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  1. Scott Danforth

    292 inline 6 with prealpha drive for 19.5 cuddy

    If you plumb as a full system, your 292 is putting out about 200hp. You will run hot when water temp is over 75
  2. Scott Danforth

    292 inline 6 with prealpha drive for 19.5 cuddy

    Here are pics of both a full system and half system. Your exhaust manifold would need to be new or risk plugging up the non-cleanable side of the HX There are no sizing tables. There are proprietary calculations. However a 4" x 18" 2- pass bundle will handle about 15000 BTU per minute (a...
  3. Scott Danforth

    89 Volvo Penta AQ271C ignition or carb, maybe something else

    did you get fuel pressure?
  4. Scott Danforth

    1985 sea ray 250 cc fisherman

    yes, the rotten bits are structural yes its repairable. however the rot is more extensive than you see. it will be in the transom and bulkheads as well no, you cant afford a shop to do the work for the following reasons: its about 500 hours of work and shop rate is $125-$200 an hour the...
  5. Scott Danforth

    complete Alpha one Gen one retrofit into older boat.

    skip the tires all together. put two 2x4's on the ground and run the hubs directly on the 2x4's jack the front of the trailer up until the aft end of the trailer is touching the ground
  6. Scott Danforth

    Mercury 110 (1971?) - common repair items on this engine?

    you have a 52 year old motor that was designed to be around for 15 - 20 years. impellers are a common issue. there are two diameters of shaft (and two different impeller part numbers). so you need to know which diameter prior to buying. the pre 1978 motors have steel shafts (not stainless)...
  7. Scott Danforth

    boat will startup and then shut down

    Check the key switch
  8. Scott Danforth

    overheat mercruiser

    You are burning up your impeller with your process and you are risking freeze damage The factory manual clearly states Change oil/filter Drain all water (pull plugs and hoses). Then if you want to add anti-freeze, use a funnel and fill from the thermostat housing
  9. Scott Danforth

    292 inline 6 with prealpha drive for 19.5 cuddy

    Your exhaust manifold rust will plug the heat exchanger. The block will be good
  10. Scott Danforth

    overheat mercruiser

    No. Your raw water pump moves 20 GPM at 20 PSI. There isnt an electric wash down pump large enough What are you doing that is burning your impeller? Are you trying to suck from a bucket or something else? Always use muffs unless the bucket is big enough the whole boat sits in it and the...
  11. Scott Danforth

    292 inline 6 with prealpha drive for 19.5 cuddy

    Your exhaust manifold looks crusty. You would want to run a new one when running a heat exchanger. Did your motor get boiled out?
  12. Scott Danforth

    Radon and seal concrete under tub

    The soupy mix is what the PVC pipe is for. May need an elbow
  13. Scott Danforth

    Radon and seal concrete under tub

    Not sure I would do expanding foam. You would hear a pop and find your tub a foot higher
  14. Scott Danforth

    292 inline 6 with prealpha drive for 19.5 cuddy

    There are water pumps with a 1" port on the inlet almond side the 1-3/4" port
  15. Scott Danforth

    292 inline 6 with prealpha drive for 19.5 cuddy

    Is your lower thermostat housing aluminum or cast iron? I would pick up an aluminum one and weld on a 1" diameter section of tube as a hose bung
  16. Scott Danforth

    292 inline 6 with prealpha drive for 19.5 cuddy

    A bit small. Just the two ports?
  17. Scott Danforth

    Radon and seal concrete under tub

    How big is the access? Any way to mix up concrete and use a combination of PVC pipe and a small hoe to fill most, then maybe use epoxy as a cap.
  18. Scott Danforth

    292 inline 6 with prealpha drive for 19.5 cuddy

    Got a picture? Have dimensions? You will need about 2 quarts of expansion volume
  19. Scott Danforth

    Radon and seal concrete under tub

    30x60" x 1" thick is 7.8 gallons May be able to mix up 4-5 gallons and flood the area
  20. Scott Danforth

    292 inline 6 with prealpha drive for 19.5 cuddy

    Looks like a 2-pass It would be fine for a half system Would have to run calculations to see if it will cool a full system Will sketch two schematics Do you have an expansion/overflow/de-areation tank?
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