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  1. Scott06

    Boat hit 200 degrees engine temp

    What brand was the offender? Just so folks don’t buy it …
  2. Scott06

    Top end speed

    Define long periods of time … I have run both of my boats (especially the 3.0) between 4-5k towing tubes skiers etc for extended periods Of time 3.0 Lasted 25 years still had great compression (145) when I sold it ran great. On my seventh season on a 5.0 and hit it the same way full boat...
  3. Scott06

    1991 carburated 4.3 fuel pump output.

    No that is not how an antiphon valve works. It is supposed to prevent the tank from siphoning out into the bilge in the event of a fuel line leak, hence why it is located right on top of the tank … yes there is a cracking pressure like a check valve u reference but that is not the purpose of it
  4. Scott06

    Quicksilver ?

    Yes I just did my bellows kept the bearing that came with kit on the shelf and left the perfectly good bearing in place
  5. Scott06

    Exhaust coming out below bellow

    If the exhaust bellows aren’t in water then the boat isn’t in the water …gas fumes are another issue On the trailer my old boat with a 3.0 was louder than my current boat with a 5.0 the water is the muffler…
  6. Scott06

    Exhaust coming out below bellow

    They are holes cast into transom housing so at idle the exhaust doesn’t have to push out 2 ft of water to propeller hub. No adjustment or replacement is needed it’s completely normal
  7. Scott06

    Quicksilver ?

    Agreed only replace if it’s bad /rough. My 2004 still has original graspable bearing. To op nothing wrong with the sealed bearing . If either one gets wet it’s done for …
  8. Scott06

    Hard starts after sitting for a week or so

    Sorry you have to adjust the linkage such that when u pump the throttle it closes all the way maybe 1/16” gap When it warms the coil will open the choke flap completely vertical . The linkages can get corroded and gummed up the heating coil doesn’t consistently work etc
  9. Scott06

    Hard starts after sitting for a week or so

    If choke is only closed till there is a 1/4” you have to loosen up the element and linkage so it does close fully . You should be able to twist it with some effort U pump the throttle to set the choke ( close it ) and power is applied when the engine runs eventually heating up the choke coil...
  10. Scott06

    Top end speed

    Not likely you need more power to go faster as jimbo laid out I had a similar size boat with 3.0 for many years. Was reliable fuel efficient and easy to work one , but speed was not its game. I used 4 blade Michigan vortex props for low end grunt spend many an hour towing kids at 4k rpm Best...
  11. Scott06

    Moved motor from ski boat to pontoon what prop should i change to???

    Might work but I would think a 9 would raise it 1200 rpm or so vs current 15” … still too low and lugging
  12. Scott06

    Moved motor from ski boat to pontoon what prop should i change to???

    Not sure what the recommended wot rpm of your engine is. Would assume 5500 Or so I think based on the fact your current prop is a 15” pitch you need like a 9” pitch, which is really low. You may need a different gear case to push a pontoon as based of the numbers given I don’t think you can get...
  13. Scott06

    Water leak to the bilge from transom please help

    If you can i would keep it on a trailer vs leave it in the water, use it this summer and fix over winter. in theory you Keep an eye on it if u leave in the water but that would worry me Unless there is someone to watch it daily….then make sure your bilge pump works and you have a charger for...
  14. Scott06

    Boat hit 200 degrees engine temp

    Use OEM merc impellers , read a lot of comments like this where rubber separates from shaft sleeve… i assume yours was aftermarket?
  15. Scott06

    1987 MerCruiser 3.0 Flywheel size

    Yes 14” flywheel was part of move to single rear main seals. If the OPs engine is original it will have the smaller flywheel. I think 1990 (engine manufacture year) was cut over date
  16. Scott06

    Which carb kit please?

    https://www.carburetor-parts.com/mercarb-carburetor-kit they also sell brass floats to replace foam ones that are fragile .
  17. Scott06

    2015 Mercruiser 4.3L TKS - Engine stall after 30 minutes; Unable to restart at 1/4 throttle

    What do spark plugs look like ? Agree sounds fuel or carb related.When it happens look to see if fuel comes out of accelerator pump nozzles when throttle is pumped.
  18. Scott06

    Lost trim gauge and water temp indications

    The trim sender wires come out of transom and go into the engine harness and make their way up to the helm. The trim limit wires go directly to the trim pump
  19. Scott06

    early 70's Mercruiser 165hp inline 6 w/ MC-1 drive not going into gear (sometimes)

    I would think testing the shift cable by removing it from the shift plate and operating it - does it go smoothly with two fingers, would also remove the drive and make sure the shift shaft is swiveling freely look at how the shift shaft turns on the drive - the angle to make it into gear. Might...
  20. Scott06

    Camshaft Replacement on Vortec 4.3L 262

    https://www.ebay.com/p/1594440008
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