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  1. Sea Rider

    OMC 15 hp 2 strokes overheating

    Find very interesting to have this type of tech conversations as to see the light at the end of the tunnel. A good pic says much more than 1K written words. Will contribute with this pic which says much more that the previous posted ones..LOL!! In this scenario, the severe obstruction was...
  2. Sea Rider

    OMC 15 hp 2 strokes overheating

    Question : Does water boils constantly inside a powerhead for that to theoretically happen ? besides we're dealing with salt not freshwater which turns the science experiment into a useless one.. Made a short investigation, It's not salt layers, crusts, it's pure saltpeter potassium/sodium...
  3. Sea Rider

    OMC 15 hp 2 strokes overheating

    Really ? This well documented post with proven pics will blow your mind off and someone else's too that thinks erroneously that freshwater flushing or saltwater flushing will remove 100% salt layers, crusts already formed or in the process of being formed inside powerhead. Scenario, this OB was...
  4. Sea Rider

    2 Strokes Tohatsu 8 HP Gear Problems.-

    It's a rebadged 8 HP Merc version, the issue is that when the OB is started at neutral the prop spins with thrust. If spinning prop by hand whith OB OFF and geared forward, there's a clak sound when turned left, locks when turned right. At neutral prop locks somewhere, at reverse prop spins...
  5. Sea Rider

    Maxum 28 footer.-

    Been offered a neat condition 2001 Maxum 2800 Express Cruiser with dual 190 HP Merc Inboard engines with 240 metered worked hours. Does anyone have same boat in current use that will share his boating experience with this model. What to look for, flaws, engine related issues... Asking price is...
  6. Sea Rider

    M40D2 guardian mode?

    M40D2, Is this 440 Fryan same exact as yours, it's a tinnie... Happy Boating
  7. Sea Rider

    How Long do Lower Leg's O'rings Lasts ?

    Thanks, but late for that, power head is already assembled. It's consistent as mayonnaise. What's strange is that there is no water path located under lower crankcase seal where seal rests against pan to be a salt water emulsification issue . All water paths starts at a much larger distance...
  8. Sea Rider

    How Long do Lower Leg's O'rings Lasts ?

    Removed power head for third time for a head and exhaust covers final re torque. With just 5 run hours from last re torque the pan area located under lower crankshaft oil seal was found emulsified as in pic. That's way, way less than last time where the round pan portion was full. Question ...
  9. Sea Rider

    Sleep ot Hybernate ?

    If you don't want to shut down any Notebook or Desk PC permanently as will be using them say some hours latter. Which modality is best to use : Sleep or Hibernate ? What's the tech difference between those 2 if any ? Happy Boating
  10. Sea Rider

    Lower Leg Plates.-

    As there is too much upper and lower plates controversy going on the forums as which lower plate dials top water performance have made a fond research at my boating Club about different outboards living there. 3 types were found : Old and New ones being bolt on transom OB’s in which the height...
  11. Sea Rider

    Motor size

    Some issues : There's a great weight difference between a 2 and 4 strokes OB's in the 30-40 HP range. a 40 HP is too much for that given load. A larger inflatable having more hull length, width lying on water will plane faster with a less HP-OB than if a 40 HP is the max rated for. Is it still...
  12. Sea Rider

    How Long do Lower Leg's O'rings Lasts ?

    To clear whatever was built on piston rings, made a 5 minute run geared forward on muffs at constant 2 K while squirting small dosis of Engine Tune UP decarbonizer through carb. When product was totally burned, made a compression test, the engine now has 120 PSI on both cylinders, a 10 + PSI...
  13. Sea Rider

    1987 Honda BF9.9A no Spark

    Welcome to Iboats, Don't ever spray WD-40 on plug tip. If too oily spark will be reduced or not fire at all. If you want to check the spark intensity get yourself a spark tester, the one with a translucent bulb, remove all spark plugs from powerhead, connect tester to each ignition coil...
  14. Sea Rider

    Susy Spark Plug.-

    What's the spark plug type, brand and electrode gap of a 4 stroke Suzuki DF6A outboard ? Thanks in advance. Happy Boating
  15. Sea Rider

    How Long do Lower Leg's O'rings Lasts ?

    Went for a new gear oil change not precisely at 50 metered hours but way less as will hate to find the internal lower leg gearcase flooded with sea water. Bingo, oil came out with a clean mustard darkish yellow color, not the initial blonde yellow color as when gear oil is brand new with no...
  16. Sea Rider

    Should i raise to 41/4 ptp

    You need to play with hole heights whether raising or lowering the OB till this cond is fully met. Check pics. This is the ideal Sweet OB/Transom height Spot for any combo in which the prop achieves its max thrust. See if you can try it out. It's a matter of matching outgoing middle hull...
  17. Sea Rider

    1548 SeaArk with 2015 Merc 25 hp new prop

    How many boaters were on board while achieving 5700 wot revs ? If min-max 5K to 6K is the factory wot range, 5700 wot rpm is pretty good. If plan adding more boaters to the equation will need one less pitch whichever diam the prop manufacturer wants to put to prop. BTW, that 20% drag...
  18. Sea Rider

    Best Gasket Sealer ?

    If in need to perfectly seal a head gsaket between both mating surfaces, the ones without the double side sealer coating OEM ones comes factory delivered with, which aviation brand sealer and type would you guys recommend How about this one : Permatex 80019 Aviation Form-A-Gasket No 3 Sealer ...
  19. Sea Rider

    I swear...

    As summer is around the corner decided to finish all what was long time pending such as : Internal anode height modification, New head gasket and exhaust cover gaskets install, repairing crankcase's side thread with issues. A 2 mm height plain SS washer was added under anode, rising anode...
  20. Sea Rider

    Outboard cavitation

    Blackiron 99, Being a long shaft OB, need to visually determine at which lower leg height is water flow (wf) passing at speed as wild guessing will take to much precious boating time along frustration. Ideal for any OB to achieve the best prop thrust is while water flow at plane is passing...
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