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  1. Scott Danforth

    5.7L rebuild and upgrade to vortec heads

    I agree, you're down on power with your compression numbers
  2. Scott Danforth

    Air Fuel Ratio Carb Tuning

    @Scott06 I have about 5/8 of an inch between the marmon clamps and the end of the ring. So I would need a mini O2 sensor with an m10 thread or smaller, or I have to bore thru the inner and outer water jacket, weld up the inner and outer tubes to the stainless bung Not enough room to run a...
  3. Scott Danforth

    Pedestal Seat Base

    I would check the shavings, if good, fill the existing holes with epoxy and wax the screws and install, then go boating Or index the base If you want washers and nuts, there is most likely foam you would have to contend with
  4. Scott Danforth

    Vaping

    Dad died from complications caused by his smoking. Enough for me to caution anyone in luding you @redneck joe and AC
  5. Scott Danforth

    Air Fuel Ratio Carb Tuning

    Just catching this thread now. I am toying with pulling my H-pipe cross-over and modifying it for an AFR meter unless I can find a thread in small diameter Wide-Band O2 sensor where I can drill in-situ...... as I am currently trimming my AFR by tweaking the air bleeds and the emulsion bleeds on...
  6. Scott Danforth

    5.7L rebuild and upgrade to vortec heads

    you shouldnt see anything in your oil. however a simple oil test will tell you. a well maintained marine motor will go 5000 hours plus
  7. Scott Danforth

    Water in bilge? Bilge pump runs too often.

    base engine stuff you buy from GM or one of the GM suppliers marinization stuff like drive specific kits, you buy from the OEM things like deck hardware, radios, etc. stuff that wont sink your boat or strand you if it fails can be bought from a chinesium source.
  8. Scott Danforth

    £20million superyacht goes up in flames

    Aluminum does burn. once the Diesel or Jet A on the yacht gets going, the aluminum will burn right down to the waterline. aluminum dust is highly explosive
  9. Scott Danforth

    I need a couple pictures of a SBC powered AQ 290

    Volvo Penta 855373 per the parts breakdown for an AQ271c or AQ311
  10. Scott Danforth

    I need a couple pictures of a SBC powered AQ 290

    Get the correct molded hose. There is a 150 degree loop at the top of the hose, then the hose runs along the oil pan rail to the front of the engine and does a zig-zag between the belts and to the raw water pump.
  11. Scott Danforth

    5.7L rebuild and upgrade to vortec heads

    You are overthinking it. The SBC is the Mr potato head of the motor world All SBC heads fit all standard deck blocks from 1956 to today. Just get the right combustion chamber Any 5.7 liter 64cc vortec heads will work New fully assembled vortec heads are $900, good reconditioned used are...
  12. Scott Danforth

    Vaping

    Google popcorn lung
  13. Scott Danforth

    5.0 Mercruiser Cutting Out While Underway

    Is your distributor trigger have 2 wires, or is it the new 3-wire design,m
  14. Scott Danforth

    1983 beachcraft

    Check the stringers for rot Replace the raw water pump. I would do a complete kit Inspect the splines on all 3 pieces of the drive shaft Keep an eye on the gear lube
  15. Scott Danforth

    1983 beachcraft

    Welcome aboard. Unless you love working on obsolete boats with obsolete drives, I would recommend looking for a newer boat without an OMC drive.
  16. Scott Danforth

    5.7 Vortec Runs Great On Land but Bogs Under Load in Water

    Any electrode that is white is either not getting fuel, or has water in the cylinders
  17. Scott Danforth

    Volvo Penta Belt Tensioner

    welcome aboard the tensioner should be spring loaded. either its bad, or improperly installed
  18. Scott Danforth

    Mercrusier 350 MAG MPI - RPM issue under a load

    could be a head gasket leak to the cooling water jacket that only leaks under load, could be the start of a manifold leak, could be the start of a head crack leak. pressure test the cooling water jacket to be sure
  19. Scott Danforth

    Oil filler cap filter

    its probably a breather cap. do you have a nipple for running a hose to the spark arrester?
  20. Scott Danforth

    Mercrusier 350 MAG MPI - RPM issue under a load

    send the injectors out to be cleaned and flow tested water does not automatically mean hydrolock
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