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  1. Scott Danforth

    Merc 4.3 Quench Distance

    salt and minerals come out of suspension at about 145 degrees, and that will extrude hone your water passages and crust up the heads. hence the 140F T-stat used for decades since the builder doesnt know what water the motor will be run in. if pure, clean fresh water, then yes, 160F you are...
  2. Scott Danforth

    4.3 Mercruiser 94 vs 98 interchangeability

    easy method: unbolt complete 1994 bobtail. bolt in complete 1998 bobtail where did the 1998 motor come from? some light reading: https://forums.iboats.com/threads/complete-history-of-the-4-3-liter-with-casting-numbers.693935/
  3. Scott Danforth

    Rec gas prices???

    yep, roughly 3% reduction in power using E10 vs E0 or 3% less economy.
  4. Scott Danforth

    Name for connector “nut”(?) for fuel line to fuel pump nipple

    Any good hydraulic shop has fittings
  5. Scott Danforth

    Merc 4.3 Quench Distance

    No need to run 91 at 9.3:1 140 T-stat is normal for a carbed raw water cooled motor Have your machine shop upgrade the seals
  6. Scott Danforth

    Hi all, newbie here sharing my fresh project

    I would be suspect of the painted wood everywhere. that was not a proper restoration.
  7. Scott Danforth

    Mercruiser 4.3 carb weep

    but did you punch the monitor?
  8. Scott Danforth

    Total boat electrical refit - looking for advice

    why not. thats how the battery switches work. they draw and charge thru the switch
  9. Scott Danforth

    Total boat electrical refit - looking for advice

    10 feet cable run, so 20 feet total? or 10 feet apart and 15 foot cable run or 30 feet total. measure the total path the cable will be installed. multiply by two. that is total cable run. with your 70hp OMG, and assuming 25 foot total run, I would be comfortable with 2 gauge
  10. Scott Danforth

    Thinking of buying a Maxum 2400 SCR. Thoughts?

    remember, starting in the early 00's Bayliners and Searays under 25 feet came out of the same Brunswick plant in mexico. and if the boat was sold in Europe, it came out of the Poland plant. in the 90's they were different plants
  11. Scott Danforth

    AQ290 Y-Pipe corrosion repair / replacement

    I wouldnt try to weld in-situ. takes less than 45 minutes to pull the drive and the motor
  12. Scott Danforth

    Merc 4.3 Quench Distance

    cometic makes the best head gaskets....... PERIOD. MLS is preferred remember, stock motor with vortec heads came with flat tops with the 4 valve reliefs
  13. Scott Danforth

    Boat TLC questions

    just google carling switches and switch covers. companies like pacer and a few others offer laser engraving of the switch covers. you can even get them on fleabay. https://www.ebay.com/itm/174881754311 https://newwiremarine.com/product/15-switch-cover-kit/...
  14. Scott Danforth

    Smoke from the Alternator!

    if you let the magic smoke out. you have to take it in to an alternator shop to re-pack it with more magic smoke.
  15. Scott Danforth

    Trim Backing Material

    most boat interior substrates today are PVC board or HDPE (starboard) to get the bends, most likely PVC and heated with an oven then clamped in a mold to get the shape. can also use a heat gun.
  16. Scott Danforth

    Total boat electrical refit - looking for advice

    you are going to need some long and heavy cables from each battery to a battery switch. depending on your motor and the length of the boat, to combine the two in the front with the one in the back for a load at the back (starting the motor), you will need to have some really beafy cables. lets...
  17. Scott Danforth

    Boat TLC questions

    if the dash is plastic, the chaulkiness is from the loss of oils in the surface and the plastic is breaking down. I would use what you have as a plug to make a mold to make new ones out of fiberglass regarding the switches, if they are carling, just pop off the actuators and buy new ones...
  18. Scott Danforth

    Merc 4.3 Quench Distance

    Best you can do is go with a thinner head gasket
  19. Scott Danforth

    Name for connector “nut”(?) for fuel line to fuel pump nipple

    Fuel system is SAE flare fittings
  20. Scott Danforth

    first time boat

    Aluminum boat with outboard
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