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  1. Scott Danforth

    Volvo Penta 740B raw water cooling

    bud of mine's company makes a cavitation gun for the navy. it uses seawater and a high-pressure pump. what comes out of the nozzle is a stream of bubbles. as they burst, they explode the barnacles. the video is cool as heck.
  2. Scott Danforth

    Volvo Penta 740B raw water cooling

    on the VP's and bravo's, we recommended a plastic immersion pump, a large tub, pull the impeller and use a set of muffs as the pratice the immersion pump pumps the BB thru the system, and comes back out the exhaust and idle reliefs back into the tub. let it run for a half hour, then dispose of...
  3. Scott Danforth

    Volvo Penta 740B raw water cooling

    no, the copper coolers are the same design as your heat exchanger you added to the engine. at most, you need to defoul them as little critters (barnacles ) tend to grow on the raw water side you should be running barnacle buster once a year as maintenance
  4. Scott Danforth

    Mercruiser 4.3 removing oil from bores?

    boat storage barns are just a covered enclosure. the 19 years of condensation will have coated the interior of the engine a bit. did you pull the valve covers and take a look under them? did you drop a bore scope down the spark plug hole?
  5. Scott Danforth

    Volvo Penta Steering Stiff

    welcome aboard disconnect the cable end and see if its your cable. if so, replace the cable and helm
  6. Scott Danforth

    Elusive Trim Hydraulic Fluid Leak

    its a 34 year old boat that was designed to last 15 years. if this little oil leak is all you have, consider yourself lucky
  7. Scott Danforth

    Mercruiser 4.3 removing oil from bores?

    stored 19 years in a climate controlled environment, or 19 years outside with a tarp over it?
  8. Scott Danforth

    Small engine replacement. LoveJoy shaft connector. How does it remove?

    dial indicator. the lovejoy has a max axial limit of about .015
  9. Scott Danforth

    Fiberglass Repair with big patches? Or fill with CSM and resin?

    if the tub is big enough to have the whole outdrive in the water, then yes. if you attempted to pull water from a tub, you just smoked your impeller. impellers do not pull water, they only push. so they have to be below the water when you start to prime.
  10. Scott Danforth

    Fiberglass Repair with big patches? Or fill with CSM and resin?

    dont use a tub to run an outdrive in it unless you want to toast your impeller. you need to use muffs you cant tell rot by jumping very lightly. you have to make test drills
  11. Scott Danforth

    1990 Mercruiser & BBC 454: Cautions or Concerns

    that is owning any boat. you have to remember, a boat has a design life of 15 years. how its cared for determines the service life, and that can be between 2 years and 20 years. however if you are looking at a 32 year old boat, keep in mind, you may need to do a complete restoration and...
  12. Scott Danforth

    292 inline 6 with prealpha drive for 19.5 cuddy

    this would grenade your motor. there are different balance requirements between the 250 cubic inch and the longer stroked 292
  13. Scott Danforth

    1990 Sea Ray 160, Mercruiser 3.0 with Alpha one gen 1

    I carried 3 props with me in my boat that was powered by the 3.0. a 15p, 17p and 19p, all stainless the 3.0 doesnt have enough torque to swing a bigger prop and pull skiers. so I used the 15p for skiing, and water sports as well as when I was trolling for salmon. the 17p for general use, and...
  14. Scott Danforth

    Volvo Penta 740B raw water cooling

    If you flush, the coolers are fine
  15. Scott Danforth

    1990 Sea Ray 160, Mercruiser 3.0 with Alpha one gen 1

    Welcome aboard For cruising, a 19p For watersports, a 15p or 17p With the 3.0, you run out of engine quickly, so you usually need a prop for every occasion
  16. Scott Danforth

    Fiberglass Repair with big patches? Or fill with CSM and resin?

    Before you worry about cosmetic issues....ask yoursef....is the transom and stringer wood sound, or rotted? Free boats are the most expensive because they need the most work
  17. Scott Danforth

    Marine Power 454 Inboards Few Questions.

    Most high flow remote oil filter kits have 2 filters. Every one I ever used did.
  18. Scott Danforth

    Is my outboard direct fuel injected?

    1987 would be carbureted
  19. Scott Danforth

    got a question about a future V6 to V8 repower...

    Lou.....build a 6.2
  20. Scott Danforth

    1990 Mercruiser & BBC 454: Cautions or Concerns

    SeaRay (owned by Brunswick who also owns Mercruiser) paired BBCs with Alpha drives in 1988-1990. Then they realized their folly after replacing many drives under warranty However more importantly, a 1990 boat is 32-33 years old (2× its design life). I would be suspect of transom and stringer rot
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