Quick Question on Berkley Drive
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Quick Question on Berkley Drive

  1. #1
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    Default Quick Question on Berkley Drive

    Just picked up a 1987 hardin jet boat. I am completely new to the jet boat world. I just had the motor overhauled. As far as the pump, I noticed a small amount of oil leaking from the caulk on the bowl. I went to berkley's site and they said I should fill the bowl with oil every 100 hours. Then they said that as long as there is water in the bowl, the oil is not a huge issue. It is best to have the oil there for running the boat out of the water. 90 weight gear oil is what they recommended. Can anyone confirm that this is correct? Do I need to try to patch the tiny leak? Should I worry about water mixing with the oil?

    Any input would be greatly appreciated.

    Thank you...

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  3. #2
    Is it Summer Yet?! SoCalKev's Avatar
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    90 weight is correct. Take off the two little square plugs on the back of the bowl(be gentle they usually are plastic)
    Pump the gear oil in one side until it starts to seep out the other side. Don't worry when you see water come out at first- when there's fresh oil pumping out the other side, screw in the fittings and have a beer- you're done!
    Sanger Super jet in Progress

  4. #3
    Boat Nut sleekcrafter's Avatar
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    the oil you see at the calk line is likeley from the inside of the hull, the caulk joint has failed. Gas and oil deteriorat some silicones over time, easy to check for leaks....add water to the bilge... tilt the nose of the boat up...and watch for water leakage.
    Upper Midwest Power Boat Association
    DRAG BOAT RACING UMPBA #926


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  6. #4
    Senior Member 74glencoe's Avatar
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    It is best to have the oil there for running the boat out of the water.

    Any input would be greatly appreciated.

    Thank you...
    Never run your jet without it being full of water, take the driveline out.
    Boating is nothing like cocaine, boating is much more addictive and results in bigger parties!

  7. #5
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    Default re caulking pump area and under boat

    What caulk do I use to re caulk the hull to the metal suction area? I have 5200 from 3M, but it does not say metal.

  8. #6
    Senior Member lbhsbz's Avatar
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    Quote Originally Posted by jasonram2500 View Post
    What caulk do I use to re caulk the hull to the metal suction area? I have 5200 from 3M, but it does not say metal.
    I just use regular clear bathtub silcone from HomeDepot Marine. Some guys like the marine stuff but it's a pain to remove next time you have to take it apart.

  9. #7
    Senior Member EVILFORCE's Avatar
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    Quote Originally Posted by lbhsbz View Post
    I just use regular clear bathtub silcone from HomeDepot Marine. Some guys like the marine stuff but it's a pain to remove next time you have to take it apart.
    Maybe there is a reason it is hard to get off. Maybe it is sticking and doing it's job. Use the good stuff. Not the stuff for the bathtub. Your bathtub dont run 70 mph with the torque of a motor and flexing. Just what I think. No one listens to me anyway.
    No Fool Like A Old Fool is there?

  10. #8
    Senior Member Fonz69's Avatar
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    Quote Originally Posted by EVILFORCE View Post
    Maybe there is a reason it is hard to get off. Maybe it is sticking and doing it's job. Use the good stuff. Not the stuff for the bathtub. Your bathtub dont run 70 mph with the torque of a motor and flexing. Just what I think. No one listens to me anyway.
    I hear you loud and clear

    I would use the permatex "right stuff" in the aresol can or any other engine sealer as it will would up better to the oil and gas that will eat away at it again in your boat

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