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  1. Scott Danforth

    OMC 2.5L milky oil after short time

    also check your fuel pump. a failed diaphragm would fill the crank case with fuel
  2. Scott Danforth

    Engine help

    the floor is the LAST thing to rot on a boat. if you have to replace the floor, you need to pull the drive and motor, then do a gut-n-restore
  3. Scott Danforth

    Waking up a '93 Johnson 200

    see post #2, and #4
  4. Scott Danforth

    Engine help

    first, welcome aboard regarding your 1998 boat. the MCM stands for Mercruiser Marine the 5.0 means your motor is a 5.0 liter V8 about 220hp now, being a 1998 Bayliner. you will want to seriously look for rot in the stringers, transom and deck. bayliner boats in the 80's and 90's were not...
  5. Scott Danforth

    Is my boat polyester or epoxy?

    Home depot does not sell proper marine coatings. Neither does rustoleum
  6. Scott Danforth

    fast inflatable

    max HP on the Nov 360 (12') is 40hp. anything more than that, you will kill yourself https://novurania.com/deluxe-series-360/
  7. Scott Danforth

    What would you put in a small outboard repair kit?

    cell phone and boat US towing membership
  8. Scott Danforth

    Likely cause of compression loss in cylinder 1

    this could cause rusty valve seats or bent valves or broken valves the fix is to remove the head and have it serviced.
  9. Scott Danforth

    Why do they make 12 point sockets and wrenches?

    'nuff said
  10. Scott Danforth

    Likely cause of compression loss in cylinder 1

    there is no "likely cause" you need to do a leakdown test to determine what is the reason here are possible reasons (not in any particular order) leaking exhaust manifold causing rusty valve or valve seat (if so, other valves may be close behind) broken rings hole in a piston from detonation...
  11. Scott Danforth

    3.7 L 170 188 190 224ci mercruiser

    lets not. its been rehashed to death. however for some reason the search function isn't pulling up the past lists. assuming you have all the updates done over the years...... larger heat exchanger, exhaust elbow change, etc. so much easier and cheaper to pull the motor and drop in a proper...
  12. Scott Danforth

    Cracked spark plug porcelain-timing?

    are you looking used or looking new? if you are looking new. buy the new ones that have been modified for proper seals and screw in studs. thats about $900 thru GMPP. you can also get them thru Summit Racing if you are looking for used. any good machine shop, especially ones near an oval...
  13. Scott Danforth

    Cracked Block???

    the first of a few hundred thousand would be my guess https://forums.iboats.com/threads/frozen-and-busted-blocks-in-texas.742470/#post-5642840
  14. Scott Danforth

    1986 power head source

    would help to know where you live. plenty of rebuilders in every major location.
  15. Scott Danforth

    Fuel burn with 5.7 LX mercruiser, 24' Boat

    the beauty of the carb is it will flow only what the motor needs. on top of that, keep in mind the 4.3's get 600-650 CFM carbs, the 5.0's get 650-700 CFM carbs, the 5.7's get 700-750 CFM carbs and the 7.4's and 8.2's got 800-1050 CFM carbs your fine on the carb
  16. Scott Danforth

    OMC 2.5L milky oil after short time

    Any 3.0 1990 or prior will work
  17. Scott Danforth

    Frozen and busted blocks in Texas

    There are 580,000 boaters in Texas. Not a single one of those boats were winterized....... Since about 250,000 of those boats are I/Os and only about 50,000 are moored..... There are about 200,000 motors that have suffered a thermal declination related phase-shift inspired block busting event...
  18. Scott Danforth

    Cracked Block???

    if you didnt drain all 5 drain locations (intake manifold t-stat cross-over, block drains and manifold drains). expect to have a busted block...... and exhaust manifolds regarding home-owners insurance, that is between you and the insurance company.
  19. Scott Danforth

    OMC 2.5L milky oil after short time

    I would never trust the manifold myself. only way to test the block is to pressure test it, or take to a machine shop and mag-particle it.
  20. Scott Danforth

    Cracked spark plug porcelain-timing?

    wait a minute.....back the truck up. generally stock 305 heads have too small of valves for a 350 and have too small a combustion chamber to run on pump gas without the motor detonating like teenager boys at their first peep show. what head casting do you have? very specific. if you have...
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