Identifying jet drive

Discussion in 'Jet Drives' started by Tonka, Mar 11, 2010.

  1. Tonka
    Joined: Mar 2010
    Posts: 2
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    Location: Australia

    Tonka New Member

    Hi all
    I was wondering if anybody would be able to help in identifying my jet drive.

    I have been told it is a Berkeley STYLE unit, but not a berkeley unit.

    It sits in the water nice but at around 2500rpm it is only doing about 10 kph
    then if you put more throttle into it the revs hit about 5500rpm and the boat does not move. It sounds like the impellor is cavitating or something. The previous owner had the jet unit rebuilt in january.

    The motor is a 351 cleveland.The boat is a 18.5 fibreglass bayrunner made in the 80s.

    Also does anyone know if there is a gearbox you can attach to this set up.

    I have only just bought this boat and is my first jet boat, any info would be greatly appreciated


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  2. rasorinc
    Joined: Nov 2007
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    Location: OREGON

    rasorinc Senior Member

    If that is a Berkeley jet made in California then it was made before I was born across the bay. (1942)
  3. Tonka
    Joined: Mar 2010
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    Location: Australia

    Tonka New Member

    Berkeley style jet so a copy of one is what i was told, and someone in Melbourne Australia may have been making them
  4. Ski Jet
    Joined: Nov 2013
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    Location: Australia

    Ski Jet New Member

    It's been a long time but just checking whether you identified your jet and what you did with it?
    This is a Ski Jet, manufactured in Springvale, Victoria circa 1970's.
  5. Mr Efficiency
    Joined: Oct 2010
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    Location: Australia

    Mr Efficiency Senior Member

    I'd imagine anyone calling their product a Ski Jet today would face a court battle to have it registered !
  6. Barry
    Joined: Mar 2002
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    Barry Senior Member

    It might be a Dowty. I had seen a Dowty in about 1971 prox and it had a square steering nozzle housing with the same type of additional vertical fins in the stream. But cannot be sure.
    Why do you want to attach a gear box to it?

  7. Ike
    Joined: Apr 2006
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    Location: Washington

    Ike Senior Member

    Sounds like the impeller is shot. Replace it. It simply isn't pumping any water.
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