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  1. jimmbo

    $2500 boat

    Some of the Mercury Oils don't stink quite as much. I know the OMC/BRP Oils, can be smelled a Block or Two away, very irritating stench
  2. jimmbo

    Need a New battery ,got more for less at Wallyworld....I think

    And which metals are you using for Electrodes on the Spuds?
  3. jimmbo

    Anyone use AGM Batteries for Starting on VP?

    The charging systems on I/Os for the past 50 yrs are well enough regulated, and AGMs pose no issues, unless you discharge them too low, then the Fun begins, trying to get them to accept a Charge. Using AGMs on Unregulated Charging Systems, like those found on many Outboards is a No-No, as these...
  4. jimmbo

    What are the best ST225/75R/15 boat tires?

    A few years ago, Carlisle was a Tire that you couldn't even put on a Wheel without having it fail
  5. jimmbo

    Need a New battery ,got more for less at Wallyworld....I think

    I have had 2 Optima Red Tops, both failed, went back to wet cells. The Optima brand is marketed/distributed by Interstate, at least in Canada
  6. jimmbo

    Just thought I'd share a nice photo.

  7. jimmbo

    right prop

    A very worn engine is never going to run very well. With the Compression Numbers you posted, I doubt it will even start/run when on a Boat in the Water. Perhaps all the rings are stuck. Tilt the engine up as far as it will go and secure it up. Get some Mercury/Quicksilver Power Tune or BRP...
  8. jimmbo

    right prop

    A picture of the Cowl can help a lot in determining its Yr, sometimes the engine is the same year too
  9. jimmbo

    right prop

    The Timing should not need Setting or even Checking. OMC used to put a bit of Glue/Adhesive on the Adjusting Points just to discourage People from messing with them, as most Tinkerers have no clue as to what they are Changing, and then can't remember how far they changed it, making it difficult...
  10. jimmbo

    Need a New battery ,got more for less at Wallyworld....I think

    Do you guys live in Warm/Hot areas? Batteries are more likely to fail without Warning, in Hot Weather, than in Cold Weather.
  11. jimmbo

    Need a New battery ,got more for less at Wallyworld....I think

    For my Cars, I just go to Costco, keep the Receipt, and if there is a Hiccup in the first 4 yrs, just take it back, get a Refund, then buy a New One
  12. jimmbo

    determining trailer hitch height

    Does the Trailer have Brakes? Does the Trailer have more than one Axle? If the Answer is no, to those questions. then an inch, inch and a half off level isn't critical If the Trailer is a Single Axle with brakes, then the Tongue should be level If the Trailer has 2 or more Axles, then then the...
  13. jimmbo

    determining trailer hitch height

    Welcome to iboats The A frames are usually on the same Plane as the Tongue Put a bubble stick on one of the Trailer frames and see if it level, of course the Trailer and Tow Vehicle have to be on Level Ground. You can't just level the Trailer, measure the Coupler Height, and then measure the...
  14. jimmbo

    Mercury 115 2+2

    It should fit. However, I am not a 4 or 5 blade fan, 3 is the Maximum number of Blades I would ever look at. And all the boats I or my Family have ever owned had 3 blade Props, except for the 5 1/2 which had a 2 blade. And the 25hp, 35hp, 40hp, 90hp, 115hp, 150hp, and current 260 I/O all pulled...
  15. jimmbo

    Need a New battery ,got more for less at Wallyworld....I think

    The Battery that came in my boat in 2002, was an Interstate M24, Starting Battery, never let me down. In 2017, 15 yrs later, I took it down to the local Interstate Battery Distributor, and asked them to check it out. They looked at me like I was on some serious Meth, or Cocaine when they checked...
  16. jimmbo

    Prop sizes and pitch

    4.25" gearcases were used on mid power(a long and torturous list to try and write out) OMC outboards and Stern Drives, and on Mercury Older Inline >60cubic inch 4 Cylinder and inline 6s, and some of the older smaller I/Os The 4.75 Gear cases came out on the Larger Merc I/Os back in the 60s, and...
  17. jimmbo

    Upgrading Gen 5 VP V8-300 (300HP) to a V8-350 (350 HP)

    To get more HP, either Rpms and/or, Volumetric Efficiency has to increase, in most cases, both. There might be a Timing change, but these engines can only handle so much advance before they start Detonating. If more fuel is added, then the Injectors may be different. It is so much easier to get...
  18. jimmbo

    right prop

    Any damage to any of the Blades on the 20". There shouldn't be that big of change between 4" pitch. I could accept a 1000 rpm difference, but not 2000
  19. jimmbo

    Mercury 115 2+2

    Those motors don't take Kindly to being run above 5800. 10" Pitch? That would be for pushing something like a Tugboat Do what racer said.
  20. jimmbo

    Upgrading Gen 5 VP V8-300 (300HP) to a V8-350 (350 HP)

    Have you checked all the parts in the Valve Train? Are the Heads the same? What about Induction System? Do the 2 engines have the same WOT Rpm range?
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