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  1. Scott Danforth

    Merc 5.7 Keeps Shearing starter bolts

    posts 11 and 12 are contradicting each other
  2. Scott Danforth

    4.3L Mercruiser Milkshake

    It will bolt to the flywheel housing Was the motor built as a marine motor? You will most likely need to fiberglass in new mounts Do you have 4.25" extra in the bilge You will need new exhaust manifolds, a new marine distributor
  3. Scott Danforth

    5.7L MerCruiser Bravo III under water...repairable?

    Suggested reading links 14, 15, 18, 2, 3, 4a, and 4b in that order https://forums.iboats.com/threads/how-tos-and-other-great-information.283508/
  4. Scott Danforth

    5.7L MerCruiser Bravo III under water...repairable?

    It's almost NEVER the transom gasket It is almost ALWAYS a rotten transom
  5. Scott Danforth

    No spark, 91 536

    New still need to be filed Dwell meter will not only tell you when you haved them gapped properly, however will also work as trouble shooting
  6. Scott Danforth

    Mixing Mercruiser 120 ( 1971 ) with Alpha Gen II ( 2000 4.3L )

    You will need to simply swap the 2.5 in where the 4.3 was and use the A1G2 flywheel housing
  7. Scott Danforth

    87 PCM Chevy inboard temp / water pump issue

    You are describing toasting your impeller perfectly Take the bucket, put ice and beer in it. However quit using it like you are Install new impeller, use dish soap or ky jelly to lube When you need to run on the trailer, connect fake lake under boat and turn hose on full. Then start the...
  8. Scott Danforth

    Help!!!!!volvo Penta aq125a inboard aq270 outboard

    Exhaust flap doesn't matter Did you service the points? Set dwell with a meter?
  9. Scott Danforth

    87 PCM Chevy inboard temp / water pump issue

    You must use a fake-lake on a hose with an inboard Or a fresh-water flush fitting You need to replace the impeller you toasted There is no pump in the boat that can draw water. They all only push water When the boat is in the water, the level of the pump is 8" or more below the surface of...
  10. Scott Danforth

    87 PCM Chevy inboard temp / water pump issue

    Only a positive displacement ball & check pump or a piston and check pump can lift water
  11. Scott Danforth

    87 PCM Chevy inboard temp / water pump issue

    The bucket would need to be 8" above the impeller and have a bottom fitting to be able to flood it to prime Again, raw water pump can not suck/draw water any distance You toasted your impeller Your circulation pump could be completely removed and the raw water pump would still pump assuming...
  12. Scott Danforth

    87 PCM Chevy inboard temp / water pump issue

    Raw water pumps do not "suck". They only push. They are a flooded inlet rubber vane pump Unless your bucket is big enough to put the whole boat in it, you toasted your new impeller Always use muffs or fake-lake if on land Your circulation pump circulllates water within the block and heads
  13. Scott Danforth

    87 PCM Chevy inboard temp / water pump issue

    Doubt you will need it. Only issue would be if the bearings and seals went bad
  14. Scott Danforth

    mercruiser 4.3 turns off after 10 minutes

    Check for fuel and spark next time it happens Follow the Thunderbolt trouble shooting guide If your ignition trigger is the original 2-wire version. I would look there. They updated to a 3-wire version almost 20 years ago
  15. Scott Danforth

    Merc 5.7 Keeps Shearing starter bolts

    Then you have multiple problems Find why it's hydrolocked
  16. Scott Danforth

    87 PCM Chevy inboard temp / water pump issue

    No no Circulation pump is a brass impeller version of an automotive water pump. These are GM or Mehling and cost about $80 for an SBC. These almost NEVER go bad Raw water pump has a rubber impeller and is what pushes water from the pickup to the thermostat housing. These are available...
  17. Scott Danforth

    87 PCM Chevy inboard temp / water pump issue

    Not sure where you are looking, however getting the pump direct from Jabsco/Johnson/Shorewood would not be anywhere near $1000
  18. Scott Danforth

    87 PCM Chevy inboard temp / water pump issue

    Find the missing pieces Raw water pump and circulation pump are two different things
  19. Scott Danforth

    Transom savers

    The fishing barge that Dad and I trailered everywhere just used a bungee from trailer to lower unit to keep the 12 hp motor from flopping
  20. Scott Danforth

    Need HP Capacity Help

    If you went up to 70hp, you would make more noise and burn more fuel, however not go any faster
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