Impeller clearance specs on a 733 Hamilton

Discussion in 'Jet Drives' started by mrtoybox, Jan 25, 2009.

  1. mrtoybox
    Joined: Jan 2009
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    mrtoybox New Member

    does any body know, or know where I can get the specs on my Hamilton 733? What is the procedure to check those specs?
  2. CDK
    Joined: Aug 2007
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    CDK retired engineer

    The NZ jet forum is probably a better place to ask such questions.
  3. speedboats
    Joined: Jun 2006
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    speedboats Senior Member

    733 or 773?

    Either way, impellor OD to wear ring ID shouldn't be larger than 60thou (30 thou radius / gap between). They can be rebuilt easily enough. You should notice considerable slippage as you mash the gas which'll settle a little as you gain speed (slight over-rev, then the revs drop back a little, probably still a little above normal)

  4. tom kane
    Joined: Nov 2003
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    Location: Hamilton.New Zealand.

    tom kane Senior Member

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