kit for your motor....
  13. J

    Over prop? How to know?

    I idle in neutral when checking idle speed (like a car)...I understand if in gear idle speed is lower when in water...but not when in neutral, right?...
  14. J

    Hydrofoil for pontoon?

    lol...just trying to help....I went through 4 props when propping my pontoon with the new motor....and I kinda knew what I was doing....it's a boat...
  15. J

    Over prop? How to know?

    yep...at least get that rpm verified....idle on my new 115 merc and the original 60 hp merc is around...680 ?... trying to remember....definitely not 500 or 1200...... you need that rpm to be accurate before solving other problems...
  16. J

    Hydrofoil for pontoon?

    that's a wooden transom?....so this pontoon is a homemade one? How big are the toons? practically all of the commercial pontoon boats are equipped with "long shaft" motors so that the prop has minimal cavitation/ventilation issues due to the prop being deeper. All of you're descriptions and...
  17. J

    Over prop? How to know?

    how do you know the replacement tach is right? And just assuming the original gauge was wrong isn't the best way to troubleshoot a suspect rpm. Did you know that tach gauges have to be set to the charging impulse of a particular motor? There is a selector switch on the back of the gauge.......
  18. J

    facebook and all the misinformation

    and it is beginning too, isn't it?🙄 not on or never have been on any of the social medias. I participate in this, a vintage motorcycle, anothe pontoon boat site, and volvo forum....( kicked off a vintage stereo forum...cancel culture at work)..... you tube definitely comes in handy....just have...
  19. J

    Need another Motorcycle...

    burros...yeah.....they had then running wild in Oatman, Az....Rt 66.... didn't have the girls though...
  20. J

    Need another Motorcycle...

    yep..that's the boat! I bought the '03 harley because ...well...the hype. Never had a big bike, was a gold wing guy.....but nonetheless. And, a great bike. Plus my girlfriend liked getting accessories for it. However, around 35,000 miles it developed some noise in the bottom end. Dealer said I...
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