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  1. K

    Steering helmet pin

    Your helmet is the style that is mounted using 2 socket head screws going through a larger slug that fits into a receiver cavity on the front of the gear housing. The flange on the gear housing that the bolt is screwed into is the earlier 280 style. If the original helmet from the previous...
  2. K

    Where are the rear motor mounts on a mercruiser 120?

    If the bolts are rusted in the core of the rear motor mounts and corroded in the inner transom plate you have a real problem. I have had to use a cutting torch a few times. The area under the bottom of the flywheel housing is where the cut has to be made. Needless to say it gets real nasty by...
  3. K

    Mercruiser 170 - Spark at distributor, not plugs

    Try this, pull the plugs put them on the wires lay them on he manifold, spin the engine. Look if the plugs are sparking.
  4. K

    Mercruiser 170 - Spark at distributor, not plugs

    With the points closed can you force them open by pushing on the rotor shaft? Worn out rotor shaft bushings can cause ignition problems. Even with a worn out distributor the rotor would still contact the distributor cap. Are you getting a blue spark out of the coil wire? What are you gapping...
  5. K

    Mercruiser 170 - Spark at distributor, not plugs

    The spark from coil wire to ground has to be blue and jump at least 1”. If you are using some of the cheap auto store parts that could be your problem. There has to be 12 v at the + or bat side of the coil when in the cranking mode. You need to verify that. NAPA still has good quality ignition...
  6. K

    OMC 1986 Bayliner Capri.

    I can assure you that there will be water in the upper gear case. Take a large screwdriver and just loosen the lower drain screw on the side of the upper gear case. Cost of repair, mucho denaro!
  7. K

    Well it happened. Water in oil

    Down at the bottom of the water jacket is the thinnest part of the block. That is usually where the it leaks at. If you flip it over and pull the pan you will see a rust spot where the hole is. Just as AD said you got your use out of it for 40 years. Quite a few never lasted that long.
  8. K

    496 bravo 3 3000 RPM plus overheat

    I saw the insides of a Bravo where the mating water passages were eroded to a point that exhaust gasses were entering into the incoming water.
  9. K

    496 bravo 3 3000 RPM plus overheat

    If you finally end up going through the hull just tie the drive incoming water to the through the hull with “Y” pipe arrangement.
  10. K

    '87 Scarab 21

    I see you have Captain’s call exhaust. Just curious, when the boat was full throttle was there a difference in top speed & rpm with open or closed exhaust? Nice looking engine and boat. The reason I asked this is the previous owner of my 18’ Donzi with the 383 MPI said it would do 70 With open...
  11. K

    The ole rope in the prop

    Also first disconnect the shift cable from the control box at the engine and check that the bind is not in the control box.
  12. K

    Early EZ Shift outdrive questions

    It probably has full power trim. The transom bolt pattern is the same as well as every thing from the engine to the drive. If you reuse your current engine the only thing that might be slightly different is the wire harness for the power trim. Make sure that the shift cable, gimbal bearing and...
  13. K

    Sterndrive multiple leaks

    If there is oil running down the vertical shaft from under the upper housing you will have to completely reseal the upper and may need a “speedy sleeve “to repair the surface on the lower driven gear.
  14. K

    Early EZ Shift outdrive questions

    Any idea what year the doner boat is?
  15. K

    Exhaust flapper fell down in the exhaust tube

    I would first try to get it by removing the exhaust bellows, with the drive all the way up there should be enough room to reach it.
  16. K

    Early EZ Shift outdrive questions

    Wherever you are hopefully there will be a marine salvage yard. There is one here in the New Orleans area. They take a chainsaw and cut out the area around the gimbal housing after pulling the engine. As stated maybe you can find a rotted Bayliner with a good drive platform.
  17. K

    What reason causes the engine milky oil?

    In addition another source of milky oil could be running without a thermostat where condensation is causing the condition.
  18. K

    Need to replace Chevy 350 long block in boat

    The auto 350 will work but as Bondo said not as good as the marine/truck version. You will need to replace the core plugs with brass ones. Hopefully the current engine has the marine Quadrajet and ignition otherwise the replacement may not perform right and an auto version is not marine...
  19. K

    '86 OMC Stringer Sterndrive...impeller R&R video?

    With the muffs on the drive, remove the hose that brings water to the thermostat housing, start the engine. Does water come out the hose? If so try to hold it back with your hand while someone revs the engine. If you can stop it easily then the pump is installed wrong. If you cannot hold it...
  20. K

    Milky oil?

    Heat up a piece of sheet metal over a fire then put a few drops of the oil on the metal, if the oil just smokes it is good. If it pops and sizzles then water is mixed in it.
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