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  1. Scott Danforth

    Primer bulb issue

    Check the carb needle and seat
  2. Scott Danforth

    half closed cooling system for a 1989 4.3 liter cobra.

    San Juan Engineering is now Orca heat exchangers. They may have a kit In not a big fan of Mr Cool A half system for a 4.3 will most likely be a 4-pass 4" x 22" long bundle to a 5" x 18" bundle. The size will depend on the raw water pump flow rate you have available.
  3. Scott Danforth

    half closed cooling system for a 1989 4.3 liter cobra.

    It's generally is not recommended to add a heat exchanger to a used motor, even a fresh water A rebuild where the block is baked, hot tanked and flushed is OK. However I would still run an inline mesh screen on the heat exchanger inlet based on personal experience Used salt water motors will...
  4. Scott Danforth

    What happened now?

    Never turn a Chevy motor from the crank bolt. You will usually strip the threads from the crank before budging the motor. Always use the flywheel or pull the damper and use a crank socket Pull the drive, pull the plugs, see if it turns over from the starter If it does, check the drive if...
  5. Scott Danforth

    Crownline gas tank

    in my 1988 Cruisers (in the sig), the tank was on a tray in front of the motor originally with a bulkhead panel in front . I could pull the tank out with some strapping, however after the restoration work, I had to make a notch in a floor support to get it to go back in as the hose connections...
  6. Scott Danforth

    mercruiser 4.3 overhauling

    the marking the lifters is so you have them rolling in the same position you take them out regarding the rocker arms, you are mixing and matching various generations. you should be using the 1996 and later vortec heads. some light reading...
  7. Scott Danforth

    Crownline gas tank

    since you have the motor removed, get a pic from the transom forward (you can take a pic thru the transom shield) should be able to lift and pull
  8. Scott Danforth

    mercruiser 4.3 overhauling

    The same base motor from GM is used for both
  9. Scott Danforth

    Prop Selection - Bayliner 175

    The 19p was a Solas stainless. The 17p was an unknown stainless that was reworked at Green Bay propeller The 15p was a Michigan
  10. Scott Danforth

    Prop Selection - Bayliner 175

    They should be coffee colored after an hour of run time
  11. Scott Danforth

    Best shallow water river boat

    Use the 14' utility or the kayaks in skinny water
  12. Scott Danforth

    My Skag got worn down, I had a power failure

    If it bothers you, weld 2" back on and go boating If it doesn't bother you, just go boating
  13. Scott Danforth

    Prop Selection - Bayliner 175

    Agree with AD. You are either steam cleaning your plugs from a water ingest issue, or you are painfully lean
  14. Scott Danforth

    Prop Selection - Bayliner 175

    All 3 blades. Tried a 17p 4 blade, couldn't get out of the hole as fast as the 3 blade. Lugged the motor too much. Tried selling it for a while. Tossed it into the fire about 15 years ago
  15. Scott Danforth

    battery volts

    on a lead acid. 12.7 volts is full charge and 12.0 is fully discharged. however the charger/alternator/etc. will put out slightly higher to make sure that the electrons flow to the battery. anything above the 12.7 is considered a "surface charge" and if you leave the battery alone and check...
  16. Scott Danforth

    Prop Selection - Bayliner 175

    15p in a 4 blade is the highest I would consider. adding a blade is like adding 2" of pitch. adding blades and adding pitch both add load to the motor requiring more torque at a given speed. I had 3 props in my 3.0 powered boat (see post #11). and pulling skiers, I still had to have most of...
  17. Scott Danforth

    Prop Selection - Bayliner 175

    You don't have enough motor to spin more than a 15p 4-blade with your current boat
  18. Scott Danforth

    Prop Selection - Bayliner 175

    Drop down in prop pitch Add more motor Put a sand bag up front Add trim tabs
  19. Scott Danforth

    7.4 Gen VI cylinder head gaskets

    a standard felpro marine MLS gasket is what I would run. Not sure I would run the GM gaskets unless its the marine ones.
  20. Scott Danforth

    Prop Selection - Bayliner 175

    FWIW, the largest prop I could ever run on a 3.0 was a 19P on a 1600# 17' long boat. and that was with only 2 people in the boat. most of the time it was 17P for people hauling or 15P for water sports and trolling. not sure there is enough motor to spin a 21p prop unless the hull is a...
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